Name the plant part:

(a) which bends in the direction of gravity but away from light

(b) which bends towards light but away from the force of gravity

Give one example each of a plant part:

(a) which is positively hydrotropic as well as positively geotropic.

(b) which is positively phototropic but negatively geotropic.

Which of the following is a growth movement and which is not?

(a) folding up of leaves of sensitive plant on touching with hand.

(b) folding up of petals of dandelion flower when light fades.

To which directional stimuli do:

(a) roots respond?

(b) shoots respond?

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 ………………

(j) 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...............