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 knows as.........
(h) ......is the hormone that causes phototropism in plants
(i) The response of leaves to the sunlight is called ...............

Answer

(a) phototropism (b) geotropism (c) sunlight (d) gravity (e) touch (f) water; gravity (g) positive geotropism (h) Auxin (i) phototropism