- 1(current)
Q. No.Which one is surrounded by callose wall
1. Male gamete
2. Pollen grain
3. Egg
4. Microspore mother cell
Male gametophyte in angiosperms produces:
1. Single sperm and a vegetative cell
2. Single sperm and two vegetative cells
3. Three sperms
4. Two sperms and a vegetative cell
Which one of the following statements is wrong?
| 1. | Vegetative cell is larger than generative cell |
| 2. | Pollen grains in some plants remain viable for months |
| 3. | Intine is made up of cellulose and pectin |
| 4. | When pollen is shed at a two-celled stage, double fertilization does not take place |
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Pollen tablets are available in the market for:
1. In vitro fertilization
2. Breeding programmes
3. Supplementing food
4. Ex situ conservation
Function of filiform apparutus is to :
1. Recognize the suitable pollen at stigma
2. Stimulate division of generative cell
3. Produce nectar
4. Guide the entry of pollen tube
Which one of the following statements is correct?
1. Sporogenous tissue is haploid
2. Endothecium produces the microspores
3. Tapetum nourishes the developing pollen
4. Hard outer layer of pollen is called intine
Which one of the following is resistant to enzyme action
1. Pollen exine
2. Leaf cuticle
3. Cork
4. Wood fibre
Pollen grains can be stored for several years in liquid nitrogen having a temperature of
1. - 196C
2. - 80C
3. - 120C
4. - 160C
Filiform apparatus is characteristic feature of:
1. Nucellar embryo
2. Aleurone cell
3. Synergids
4. Generative cell
- 1(current)
Q. No.
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