Give scientific reasons for the following statements:
Unlike animals, the plants do not show immediate response.

Explanation

All organisms show response to stimuli. However, the animals possess nervous system and sense organs, which are absent in plants. Animals use the nervous system as well as endocrine system for control and coordination of all their activities, while the plants possess only hormones to coordinate their activities. The hormones diffuse from cell to cell quite slowly in plants while most animals have blood for rapid transport of hormones. Because of all these reasons, the plants do not show immediate response.