CAX IGCSE Biol Plant Hormones

Auxins are responsible for _____________ of a plant

• Colour change

• Watering

• Phototropism

• Growth

Tags

NGSS.MS-LS1-5

What happens when you place an over ripe banana in a fruit bowl with other fruit?

• Nothing will happen

• The other fruit will grow in size

• Ethylene gas will cause the fruit to grow mold

• Ethylene gas will cause the other fruit to ripen

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Phototropism is

• The plant response to water

• The plant response to light

• The plant response to gravity

• The plant response to soil

Tags

NGSS.MS-LS1-5

Geotropism is

• The plant response to light

• The plant response to water

• The plant response to soil

• The plant response to gravity

The red arrow in the picture above is pointing to the ____________ system of the plant

• Shoot

• Root

• Tip

• Stem

Where is auxin formed

• Tip of stem and root

• Leaves

• Embryo

• All

Stimulates new root growth

• abscisic acid

• auxin

• cytokinins

• gibberellin

• ethylene

what type of tropism is occurring here?

• phototropism

• thigmotropism

• geotropism

• tropictropism

Tags

NGSS.MS-LS1-5

What is the phenomenon that is affecting the growth of the bean shoot

• gravitrophism

• phototropism

• thigmotrophism

• rapid movement

Tags

NGSS.MS-LS1-5

What is the role of auxin that causes a plant to bend towards light?

• The concentration of auxin in the plant increases when there is light.

• Auxin causes uniform growth on every stem.

• Auxin causes cells that are on the dark side to grow faster.

• Auxin causes the increase in the number of plant cells.

Tags

NGSS.MS-LS1-5