Q. No.What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its root tip cells?
1.
63
2.
84
3.
21
4.
42
1. Gossypium
2. Triticum
3. Brassia
4. Citrus
An example of a seed with endosperm perisperm and caruncle is:
1. cotton
2. coffee
3. lily
4. castor
1. autogamy, but not geitonogamy
2. Both geitonogamy and xenogamy
3. geitonogamy, but not xenogamy
4. autogamy and geitonogamy
What would be the number of chromosomes in the cells of the aleurone layer in a plant species with 8 chromosomes in its synergids?
1. 16
2. 24
3. 32
4. 8
The arrangement of the nuclei in a normal embryo sac in the dicot plants is:
1. 2+4+2
2. 3+2+3
3. 2+3+3
4. 3+3+2
In a cereal grain, the single cotyledon of the embryo is represented by:
| 1. | coleorhiza | 2. | scutellum |
| 3. | prophyll | 4. | coleoptiles |
In some plants, the female gamete develops into an embryo without fertilization. This phenomenon is known as:
| 1. | Parthenogenesis | 2. | Autogamy |
| 3. | Parthenocarpy | 4. | Syngamy |
What is the fate of the male gametes discharged in the synergid?
| 1. | One fuses with the egg and the other fuses with central cell nuclei |
| 2. | One fuses with the egg and the other(s) degenerate(s) in the synergid |
| 3. | All fuse with the egg |
| 4. | One fuses with the egg and the other(s) fuse(s) with a synergid nucleus |
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