What are invertebrates? Animal World part 13

 In some of the previous articles (which contained of part 8 and part 9 ) we read about invertebrates, but there wasn't a lot of information regarding to them. But now in this article and next articles, you are going to red about invertebrates in deep. So let's start.

Now if you have ever seen a human skeleton, then you know that it contains backbone, and we humans and other vertebrates (animals with backbone) can't survive long without our backbone. We are able to walk because of backbone. But there are animals which don't have backbone. These are called invertebrates. Of millions of species in this Earth around 97% of them are invertebrates. Common examples of invertebrates are insects, spiders, snails, clams worms and molluscs. 

But body structure of animals in the all Earth is not same. Even though a bear and caterpillar are animals but their body structures are very different.

In animal kingdom, invertebrates are actually the largest group. The total number of invertebrate species are around 30 million. But vertebrates are only around 60,000 to 70,000. Invertebrates include animals both on land and in water. 

Invertebrates have a long history, fossil records show invertebrates existed even 600 million years ago, which is even before dinosaurs. Invertebrates are also the major food source of animals like birds and fishes, you may have seen fishes and birds eating worms and insects. Invertebrates play a major role in life of vertebrates.

Many of the invertebrates work like pests and parasites such as grasshoppers and ladybug.

So lets summarize this article-

1. Invertebrates are animals without any backbone.

2. There is a lot of difference between body structure of vertebrates and invertebrates.

3. Most animal life on the planet is invertebrates, they have 30 million species in them.

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Do Animal Classification change? Animal Word part 12

 We have made articles on binomial system of classifying animals and people who were first to classify animals in their own way if you haven't read those then visit our page to see them or just click here for reading people who classified animals and click here for knowing what is binomial system of classifying animals. But another question arises that does the classifications in which a species is put changes? Now if you don't know about that then read this article till the end to know does this all changes, so lets begin.

When classifying animals was at initial stage the man was totally depended on his senses, that's why classifying animals was observation and our observation had limited scope because of our senses. Our senses may device us too. But in this modern era, we have well sophisticated classifying system and better equipment we can classify animals with ease and with more accuracy.

Animal classification (taxonomy is branch of science dealing with it) now uses sophisticated scientific methods to identify relationships between species. 
But id you have read our previous article of people who classified animals, then you know that the method of classifying animals also changes. This means there is a probability that the group in which a species is kept can change. Occasionally, new species are identified.

Now if you didn't understand first read the article in which we talked about peopled who classified animals, and then we also have an example for you.

Until a recent DNA studies were conducted on elephants, it was thought that there were only two species of elephants which are Asian Elephant and African Elephant. But in an recent research of 2010, it was revealed that African Elephants are actually of types. African Bush Elephants and African Forest Elephants. This way there are now three species of elephants.   

So, to conclude lets summarize-

1. At initial stage of taxonomy, man was totally depended on it's senses, but now we use sophisticated scientific system of classifying animals.

2. Ways of classifying animals changed with time, which resulted in changing of groups in which species were placed, this also sometimes result in identifying new species of animals.

3. The classification of an animal can change according to change in system.

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‘Why did organisms need to move from one ocean to land?’ Animal World part 6

Hello friends in this article you are going to read about why organisms had to move from oceans to land, so if you are new to this blog I will recommend you to read our Animal World series.

 

So let’s go to the point when the life just occurred on our planet, the oceans provided the most conductive natural conditions for the occurrence of life. The dry land provided further opportunity for growth and development of life. In the process of evolution the movement of animals from water to land was a great milestone in this journey of life.

In the earliest stage of life single-celled organisms lived in water and then developed to multi-cellular organisms and became complex and complex. The first forms of life were plants like algae, mosses and lichens; these only provided the food which was required for animals in the water.

In some millions of years new forms of plant life developed. These plants had new feature like roots, stems and leaves, which made them organisms which could survive on land and mostly in wet, swampy areas on land.

When the food was there on land too, the animals gradually evolved in order to survive on land. The availability of food was the most important factor in movement of animals on land. The first animals to roam on land probably were worms and some other soft-bodied invertebrates. They were probably followed by some fishes that also evolved over thousands of years and developed limbs to walk and lungs to breathe and they were followed by reptiles that could live both in land and water, and as you know they are called amphibians.

 

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‘What is the theory of evolution?’ Animal World part 7

 Hello friends we are back with our Animal World series and this article you are going to read about the ‘Theory of Evolution’ in a short and simple manner.

 

Charles Darwin, an English naturalist, made a solution to the evolution of life on Earth by their theory of evolution, as there were many myths that how life emerged and it was different in each religion.

So, the Theory was made in 1859, according to Charles Darwin, the living things we have seen today have been evolving from a very long duration of time, and this took millions of years for the evolution of life. This theory says that different species may show many similarities because they have evolved from the common ancestor. Charles Darwin explained that different species evolved by a process called natural selection. The characteristics of each individual are determined by extremely small pieces of genetic material called genes. Genes are present in nuclei of body’s cells. Sometimes certain change in the genes take place, these are called mutations. These mutations cause formation of new characteristics in individuals. Some mutations are even harmful and make the survival of babies difficult. The animals with this harmful mutation may not be able to compete with other animals for food and space to live.

While there are some mutations which make animals more fit and able to survived in new conditions. These animals gradually increase in number. In this way, nature selects these animals and individuals who are the best to survive in this changing environment. This is called the natural selection.

Giraffe is an excellent example of natural selection, animals that had longer necks were able to reach up higher and get more food. The animals like giraffe survived and other with short necks couldn’t compete with them and therefore died.

 

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'Miller's experiment and study of evolution' Animal World part 5

 Hello friends, this is another part of our Animal World series, it took so delay because the views were not coming, so please share this article, today's view target is 25 views.

So, we have seen time travel in several movies. But for now it is not possible for us to see the past of our Earth. Some scientists also tried to recreate the prehistoric past when life was non-existent and Earth was just cooling down for millions and billions of years. Stanley Miller, an American chemist, conducted many experiments in this regard and tried to prove how life came into existence. 

Miller conducted an experiment in 1953, which put light on sprouting the life on Earth. He filled a laboratory flask with a mixture of gases which were similar to the gases present in the Earth when it was a hot ball. He then fired electrical sparks through the gases through a week. The electrical gases had the same effect on the gases in the flask to that bolts on the Earth's atmosphere before the appearance of life.

After this experiment a lot of substances like amino acids and sugar were formed which are important for the life to grow. From this scientists concluded that the lighting bolts which were very common when the Earth was cooling reacted in this way that essential substances for life formed on this Earth and then the life occurred  and developed.

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November Current Affairs part 3 (New genus of treefrog)

 •A new genus of the old world treefrog family has been discovered in the Andaman Islands and Northeast India. 

•For the first time a tree frog species, Rohanixalus vittatus (Striped Bubble-nest frog), is reported from the Andaman Islands of India. 

• The new genus Rohanixalus is named after the Sri Lankan taxonomist Rohan Pethiyagoda. 

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September Current Affairs part 3

 Hello friends in this article we are going to continue our Current Affairs series.

1. A new species of gecko has been discovered in Kerala's Palakkad village, and scientists have named it Palakkad Dwarf Gecko or Cnemaspis Palakkadensis. "An average Palakkad Dwarf Gecko will be around 32.2 mm or 3.2 cm. It also has beautiful black and brown patches on its dorsal (upper) body and an orange shade on its chin or ventral part of its body," a scientist said. 

Important Points- i. Kerala Capital- Thiruvananthapuram

ii. Kerala Chief Minister- Pinarayi Vijayan

iii. Kerala Governor- Arif Mohammad Khan

Image Credit-https://www.thenewsminute.com/ 

Image of the Gecko

2. Researchers have said over 50% of global phosphorus loss in agriculture can be attributed to soil erosion. They combined high-resolution, spatially discrete global data on the phosphorus content of soils with local erosion rate. They also studied elevated phosphorus content in waters in several regions and said the increase mirrored the loss of phosphorus in the soil in those regions. 

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3. US-based rocket startup Astra's first orbital test launch failed during first-stage engine burn. The mission ended early because of unwanted back-and-forth wobbling in the rocket which caused an engine shutdown by the vehicle's automated safety system. However, Astra added the rocket "performed very well". The startup said it wasn't expecting to reach the orbit on this flight. 

Important Points-

i. Capital of United States- Washington D.C.

ii. Astra is a launch vehicle company situated in United States.

iii. Astra Headquarter- Alameda, California.

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September Current Affairs part 1

Hello friends in this article we are going to continue our current affair series.

1. Tamil Nadu Chief Minister K Palaniswami on Monday pledged to donate his eyes and launched a dedicated portal to help eye donors register for the same. Earlier on Sunday, Union Health Minister Dr Harsh Vardhan  donated his mother's eyes at AIIMS after her demise or death. 

Important points- i. Tamil Nadu Capital-  Thiruvananthapuram, 

ii. Tamil Nadu Governor- Thiru Banwarilal Purohit (2020)

 

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2. The National Education Policy 2020 will focus more on learning instead of studying, PM Narendra Modi said addressing the Governors Conference on the NEP on Monday. "The more teachers and parents are connected to NEP, the more students will be connected, the more its relevance and comprehensiveness increases," he added. President Ram Nath Kovind was also present at the virtual conference.

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3. India on Monday became the fourth country after the United States, Russia and China to develop and successfully test Hypersonic technology. The test was conducted at APJ Abdul Kalam testing range (Wheeler Island) in Balasore, Odisha. Defence Minister Rajnath Singh congratulated the DRDO after the test and praised their efforts to build a scramjet engine in India. 

Important points- i. Hypersonic means a speed that exceeds from the speed of sound.

ii. DRDO means Defense Research and Development Organisation. 

iii. Scramjets engines are engines which are specially designed for high speed jets and they are type of Ramjets.

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4. Rise of rival apps and a weakened valuation due to technology transfer curbs might prove to be hurdles for TikTok's India sale, reported Livemint. The absence of the core algorithm in the deal would attenuate the value and could be a deal breaker for acquisition talks mentioned the report. Japan's SoftBank has reportedly begun talks to bid for TikTok's India unit. 

Important Points- i. Tik Tok's CEO- Kevin Mayer

ii. SoftBank Japan CEO- Masayoshi Son

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5. Consultancy firm EY said that companies in India responded well to cyber-attacks after seeing total chaos in the first three months of the COVID-19 induced Iockdown. Senior EY official Arpinder Singh said the period saw several ransomware and cyber cases. He added that companies have invested to make sure their networks are safer but upgradation has to be done. 

Important Points- i. EY means- Ernst and Young

ii. HQ of EY- London United kingdoms

iii. CEO of EY- Carmine Di Sibio  

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6. India's largest public sector lender, State Bank of India has reportedly planned a Voluntary Retirement Scheme (VRS) under which about 30,190 employees are eligible. The proposed Second Innings Tap VRS-2020  be opened to 3” permanent officers and staff who have put in 25 years of service or completed 55 years of age on the cut-off date. 

Important Points- i. CEO of SBI- Ashwini Kumar Tewari

ii. HQ of SBI- Mumbai, Maharashtra

iii. Date of Establishment- 1 July 1955.

=====================

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Upcoming Blogs- 

1. Sandhi Part 5

2. Find the Missing number in the series.

EVS: Plants and Trees: Fill in the blanks with the correct words given below: 1

(lotus, trees, living, creeper, green, woody)

1. Plants are _________ things

2. Leaves of most plant are _________

3. _________ crawls on the ground.

4. Shrubs have hard and  _________ stem.

5. _________ is a water plants.

6. Big and strong plants are called _________

 =================================================

For moral stories, Lokkaths (stories in Indian culture), Lokgit (Lyrics of Indian songs) please visit

http://lokgitbhajanevamkahaniya.blogspot.com/ 

=====================================================

For recipes, poems and motivation visit- https://gyankadeep.blogspot.com/ =========================================================== For G.K. especially for Bharat/India visit- https://gkbookofbharat.blogspot.com/ =========================================================== For building vocabulary visit- https://funwithlanguages123.blogspot.com/ ========================================================== For law study notes visit- https://notesdynamo.blogspot.com/ =============================================================

Answers 1. living 2. green 3. creeper 4. woody 5. lotus 6. trees

EVS: Plants and Trees: Match the following with their names - 1

Hello friends in this blog we are going to continue our EVS Q and A series-

1. Shrubs                                          (a) mint

2. Water plants                                 (b) neem

3. Herbs                                           (c) grapevine

4. Climbers                                      (d) Rose

5. Creepers                                      (e) Lotus

6. Small leaves                                 (f) grass

=====================================

================================================= For moral stories, Lokkaths (stories in Indian culture), Lokgit (Lyrics of Indian songs) please visit http://lokgitbhajanevamkahaniya.blogspot.com/  ===================================================== For recipes, poems and motivation visit- https://gyankadeep.blogspot.com/ =========================================================== For G.K. especially for Bharat/India visit- https://gkbookofbharat.blogspot.com/ =========================================================== For building vocabulary visit- https://funwithlanguages123.blogspot.com/ ========================================================== For law study notes visit- https://notesdynamo.blogspot.com =============================================================

1. Shrubs            (d) Rose

2. Water plants   (e) Lotus

3. Herbs              (f) grass

4. Climbers         (c) grapevine

5. Creepers        (a) mint

6. Small leaves   (b) neem

EVS: Plants and Trees Put tick (√) against the correct sentences and cross(X) against the wrong ones - 1

Hello friends and today we are going to continue our EVS plants Q and A series.

1. Plants are non-living things.

2. Climbers do not need support to stand.

3. Money plant is a big plant.

4. Some Plants are big.

5. Neem tree is a creeper

6. Most leaves are green in color.

 =================================================

For moral stories, Lokkaths (stories in Indian culture), Lokgit (Lyrics of Indian songs) please visit

http://lokgitbhajanevamkahaniya.blogspot.com/ 

=====================================================

For recipes, poems and motivation visit- https://gyankadeep.blogspot.com/ =========================================================== For G.K. especially for Bharat/India visit- https://gkbookofbharat.blogspot.com/ =========================================================== For building vocabulary visit- https://funwithlanguages123.blogspot.com/ ========================================================== For law study notes visit- https://notesdynamo.blogspot.com/ =============================================================

Answers

1. X.

2. X

3. X.

4. √

5. X

6. √

EVS: Plants and Trees: Q&A

Answer the following question.

1. Are plants living things? 

Answer:- Plants are living things.

2. What do you mean by a tree?

Answer:- Big and strong plants are called trees.

3. What is the difference between shrubs and herbs? 

Answer:-

Shrubs                                                                Herbs

(i) They have small hard and woody stem.         (i) They have soft and green stem

(ii) They are medium in size                               (ii) They are smaller than shrubs

(iii) Examples:- Hibiscus and tulsi                      (iii) Examples:- Wheat and sunflower 

4. What are small plants?

Answer:- Small plants are smaller than trees.  They have thinner and weaker stems.

5. Name the color of most of the leaves.

Answer:- Leaves of most plants are green in color.

6. What is the difference between climbers and creepers?  

Answer:-

Climbers                                                            Creepers

(i) They need support to stand erect.                (i) They crawl along with the ground.

(ii) Example:- Money plant and pea                  (ii) Example:- Pumpkin and water-melon 

 =================================================

For moral stories, Lokkaths (stories in Indian culture), Lokgit (Lyrics of Indian songs) please visit

http://lokgitbhajanevamkahaniya.blogspot.com/ 

=====================================================

For recipes, poems and motivation visit- https://gyankadeep.blogspot.com/ =========================================================== For G.K. especially for Bharat/India visit- https://gkbookofbharat.blogspot.com/ =========================================================== For building vocabulary visit- https://funwithlanguages123.blogspot.com/ ========================================================== For law study notes visit- https://notesdynamo.blogspot.com/ =============================================================

August Current affairs part 3

 Hello friends, today we are going to continue the current affair series.

1. The Karnataka Secondary Education Examination Board (KSEED) on Monday declared the SSLC results. A total of 6 students scored 625/625 marks in exams. The state recorded a pass percentage of 71.80%, which is reportedly a drop of 1.9% in comparison with the pass percentage of 2019. Over 8 lakh students from the state appeared for exam.

2. The Delhi University has activated an online portal for insurance of digital degree certificates to students who graduated from the University up till last year but did not receive their degrees, the Delhi High Court was informed. The university said that the students have to register at www.digicerti.du.ac.in, after which the digital degree certificates will be issued within a week.

3. A study sugested that 50 minutes dry heat in an electric cooker can decontaminate N95 respirators inside and out while maintaining their filtration and fit. Researchers verified that one cooking cycle, which maintained the cooker's temperature around 100 degree Celsius. Decontaminated the mask. It helped in getting rid of 4 different classes of virus including Corona virus.

4. Researchers have discovered a a 'bizarre'reptile fossil, which had a neck three times long from its torso, which lived in water. First described in 1852, the 20 foot long and lived 242 million years ago. They also said that the 'Tanystropheus hydroides' shared coastal waters with another smaller but similar-looking Tanystropheus species.

5. NASA has gathered the first full global map of helium, in the solar atmosphere using the sounding rocket launched in 2009. Using the images of the solar corona, scientists figured equatorial regions had almost no helium while areas at mid latitudes had the most helium. They further said abundance at mid latitudes overlaps with where Sun's magnetic field lines open out in the solar system.

6. Kobe University researchers have discovered what they believe may be the largest impact crater in the solar system located on Jupiter's biggest moon named Ganymede, they found these concentrical rings are distributed across almost the entire moon surface. This global distribution indicates the rings may be the remains of crater covering Ganymede.

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August Current Affair part 1

Hello friends, in this article you are going to read some G.K. related facts.

1. PM Narendra Modi on Saturday said National Education Policy (NEP) 2020 focuses on building job creators instead of job seekers. "The 21st century is era of knowledge. This is the time for increased focus on learning, research and innovation. This is exactly what NEP 2020 does", PM Modi said. He was addressing the Smart India Hackathon in grand finale.

2. "The number of South African Rhinos killed by poachers halfed in the first 6 months of 2020, partly due to Coronavirus-induced lockdown", said the Environment, Forestry and Fisheries Minister Barbara Creecy. She said 166 rhinos were killed during this period, compared with the 316 in first half of 2019. However Creecy warned that poaching is slowly increased since the gradual lift in lockdown.

3. Chinese Foreign Ministry spokesman Wang Wenbin on Monday said that China will suspend its extradition agreement with New Zealand. China's move comes in response to New Zealand suspending it's existing extradition treaty with Hong Kong last month. New Zealand had suspended the treaty over China's introduction of new national security aw in Hong Kong.

4. Scientists claim to have found a Saturn-like planet orbiting a cool star, it's name is TVLM 513-46546, around 35 light-years away from Earth. It is found by using VLBA. The astronomers observed the star's wobble and the presence of a planet whose mass would be around Saturn's mass. The planet is orbiting the star once every 221 days. The planet is closer to the star, then mercury is to Sun.

5. Russian scientists have found a well-preserved 10,000 year old Woolly Mammoth fossils, which were formed by the local residents. 90% of the fossil has been recovered in two expeditions. The woolly mammoth is estimated to be 15-20 year old, a male which is 10 feet tall.

6. ByteDancer founder Zhang Yiming told staff in a letter that the US' idea was not to force a sale of Tik Tok's US operations but to ban it. reports said. He added ByteDance is exploring all possibilities to resolve the current issue with US.  Yming also said Byte dance has not reached a decision on options like Tik Tok's sale.

7. A day before the groundbreaking ceremony of Ram temple in UP's Ayodhya, former Union minister and BJP leader Vijay Goel demanded the 'Babar road' should be renamed as '5 August Marg'. ''Babar was a foreign invader who got the Ram temple demolished," said Goel on Twitter. he said he has placed his demand before government   

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Geography Class 7- Chapter 1 notes part-8

Hello friends in this blog you are going to read some very important notes in the chapter 1 of geography class 7.

1. In recent years damns and multi-purpose projects have came under a great opposition because of- the following reasons-

i. Regulating and damning of rivers affect their natural flow, which causes excess of sedimentation. This results in poor habitat for aquatic life.

ii. Damns also fragment or make parts of rivers which makes the migration of aquatic animals difficult.

iii. The reservoirs that are built on the existing vegetation and soil leading to it's decomposition over time. 

2. Travels which conserves environment and improve the well-being of the local people is called Eco-tourism. This is also called responsible tourism. It is called so, because it puts responsibility on tourists to conserve environment.

3. Tarun Bhagat Singh group is a group which is related to water management and conservation.

4. Biogeochemicals are the chemicals and elements like oxygen nitrogen, etc. But because of pollution by factories and vehicles these biogeochemicles are unbalanced.

5. Cultural environment- Man has evolved by the time and has made progress. We used natural components and made many changes in the environment. Human settlements, roads, farmlands, damns, and many other things are included in cultural environment.

6. Ecosystem is the interaction between animals and plants. The branch of science that studies ecosystem is called Ecology. The scientists which study ecology are called ecologists.

7. There are four type of people in the ecosystem.

1. Producer- The plants are the producers ad they don't consume anything from other animals. E.g.- Plants.

2. Primary consumers- Most of the primary consumers are herbivores and eat only plants. E.g.- Deer

3. Secondary consumers- The secondary consumers eat the small primary consumers. E.g.- Snake

4. Tertiary consumers-  These are the animals which eat the primary and the secondary consumers. E.g.- Orcas.

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Geography Class 7- Chapter 1 notes part-7

Hello friends in this blog you are going to read some very important notes in the chapter 1 of geography class 7.

1. When the humans were very undeveloped, at that time we would adapt to the environment. But now we are developing very quickly and we are changing our environment.

2. We are changing our environment by making more factories, vehicles, and appliances. In which some are very useful, but at the same time they also cause serious damage to the environment. E.g.- Plastic.

3. So, like plastic there are many things, note them in the comments below. But let's get to the topic, plastic is a non-biodegradable substance means it will take a long time to degrade. So it is harming our environment.

4. We are destroying our environment, but we can take some simple steps to save it too. Like to use the 3R which means- Reduce-Reuse-Recycle.

5. Reduce means we should reduce the use of resources, and try to save them. This means use only that much resources which are required. Reuse means to use the things which you can use repeatedly, like the bags and many other things, write down these things too. Recycling can be done by us, we can recycle out broken or waste things, like we can use damaged bottles to make pen stands and much more.

6. The gravitational force of Earth holds the atmosphere in the Earth.

7.World Environment day is celebrated on  5th June every year.

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NCERT Geography class 7 ch 1 notes (part 5)

Hello friend  in this blog you are going to read geography.

1. Atmosphere is the gaseous part of the Earth.

2. It is very important for our survival as it contains the precious gas oxygen, which is important for respiration.

3. The proportion for gases in atmosphere-  
1. Nitrogen- 78%
2. Oxygen- 21%
3. Other gases like carbon-dioxide, argon, etc- 1%.

4. There are 5 layers of atmosphere-
1. Troposphere
2. Stratosphere
3. Mesosphere 
4. Thermosphere 
5. Exosphere

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NCERT Geography class 7 ch 1 notes (part 4)

Hello friend in this blog you are going to read geography.

1. Hydrosphere is the water portion of the Earth.

2. Hydrosphere consists of all forms of water.

3. There are mainly three forms of water-
1. Ice- It is the solid form of water.
2. Water- It is the liquid form of water.
3. Water vapor- It is the gaseous form of water.

4. Seas, oceans, lakes, ponds, rivers, streams, glacier, ice, water vapor, underground water, etc are all examples of hydrosphere.

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NCERT Geography class 7 ch 1 notes (part 3)

Hello friend in this blog you are going to read geography.

1. Lithosphere is the solid part of Earth. It consists of rocks from Earth's crust and a thin layer of soil.

2. Earth's surface is mainly divided into two parts.

3. The large land-masses called continents and the ocean basins.

4. Lithos means stone in Greek.

5. Mountains, plateaus, plains, deserts are all examples of Lithosphere.


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NCERT Geography class 7 ch 1 notes (part 2)

Hello friend in this blog you are going to read geography.

1. The interactions between biotic and abiotic components form a ecosystem.

2. There are two basic types of ecosystem-
1. Terrestrial- The ecosystem which occurs on land.
2. Aquatic- The ecosystem that occurs in water.

3. There are four major domains of Earth.

4. These domain are-
1. Lithosphere 
2. Hydrosphere
3. Atmosphere
4. Biosphere


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