Chapter 32 - Plant Responses

Question 1

Stimulus

Answer 1

anything that causes a reaction in an organism or in any of its parts

Question 2

Response

Answer 2

the activity of a cell or organism as a result of a stimulus

Question 3

Tropism

Answer 3

a change in the growth of a plant in response to an external stimulus

Question 4

Positive Tropism

Answer 4

growth is towards stimuli

Question 5

Negative tropism

Answer 5

growth is away from stimuli

Question 6

Phototropism

Answer 6

the change in growth of a plant in response to light

Question 7

Geotropism

Answer 7

the change in growth of a plant in response to gravity

Question 8

Thigmotropism

Answer 8

the change in growth of a plant in response to touch

Question 9

Hydrotropism

Answer 9

the change in growth of a plant in response to water

Question 10

Chemotropism

Answer 10

the change in growth of a plant in response to chemicals

Question 11

Growth regulator

Answer 11

chemical that controls the growth of a plant

Question 12

Growth promotor

Answer 12

a chemical that causes an increase in growth in plants

Question 13

Growth inhibitor

Answer 13

chemical that causes a reduction in growth in plants