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
The gynoecium consists of many free pistils in flowers of:
1. Aloe
2. Tomato
3. Papaver
4. Michelia
The coconut water and the edible part of coconut are equivalent to:
1. Endosperm
2. Endocarp
3. Mesocarp
4. Embryo
Apomictic embryos in Citrus arise from:
1. synergids
2. maternal sporophytic tissue in ovule
3. antipodal cells
4. diploid egg
1. Gossypium
2. Triticum
3. Brassia
4. Citrus
Transfer of pollen grains from the anther to the stigma of another flower of the same plant is called:
1. xenogamy
2. geitonogamy
3. karyogamy
4. autogamy