Plant Hormones

Auxins are responsible for _____________ of a plant

• Colour change

• Watering

• Phototropism

• Growth

Tags

NGSS.MS-LS1-5

Examples of dwarf plants where gibberellins cause rapid growth are

• Grapes, Cabbage, Corn

• Deciduous trees

• Bananas, Avocado

• Watermelon, Rockmelon, Honeydew melon

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

In the story 'Jack and the beanstalk', Jack grew a beanstalk that grew way into the clouds. If I wanted to try and grow one myself, which plant hormone would I give my beanstalk?

• Cytokinesis

• Ethylene

• Auxins

• Gibberellins

Tags

NGSS.MS-LS1-5

If auxins are released down the stem of a plant, why doesn't the plant also grow on its side?

• Because there aren't as many auxins released down the stem of the plant compared to the amount that grow at the top

• Because there are vesicles along the walls on the sides of a plant which prevent growth

• Because the growing bud at the top of the plant produces auxins at the same time which means growth on the side of the plant stops

• Because toxic chemicals kill half of the active auxins in the bud which causes them to kill the others surrounding them. By the time the auxins start moving down the stem, they've already been killed off

Which plant hormone is a gas?

• auxin
• gibberellin
• ethylene
• cytokinin

Which hormone promotes seed germination?

• abscisic acid
• ethylene
• gibberellin
• auxin

Where is auxin formed

• Tip of stem and root

• Leaves

• Embryo

• All