Question

justify co2 is need of photosynthesis ​

Answer 1

Answer:

Yes, it will work satisfactorily. Lime water absorbs carbon dioxide and hence there is no carbon dioxide for the leaf and hence photosynthesis does not take place and no starch is prepared. Hence on iodine test, the presence of starch is negative and thus proves that carbon dioxide is required for photosynthesis.

Answer 2

Co2 is a need for photosynthesis as during this process the plants release oxygen and need carbon dioxide for making food