NCERT Science Notes for Class 7 (Part 5) 1.3

Hello friends in this blog you are going to read about some other modes of nutrition in plants.

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In the previous part you read-

1. What is a cell?

2. What is the structure of a cell?

Link for the previous blog-

https://allinoneguidematerial.blogspot.com/2020/10/ncert-

science-notes-for-class-7-part-4.html

==========

In this blog we are going to read about-

1. Parasitic Nutrition

2.  Insectivorous plants

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1. Some plants do not have chlorophyll, so they cannot synthesize their own food. They use heterotrophic nutrition to fulfill their demand of food.

 

2. Parasites are organisms which use a heterotrophic mode of nutrition and collect food from their host; sometimes parasites are harmful for the host too.

 

3. Mosquito is also a parasite, but you will read about it later. In this chapter we will read about a parasite which feeds on the plants.

 

4. Amarbel or Cuscuta does not have chlorophyll; it takes readymade food from the plant it is climbing.

 

5. Plants which feed on insects are called insectivorous plants. It has a pitcher/jug like part which is a modified leaf.

 

6. The leaf forms a lid which opens and closes as per the requirement. Inside the mouth of the pitcher there are hairs which are directing downwards.

 

7. When an insect land the lid closes and the insect get trapped in the hair and get digested through digestive juices secreted by the plant.

 

Thanks for reading share this blog for more informative articles.

The Three Fools

 THE THREE FOOLS

One day Akbar told Birbal to seek out and bring before him the three greatest fools in the Empire. A month later Birbal came to the court with a man.

Who is this asked Akbar?

A fool said Birbal. One day I was wandering to find fools and I came across this man. he was riding a donkey but was carrying load on his shoulders because he felt he should not overload the animal.

I see said Akbar. That is only one where are the other 2?

The second fool is myself said Birbal. Only a fool would have accepted an assignment to look for fools.

And the third?

“He is the one who sent me on this foolish quest.” Said Birbal.

NCERT Science Notes for Class 7 (Part 4) Cell

Hello friends in this blog you are going to read about cells.  The next blogs for 1.3, 1.4 and 1.5 will be uploaded on 17^th October.

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

In the previous article we learned about-

1. Synthesis of nutrients other carbohydrates in plants.

Link for the previous part-

https://allinoneguidematerial.blogspot.com/2020/10/ncert-

science-notes-for-class-7-part-3.html

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

In this article we are going to read about-

1. What are cells?

2. What is the structure of cells?

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

 

1. Like buildings are made with bricks, our body is also made up of cells; we can say that they are building blocks of our body.

 

2. Some organisms are made up of only one cell; they are called single celled organisms. You can read our ‘Animal World’ series to know more about these.

 

3. But some organisms are complex and have a lot of cells in them, so let us know more about cell and let’s know its structure.

 

4. So let’s start with the cell membrane; each cell is enclosed with a thin boundary which is called cell membrane.

 

5. Then we have the nucleus. In each cell there is a distinct, centrally located spherical shape nucleus. The nucleus is surrounded with a jelly-like substance called cytoplasm.  

 

Thanks for reading share this blog for more such informative articles.

NCERT Science Notes for Class 7 (Part 3) 1.2- Photosynthesis- Food Making process in Plants

 

Hello friends in this part we will continue the science 1.2.

In the previous we had read-

1. Functions and roles of different parts of plant in photosynthesis.

2. A detailed explanation of photosynthesis.

Link of the previous part-

https://allinoneguidematerial.blogspot.com/2020/10/ncert-science-notes-for-class-7-part-2.html

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

In this article we are going to read-

1. Synthesis of nutrients other carbohydrates in plants.

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

 

1. You may have seen leaves of colors other than green, they also contain chlorophyll. There is just a masking of red, brown or other color pigments which mask the green color.

 

2. Algae are also an autotroph they also contain chlorophyll, and it also make food through photosynthesis.

 

3. Carbohydratesas its name are made with carbon, hydrogen and oxygen; these are also used to synthesize proteins, vitamins and fats.

 

4. But proteinsare nitrogenous substances which contain nitrogen. As we know there is almost 78% nitrogen, but plants cannot use this atmospheric nitrogen.

 

5. So, there is a special kind of bacteria which converts this atmospheric nitrogen to a usable form for plants and plants absorb this with water and minerals.

 

6. Farmers also spray some special type of fertilizer which contains nitrogen, to make soil rich in nitrogen.  

Thanks for reading share this article, share this blog with your friends and family. 

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Upcoming parts-

 

 Part 4- Cells

Part 5- 1.3- Other modes of nutrition in Plants

NCERT Science Notes for Class 7 (Part 2) 1.2- Photosynthesis- Food making process in Plants

Hello friends in this blog you are going to read about photosynthesis.

 

In the previous part you had read about-

1. What is nutrition?

2. Autotrophs and Heterotrophs

 Link for previous part-

https://allinoneguidematerial.blogspot.com/2020/10/ncert-science-notes-for-class-7-part-1.html

==========

In this article we are going to read about-

1. Functions and roles of different parts of plant in photosynthesis.

2. A detailed explanation of photosynthesis.

==========

 

1. As we know plants make their food by photosynthesis (photo=light and synthesis=to combine) and use some simple substances like Carbon-dioxide (CO₂), water (H₂O) and many mineralswhich are present in soil.

 

2. The roots absorb the water and minerals from soil and they are transported to leaves through stem.

 

3. The stem transports minerals and nutrients from the roots to the leaves by small pipes called vessels, in dessert plants photosynthesis is done by the stem.

 

4. The leaves have small pores in them; these are called stomata and are surrounded by guard cells. They take carbon-dioxide from air.

 

5. The cells of a leaf have a green pigment present in them, this green pigment is called chlorophyll, and it helps the leaves to capture Sun’s energy to make the food.

 

6. The word equation for photosynthesis is-

Carbon dioxide + Oxygen        _chlorophyll ^sunlight

= Carbohydrate + Oxygen.

 

7. If a plant’s leaves contain starch it indicates the occurrence of photosynthesis. Starch is also a type of carbohydrate.

 

Thanks for reading share this blog for more such informative articles.

========

Upcoming parts- 

Part 3- 1.2- Photosynthesis- Food Making Process in Plants  (Part 2)

Part 4- Cells

 

 

 

 

 

NCERT Science Notes for Class 7 (Part 1) 1.1- Mode of Nutrition in plants

 Hello friends, so today we are going to start Chapter one of science Class 7. 

 

Today we are going to cover important points of 1.1- Mode of Nutrition in Plants  and there will be some additional information too.

 

1. Plants are the only organisms which can make their own food by using simple substances like water (H₂O) and carbon-dioxide (CO₂).

 

2. Nutrition is mode of taking food by an organism and utilizing nutrients from food by body.

 

3. Some organisms make their own food, and these organisms are called Autotrophs (Auto=self and trophos=nutrition). They are also called the producers in the food chain.

 

4. Plants are Autotrophs and make their own food by photosynthesis. Animals and most of the other animals indirectly or directly depend on plants for food. These organisms are called Heterotrophs (hetero=other and trophos=nutrition)

 

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Next parts- Part 2- 1.2- Photosynthesis- Food Making Process in Plants  (Part 1)

Part 3- 1.2- Photosynthesis- Food Making Process in Plants  (Part 2)

भगवान की प्लानिंग

एक बार भगवान से उनका सेवक कहता है,

भगवान-आप एक जगह खड़े-खड़े थक गये होंगे,

.

एक दिन के लिए मैं आपकी जगह मूर्ति बन कर खड़ा हो जाता हूं, आप मेरा रूप धारण कर घूम

आओ l

.

भगवान मान जाते हैं, लेकिन शर्त रखते हैं कि

जो भी लोग प्रार्थना करने आयें, तुम बस उनकी

प्रार्थना सुन लेना कुछ बोलना नहीं,

.

मैंने उन सभी के लिए प्लानिंग कर रखी है, सेवक

मान जाता है l

.

सबसे पहले मंदिर में बिजनेस मैन आता है और

कहता है, भगवान मैंने एक नयी फैक्ट्री डाली है,

उसे खूब सफल करना l

.

वह माथा टेकता है, तो उसका पर्स नीचे गिर

जाता है l वह बिना पर्स लिये ही चला जाता है l

.

सेवक बेचैन हो जाता है. वह सोचता है कि रोक

कर उसे बताये कि पर्स गिर गया, लेकिन शर्त

की वजह से वह नहीं कह पाता l

.

इसके बाद एक गरीब आदमी आता है और

भगवान को कहता है कि घर में खाने को कुछ नहीं. भगवान मदद करो l

.

तभी उसकी नजर पर्स पर पड़ती है. वह

भगवान का शुक्रिया अदा करता है और पर्स लेकर चला जाता है l

.

अब तीसरा व्यक्ति आता है, वह नाविक होता

है l

.

वह भगवान से कहता है कि मैं 15 दिनों के

लिए जहाज लेकर समुद्र की यात्रा पर जा रहा हूं,

यात्रा में कोई अड़चन न आये भगवान..

.

तभी पीछे से बिजनेस मैन पुलिस के साथ आता है और कहता है कि मेरे बाद ये नाविक आया

है l

.

इसी ने मेरा पर्स चुरा लिया है,पुलिस नाविक

को ले जा रही होती है तभी सेवक बोल पड़ता

है l

.

अब पुलिस सेवक के कहने पर उस गरीब आदमी

को पकड़ कर जेल में बंद कर देती है.

.

रात को भगवान आते हैं, तो सेवक खुशी खुशी

पूरा किस्सा बताता है l

.

भगवान कहते हैं, तुमने किसी का काम बनाया

नहीं, बल्कि बिगाड़ा है l

.

वह व्यापारी गलत धंधे करता है,अगर उसका

पर्स गिर भी गया, तो उसे फर्क नहीं पड़ता था l

.

इससे उसके पाप ही कम होते, क्योंकि वह

पर्स गरीब इंसान को मिला था. पर्स मिलने पर

उसके बच्चे भूखों नहीं मरते.

.

रही बात नाविक की, तो वह जिस यात्रा पर जा रहा था, वहां तूफान आनेवाला था,

.

अगर वह जेल में रहता, तो जान बच जाती.

उसकी पत्नी विधवा होने से बच जाती. तुमने

सब गड़बड़ कर दी l

.

कई बार हमारी लाइफ में भी ऐसी परेशानी आती है, जब हमें लगता है कि ये मेरे साथ ही क्यों हुआ l

.

लेकिन इसके पीछे भगवान की प्लानिंग होती है l

.

जब भी कोई परेशानी आये. उदास मत होना l

.

इस कहानी को याद करना और सोचना कि जो भी होता है,अच्छे के लिए होता है l

सदैव प्रसन्न रहिये!!

जो प्राप्त है-पर्याप्त है!!