Geitonogamy involves:
1. | Pollination of a flower by the pollen from another flower of the same plant. |
2. | Pollination of a flower by the pollen from another same flower. |
3. | Pollination of a flower by the pollen from a flower of another plant in the same population. |
4. | Pollination of a flower by the pollen from a flower of another plant belonging to a distant population. |
Male gametophyte with least number of cells is present in:
1. Pteris
2. Funaria
3. Lilium
4. Pinus
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 apparatus is to:
1. | Recognize the suitable pollen at the stigma |
2. | Stimulate division of generative cell |
3. | Producer nectar |
4. | Guide the entry of the pollen tube |
Non- albuminous seed is produced in:
1. Maize
2. Castor
3. Wheat
4. Pea
1. | having no reserve food |
2. | being a diploid tissue |
3. | its formation by fusion of secondary nucleus with several sperms |
4. | being a haploid tissue |
Advantage of cleistogamy is:
1. More vigorous offspring
2. No dependence of pollinator
3. Vivipary
4. Higher genetic variability
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
Both, autogamy and geitonogamy are prevented in:
1. Papaya
2. Cucumber
3. Castor
4. Maize