Question

Ans of 17 q its urgent plsss

Answer 1

(a). following are the three types of directional movements in pants.

1) phototropism

this movement accures in response of light.it causes differential growth of stem and roots.

2) geotropism.

this movement accures due to response of gravity . it may be positive geotropism( i,e roots) or negative geotropism( i,e shoots).

3) Hydrotropism.

this movement accures in response of water i,e growth of roots towards water.

(B)..

brain is protected by skull while spinal cord is protected by vertebral column in humans.

(C)..

pituitary gland is called master gland present in human.

Hy My dear I hope it helps You. Take care bye.

Answer 2

Answer:

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