Q. 584.6( 9 Votes )

In each of the fo

Answer :

(i) The rate of photosynthesis decreases in cloudy days.

(ii) The rate of photosynthesis decreases in the area where there is no rainfall for a considerable time.

(iii) There is no effect of manure on rate of photosynthesis.

(iv) The rate of photosynthesis decreases when dust gathers on the leaves.

(v) The contraction and expansion movements of the oesophagus called peristaltic movements, push the food down inside the alimentary canal.

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When a persLakhmir Singh & Manjit Kaur- Biology