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

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

Question 4

Positive tropism

Answer 4

Growth towards the stimulus

Question 5

Negative tropism

Answer 5

Growth away from the stimulus

Question 6

Phototropism

Answer 6

Change of growth in a plant in response to light

Question 7

Geotropism

Answer 7

Change in growth of a plant in response to gravity

Question 8

Thigmotropism

Answer 8

Change in growth of a plant in response to touch

Question 9

Hydrotropism

Answer 9

Change in growth of a plant in réponse to water

Question 10

Chemotropism

Answer 10

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 promoter

Answer 12

Chemical that causes increased growth in plants

Question 13

Growth inhibitors

Answer 13

Chemicals that cause the reduction in growth of plants