Advertisements
Advertisements
Question
State what is apomixis. Write its significance. How can it be commercially used?
Solution
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.
APPEARS IN
RELATED QUESTIONS
State what is apomixis. Comment on its significance. How can it be commercially used?
Mention one advantage of apomictic seeds to farmers.
Fill in the blank:
The ______ is the base of the flower to which other floral parts are attached.
Fill in the blank:
________is the transfer of pollen grains from the anther of the flower to the stigma of the same or a different flower
Match the column.
| Column - I (Structure before seed formation) |
Column - II (Structure after seed formation) |
||
| A. | Funiculus | I. | Hilum |
| B. | Scar of ovule | II. | Tegmen |
| C. | Zygote | III. | Testa |
| D. | Inner integument | IV. | Stalk of seed |
| V. | Embryo | ||
Which of the following is TRUE with respect to cleavage polyembryony?
Apomixis is a type of reproduction that results is the development of a/an ______.
In case of polyembryony, if an embryo develops from the synergid and another from the nucellus which is haploid and which is diploid?
What is polyembryony and how can it be commercially exploited?
Explain following term:
Polyembryony
