At the root apex the cells of the meristematic region are not characterized by:-

1. Being rich in protoplasm
2. Abundant plasmodesmatal connections
3. A cell wall that is primary in nature
4. Having small inconspicuous nuclei

The growth of a root elongating at a constant rate will be represented by:

1. A only

2. B only

3. Both A and B

4. Neither A nor B

Consider the following statements regarding growth in plants -
I. Cell enlargement requires water.
II. Oxygen helps in releasing metabolic energy for growth activities.
III. Nutrients are required for synthesis of protoplasm and act as source of energy.
Which of the above statements are true?
1. I and II only           2. I and III only
3. II and III only        4. I, II, and III

Growth can be measured in various ways. Which of these can be used as parameters to measure growth?

1. increase in cell number

2. increase in cell size

3. increase in length and weight

4. All of these

The typical growth curve in plants is:

Heterophyllous development due to environment is an example of:-

1. Developmental noise
2. Norm of the reaction
3. Convergence
4. Plasticity

Plasticity in plant growth means that

1. plant roots are extensible

2. plant development is dependent on the environment

3. stems can extend

4. None of the above

Auxin was isolated by

1.F. W. Went

2.Charles Darwin

3.Francis Darwin

4.F. Skoog

This picture suggests that

1.Tip of the coleorrhiza is the source of Auxin

2.Tip of coleoptile is the source of Auxin

3.Base of coleoptile is the source of Auxin

4.Base of coleorrhiza is the source of Auxin

The application of synthetic plant hormone like IAA, IBA and NAA are best described as:-

(1) prevent early fruit fall before harvesting and is used to produce parthenocarpic fruit

(2) prevent early fruit fall only

(3) to produce both seed less fruits and fruits with seeds

(4) to produce larger fruit