Cytokinin

Q. Which plant hormone stimulates internodal elongation in plants?

1. Auxin
2. ABA
3. Ethylene
4. Gibberellins

Q. How is coordination in plants?

Q.

Which plant hormones is present in greater concentration in areas of rapid cell division

Q.

Select the correct option pertaining to the plant growth hormone cytokinin.

1. Promotes wilting of leaves
2. Promotes cell division
3. Promotes growth of terminal buds
4. Prevents growth of roots

Q.

The internal factor of a plant is

1. Light

2. Growth regulator

3. Moisture

4. Oxygen

Q.

Gibberellins delay leaf aging.

1. True
2. False

Q.

Question 1
Which of the following is a plant hormone?

(a) Insulin
(b) Thyroxin
(c) Oestrogen
(d) Cytokinin

Q.

What does the survival factor do?

Q.

Name a plant hormone which promotes cell division.

Q. Plant stems bend toward a light source as a result of:

1. inability to synthesise chemical regulators.
   
2. increased amount of food synthesised by leaves.
3. necessity of light for transpiration.
4. unequal auxin distribution in their stems.

Q. Cytokinins promote cell division in plants.

1. True
2. False

Q. Which is the hormone responsible for apical dominant growth?

1. Auxins
2. Gibberellins
3. Abscissic acid
4. Kinetin

Q. Match the following hormones with their correct function.

Q. Cytokinins promote cell division in plants.

1. True
2. False

Q.

Which plant hormone promotes cell division and cell differentiation along with auxin?

1. Cytokinins

2. Insulin

3. Gibberellins

4. Auxin

Q.

explain role of any 3 growth regulators and one growth inhibitor in plants life

Q. A mutant organism that will not grow on a minimal medium but does so on addition of some growth factors is known as

1. Autotroph
2. Axoneme
3. Auxotroph
4. Heterotroph

Q.

P is present in developing fruits and seeds and it promotes cell division. Y is responsible for wilting of leaves as it inhibits growth.
Identify P and Y.

1. P - Gibberellin, Y - Cytokinin

2. P - Auxin, Y - Gibberellin

3. P - Abscisic acid, Y - Cytokinin

4. P - Cytokinin, Y - Abscisic acid

Q. Cytokinins are known to:

1. Help in retention of chlorophyll
2. Promote formation of abscission layer
3. Inhibit cytoplasmic movement
4. Influence water transport

Q.

Which plant hormone promotes cell division and cell differentiation along with auxin?

1. Gibberellin

2. Abscisic acid

3. Ethylene

4. Cytokinin

Q.

Which plant hormone promotes cell division and cell differentiation along with auxin?

1. Gibberellin

2. Abscisic acid

3. Cytokinin

4. Ethylene

Q. Cytokinins are known to:

1. Help in retention of chlorophyll
2. Inhibit cytoplasmic movement
3. Promote formation of abscission layer
4. Influence water transport