AGR122 CHAPTER 7

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

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

The root of a plant growing down.

• Positive Gravitropism

• Negative Gravitropism

• Negative Thigmotropism

• Positive phototropism

Which of the following are plant hormones

• Auxin

• Cytokinin and Ethylene

• Gibberellin

• Abscisic acid

• All

Which plant hormone is a gas?

• auxin

• gibberellin

• ethylene

• cytokinin

The figure above shows a mimosa plant. What is the conclusion that can be derived based on the reaction in the figure.

• The mimosa plant shows a seismonastic reaction.

• The leaf of the mimosa becomes sturgid when touched.

• The osmotic pressure in the mimosa cell increases when touched.

• The temperature of the glass rod becomes very high until the leaf fades when touched.

The figure above shows an experiment

that is done on two plants of the same species. Both plants are left in the open.

What will happen to the two plants after two weeks?

I Plant B bends towards the opening of

the box.

II The auxin in stem A is distributed

uniformly.

III The auxin in stem B is not distributed

uniformly.

IV Plant A bends to the right.

• I, II and III only.

• I, II and IV only.

• I, III and IV only.

• II, III and IV only.

When creating seedless fruit, what type of flowers are sprayed with ethylene gas?

• pollinated

• unpollinated

• older

• small

Stimulates cell division

• abscisic acid

• auxin

• cytokinins

• gibberellin

• ethylene

Tags

NGSS.HS-LS1-4

Which hormone promotes seed germination?

• abscisic acid
• ethylene
• gibberellin
• auxin