Chemical Coordination In Plants

Question 1

Whats tropism?

Answer 1

The growth response of a plant to a directional stimulus.
If the growth response is towards the direction of the stimulus, then it’s a positive tropism.
If the growth response is away from the direction of the stimulus, then it’s a negative tropism.

Question 2

Whats phototropism?

Answer 2

The growth response of an organism in response to light stimulus.
Shoots are positive phototropism.
Roots are negative phototropism.

Question 3

Whats geotropism?

Answer 3

The growth response of a plant in response to gravity pulling on it.
Shoots are negative geotropism.
Roots are positive geotropism.

Question 4

Whats a coleoptiles?

Answer 4

This is a protective sheath that covers the first leaves of a cereal seeding. It protects the delicate leaves as the shoot emerges through the soil.

Question 5

Whats auxin?

Answer 5

A plant hormone that plays a role in coordination and behaviour?