B1.2.3 - Control in Plants

Question 1

Where do plants’ SHOOTS grow?

Answer 1

SHOOTS grow TOWARDS light AGAINST gravity force

Question 2

Where do plants’ ROOTS grow?

Answer 2

ROOTS grow TOWARDS moisture and in the direction of gravity

Question 3

What do plants produce to coordinate and control growth?

Answer 3

Hormones

Question 4

What is the main hormone that controls geotropism and phototropism?

Answer 4

Auxin

Question 5

What is geotropism?

Answer 5

The growth of plants in response to the force of gravity

Question 6

What is phototropism?

Answer 6

The growth of plants in response to light

Question 7

What does auxin cause?

Answer 7

Parts of a plant stem grows faster than others

Question 8

what does auxin result in?

Answer 8

the stem bends towards the light

Question 9

Where is there more auxin on the stem, and why?

Answer 9

There is more auxin on the shaded side, so the growth speeds up, making the stem bend towards light to carry out better photosynthesis.

Question 10

Plants are sensitive to what 3 things?

Answer 10

Light
Moisture
Gravity