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प्रश्न
Explain following term:
Apomixis
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उत्तर
It is the phenomenon of the formation of the embryo(s) through the asexual reproduction method without the formation of gametes and the act of fertilization. Alternatively, it is unusual sexual reproduction where there is no meiosis and syngamy. The embryo develops in the ovule, and the ovule develops to form a seed. In apomixis, when a gametophyte organ or cell produces embryo-like structure without fertilization, it is called apogamy. Similarly, when a diploid sporophyte cell produces a diploid gametophyte without undergoing meiosis, it is called apospory, e.g. Orange, Mango.
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संबंधित प्रश्न
Are pollination and fertilization necessary in apomixis?
Explain various categories of apomixis.
Identify the CORRECT term which describes the following condition.
In some plants, the female gamete develops into embryo without fertilization.
Adventive embryony can be observed in ______.
The phenomenon observed in some plants wherein parts of the sexual apparatus are used for forming embryos without fertilization is called ______.
A form of asexual reproduction that mimics sexual reproduction is ______.
Are pollination and fertilization necessary in apomixis? Give reasons.
Assertion: Apomictic embryos are genetically identical to the parent plant.
Reason: Apomixis is the production of seeds without fertilization.
Which of the following defines apomixis correctly?
- Production of the embryo from an unfertilised egg.
- Production of seed without syngamy.
- Production of fruit without fertilisation.
- Production of seed without meiosis.
- Production of seed without mitosis.
Choose the correct options.
What is the importance of apomixis?
