Question

Answer this question​

Answer 1

Answer:

1) All organisms need to take food to get energy for the growth, development, locomotion and maintenance of their bodies.

2) Pta nhi

3) The presence of starch in leaves can be tested by Iodine test. When we remove chlorophyll from leaf by boiling it in alcohol and then put 2 drops of iodine solution, its colour change to blue indicates the presence of starch

4) The green plants have chlorophyll in the leaves. The leaves use C02 and water to make food in presence of sunlight.

5) Sketch join nhi ho rha hai

because 2 ka ans hai pic me

5 ka baad me btati hun

I hope you are satisfied with my ans

thanks

Class 7 ka ch nutrition in plants

right??

Answer 2

Answer:

Q1 - Why do organism need to take food?

Answer - Organism need to take food to get enery and perform life processes.

Q2 - Distinguish between a parasite and a saprotroph. ?

Answer - answer is on image ok

Q3 - How would you test the presence of starch in leaves?

Answer - The presence of starch in leaves can be tested by the Iodine test. When we remove chlorophyll from the leaf by boiling it in alcohol and then put two drops of iodine solution, it is colour change to blue indicates the presence of starch.

Q4 - Give a brief description of the process of synthesis of food in green plant?

Answer - We all know that plants are the primary source of food for all the life forms o the earth. Plants make food by themselves and we all are dependent on plants for food. The process of preparation of food in plants is called as photosynthesis. Let us dive deep into this process.

Q5 - show with the help of sketch that the plants are the ultimate source of food?

Answer - the answer is on image ok