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

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In this article we are going to read-

1. Synthesis of nutrients other carbohydrates in plants.

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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.  

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Upcoming parts-

 

 Part 4- Cells

Part 5- 1.3- Other modes of nutrition in Plants