Rotifers:
(1) Exhibit adult reproductive structures in juvenile phase
(2) Are plants that can be both monoecious or dioecious
(3) Produce gametes by mitosis
(4) Are animals capable of reproducing by 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 the asexual reproduction are called clone
(2) Microscopic, motile asexual reproductive structures are called zoospores
(3) In potato, banana and ginger, the plantlets arise from the internodes present in the modified stem.
(4) Water hyacinth, growing in the standing water, drains oxygen from water that leads to death of fishes.
Which one of the following generates new genetic combinations leading to variation?
(1) Vegetative reproduction
(2) Parthenogenesis
(3) Sexual reproduction
(4) Nucellar polyembryony
Which one of the following is wrong about Chara?
(1) Upper oogonium, and lower round anthredium
(2) Globule and nucule present on the same plant
(3) Upper anthredium and lower oogonium
(4) Globule is male reproductive structure
The 'Eyes' of the potato tuber are
(1) flower buds
(2) shoot buds
(3) axillary buds
(4) root buds
Which of the following animals is not viviparous?
1. Flying fox (bat)
2. Elephant
3. Platypus
4. Whale
The plant part which consists of two generations, one within the other, is
1. germinated pollen grain
2. embryo
3. unfertilized ovule
4. seed
A scion is grafted to a stock. The quality of fruits produced will be determined by the genotype of
(1) stock
(2) scion
(3) both stock and scion
(4) neither stock nor scion.
Which form of reproduction is correctly matched?
(1) Euglena → transverse binary fission
(2) Paramecium → longitudinal binary fission
(3) Amoeba → multiple fission
(4) Plasmodium → binary fission