Question

Explain 15the question pls

Answer 1

a) Animals use chemical means of

communication because the

working or thinking ability of their

brain is not fast enough.

That is they have slow

working central nervous system

and hence they need some efficient

means to communicate.

b) Cytokinin helps in cell division and

growth, therefore they need to

remain present in greater

concentrationn in parts of the plant

that need to grow and develop i.e.

seeds and fruits.

'Be faithful'

Thanxxx.