You are given a tissue with its potential for differentiation in an artificial culture. Which of the following pairs of hormones would you add to the medium to secure shoots as well as roots?
1. IAA and gibberellin
2. Auxin and cytokinin
3. Auxin and abscisic acid
4. Gibberellin & abscisic acid
The process which makes a major difference between C3 and C4 plants is:
| 1. | glycolysis | 2. | Calvin cycle |
| 3. | photorespiration | 4. | respiration |
Which one of the following statements is not correct?
| 1. | Offspring produced by asexual reproduction is called clone |
| 2. | Microscopic motile asexual reproductive structures are called zoospores |
| 3. | In potatoes, bananas, and ginger, the plantlets arise from the internodes present in the modified stem |
| 4. | Water hyacinth growing in standing water drains oxygen from water that leads to the death of fish |
Which one of the following generates new genetic combinations leading to variation?
1. Vegetative reproduction
2. Parthenogenesis
3. Sexual reproduction
4. Nucellar polyembryony
Match Column I with column II and select the correct option using the codes given below:
| Column I | Column II | ||
| A. | Pistils fused together | 1. | Gametogenesis |
| B. | Formation of gametes | 2. | Pistillate |
| C. | Hyphae of higher ascomycetes | 3. | Syncarpous |
| D. | Unisexual female flower | 4. | Dikaryotic |
1. A-4 B-3 C-2 D-1
2. A-2 B-1 C-4 D-3
3. A-1 B-2 C-4 D-3
4. A-3 B-1 C-4 D-2
In the majority of angiosperms:
| 1. | egg has a filiform apparatus |
| 2. | there are numerous antipodal cells |
| 3. | reduction division occurs in the megaspore mother cells |
| 4. | a small central cell is present in the embryo sac |
Pollination in water hyacinth and water lily is brought about by the agency of:
| 1. | water | 2. | insects or wind |
| 3. | birds | 4. | bats |
The ovule of an angiosperm is technically equivalent to:
1. megasporangium
2. megasporophyll
3. megaspore mother cell
4. megaspore
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