Introduction; 1. What are some basic characteristics of hormones? Name the five

Question

Introduction;

1. What are some basic characteristics of hormones? Name the five traditional groups of plant hormones, and give three additional examples of chemical regulators that do not fit into these groups.

2.Auxins

What is meant by “polar transport”? Describe the mechanism of the polar transport of auxin in plants (both shoot and root)

3.Cytokinins;

Give examples to show how the cytokinin/auxin ratio regulates the differentiation of cells.

4.Ethylene

Describe the effects of applied ethylene on (a) fruit ripening, (b) abscission, and (c) seedling development in the dark.

5.Abscisic Acid

List some of the effects of ABA. Use these examples to show that ABA can be classed as an inhibitor in some respects and a promoter in others.

10.Gibberellins

Discuss the role of GA in stem growth using results obtained with GA-deficient mutants.

11.Gibberellins

Describe the mechanism by which gibberellins stimulate the germination of barley seeds.

12.The Molecular Basis of Hormone Action

Using barley aleurone tissues as an example, explain how hormones are able to switch genes on and off.

13.The Molecular Basis of Hormone Action

Discuss the ways in which plant hormones affect the shape of cells.

14.The Molecular Basis of Hormone Action

Explain how receptor proteins are involved in the mechanism of action of hormones. Give examples.

15.The Molecular Basis of Hormone Action;

Discuss the mechanism by which ABA regulates the opening of stomata.

Explanation / Answer

We cannot answer more than one question per post according to chegg rules.

1. Basic characteristics:

five traditional groups of plant hormones are:

Other three are:

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