Q19 of 231 Page 93

What does a root do in response to gravity? What is this phenomenon known as?

Positive geotropism is the process in which the roots of plants bend downwards in the direction of gravity.


More from this chapter

All 231 →
17

Plant parts show two types of movements, one dependent on growth and the other independent of growth.

Give one example of the movement in plant parts:


(a) which depends on growth


(b) which does not depend on growth

 18

What is a plant hormone? Name four plant hormones. State one function of each.

 19

What does a stem (or shoot) do in response to light? What is this phenomenon known as?

 20

What does a stem (or shoot) do in response to gravity? What is this phenomenon known as?