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प्रश्न
Differentiate between microsporogenesis and megasporogenesis.
उत्तर
| Microsporogenesis | Megasporogenesis | |
| 1. | Microsporogenesis is the process of forming and differentiating pollen grains from microspore mother cells by meiosis. | The process of the formation and differentiation of megaspores from megaspore mother cells by meiosis is known as megasporogenesis. |
| 2. | Pollen grains are produced in the anther, which is a broader knob-like fertile part of the stamen. | Ovules (which are future seeds) are formed in the ovary. |
| 3. | All four pollen grains that are formed from the microspore mother cell are functional. | Only one out of the four megaspores is functional. |
APPEARS IN
संबंधित प्रश्न
Answer the following question.
Where does the process of megasporogenis start in an angiosperm? Describe the process up to the formation of an embryo sac.
Ovule is ______.
Polygonum type of embryo sac/typical female gametophyte of angiosperms is ______.
Embryo sac is also known as ______.
Nucellus embryo is ______.
Ovule is straight with funiculus, embryo sac, chalaza, and micropyle lying on one straight line. It is ______.
Through which cell of the embryo sac, does the pollen tube enter the embryo sac?
What is the function of filiform apparatus in an angiospermic embryo sac?
An embryo may sometimes develop from any cell of embryo sac other than egg. It is termed as ______.
When micropyle, chalaza and hilum lie in a straight line, the ovule is said to be ______.
The part of gynoecium that determines the compatible nature of pollen is ______.
Part of the gynoecium which receives the pollen is called ______.
During the process of fertilisation the pollen tube of the pollen grain usually enters the embryo sac through ______.
Which of the following occupies a central position in flower?
Embryo sac → Nucellus → Integuments, is the correct sequence of parts in the ovule of an angiosperms.
The hilum is a scar on the:
Megasporangium is equivalent to ______.
