Gibberellic acid is a/an:-
1. lndole compound
2. Terpene
3. Adenine derivative
4. Carotenoid

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The PGR used to initiate flowering and for synchronizing fruit-set in pineapples is:

1. Abscisic acid
2. Cytokinin
3. Auxin
4. Ethylene

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Cytokinin does not help in:

1. Lateral shoot growth
2. Overcoming apical dominance
3. Adventitious shoot formation
4. Promoting leaf senescence

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In most situations, which of the following acts as an antagonist to GAs?
1. ABA
2. IAA
3. Kinetin
4. Ethylene

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Which of the following is the site for perception of light/dark in plants?
1. Root apex
2. Shoot apex
3. Leaves
4. Flower

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A flash of red light followed by a flash of far-red light given during the middle of the night to a short-day plant will likely 
1. cause increased flower production.
2. have no effect upon flowering.
3. inhibit flowering.
4. stimulate flowering.

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Both red and blue light are involved in?
1. stem elongation.
2. photoperiodism.
3. positive phototropism.
4. tracking seasons.

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Which of the following statements about plant hormones is false?

1. The growth of plants in nature is probably regulated by a combination of growth-stimulating and growth-inhibiting hormones.

2. Abscisic acid generally promotes growth.

3. Gibberellins stimulate cell enlargement.

4. Cytokinins promote cell division.

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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

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All the following plants are biennials except:-
1. Sugarbeet
2. Cabbages
3. Carrots
4. Wheat

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