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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
What is apomixis?
Explain various categories of apomixis.
In ______a diploid sporophyte cell produces a diploid gametophyte without undergoing meiosis.
Identify the CORRECT statements with respect to non-recurrent apomixis.
i. Plants produced by this method are generally sterile and do not reproduce sexually.
ii. In this, megaspore mother cell undergoes usual meiotic division and a haploid embryo sac is formed.
______ refers to the formation of seeds without fertilization.
Are pollination and fertilization necessary in apomixis? Give reasons.
Are parthenocarpy and apomixis different phenomena? Discuss their benefits.
Apospory is the direct formation of ______.
Haploid cells belong to ______.
What is the importance of apomixis?
