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Q. Name the parts of an angiosperm flower in which development of male and female gametophyte take place.
Answer
Pollen grains represent the male gametophyte in an angiosperm which develops inside the microsporangia. On the other hand, female gametophytes of angiosperms are formed from the megaspore through the process of reduction division which lies inside the nucellus of ovule.
Q. What is meant by monosporic development of female gametophyte?
Answer
In the process of megasporogenesis, one megaspore mother cell divides by mitotic division to produce four megaspores. In many angiosperms one megaspore develops into female gametophyte and rest of the three get degenerate. This is termed monosporic development of female gametophyte.
Q. What is bagging technique? How is it useful in a plant breeding programme?
Answer
Bagging is a technique used to prevent the fertilization of stigma from unwanted pollen by covering the emasculated flower with butter-paper. It is useful in a plant breeding programme because it prevents from unwanted cross pollination.
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