Offsets are produced by:
1. | Meiotic divisions |
2. | Mitotic divisions |
3. | Parthenocarpy |
4. | Parthenogenesis |
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 |
Codes:
|
A |
B |
C |
D |
(1) |
4 |
3 |
2 |
1 |
(2) |
2 |
1 |
4 |
3 |
(3) |
1 |
2 |
4 |
3 |
(4) |
3 |
1 |
4 |
2 |
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