Hormones

Promotes seed dormancy

• abscisic acid

• auxin

• cytokinins

• gibberellin

• ethylene

Stimulates cell division and

lateral (<---->) growth

• abscisic acid

• auxin

• cytokinins

• gibberellin

• ethylene

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

Which plant hormone is a gas?

• auxin

• gibberellin

• ethylene

• cytokinin

This hormone may oppose the effects of auxins. This is why you trim the tops off of stems (where auxin is produced) to have more lateral growth.

• abscisic acid

• auxin

• cytokinins

• gibberellin

• ethylene

My tomato seed wont grow. Which hormones can I use to make it start growing?

• Auxins

• Cytokinins

• Ethylene

• Abscisic acid

• Gibberellins

The figure below above shows an experiment to study the effect of auxin towards the growth of the coleoptiles. Which of the following conclusions are true about the experiment?

• I, II and III only.

• I, III and IV only.

• II, III and IV only.

• I, II, III and IV.

Tags

NGSS.HS-LS2-3

Apical dominance which suppresses lateral bud development is caused by what hormone?

• auxin

• gibberellin

• ethylene

• imbibition

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.

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.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS1-6