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प्रश्न
State what is apomixis. Write its significance. How can it be commercially used?
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उत्तर
Apomixis is a form of asexual reproduction in which an embryo is formed without meiosis and fusion of haploid gametes. It can take place through diploid sporophytic cells of the ovule or from an unfertilized egg (parthenogenesis) itself.
Significance:
Certain species of plants belonging to Asteraceae, and grasses exclusively use the phenomenon of apomixis for producing seeds.
Commercial applications of apomixis:
1. By apomixis, hybrid varieties of seeds can be produced, which will provide higher and better yield.
2. Apomixis prevents the loss of specific characteristics in the hybrid plants.
3. Apomixis is a cost-effective method of producing seeds.
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संबंधित प्रश्न
Answer the following question.
When a seed of orange is squeezed, many embryos, instead of one are observed. Explain how it is possible.
How polyembryony can be commercially exploited?
The ______ collect the pollen grains.
Fill in the blank:
The pollen grains represent the ________.
Fill in the blank:
The ______ is the base of the flower to which other floral parts are attached.
Once the pollen reaches the stigma, the pollen tube traverses down the ________ to the ovary where fertilization occurs.
Which of the following is TRUE with respect to cleavage polyembryony?
The polyembryony commonly occurs in ______.
What is polyembryony and how can it be commercially exploited?
Give reason: Nucellar polyembryony is significant in horticulture.
