Question

Fill in the following blanks :
(a) A plant's response to light is called ..........
(b) A plant's response to gravity is called ........
(c) Plant shoot grows upward in response to ........
(d) Plant roots grow downward in response to ........
(e) Tendrils wind around a support in response to .......
(f) Plant roots grow towards........ and in the direction of force of .........
(g) A root of a plant grows downward. This is known as ........
(h) ...... is the hormone that causes phototropism in plants
(i) The response of leaves to the sunlight is called ..........

Answer 1

(a) A plant's response to light is called phototropism.
(b) A plant's response to gravity is called geotropism.
(c) Plant shoot grows upward in response to light.
(d) Plant roots grow downward in response to gravity.
(e) Tendrils wind around a support in response to touch.
(f) Plant roots grow downwards and in the direction of the force of gravity.
(g) The root of a plant grows downward. This is known as geotropism.
(h) Auxin is the hormone that causes phototropism in plants.
(i) The response of leaves to sunlight is called phototropism.