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प्रश्न
Mention one advantage of apomictic seeds to farmers.
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उत्तर
Embryos formed through apomixis are generally free from infections.
APPEARS IN
संबंधित प्रश्न
Explain any three advantages that seeds offer to angiosperms.
Explain the different ways apomictic seeds can develop, Give an example of each.
Define Apomixis.
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?
Fill in the blank:
The pollen grains represent the ________.
Fill in the blank:
The ________contains the egg or ovum.
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
Once the pollen reaches the stigma, the pollen tube traverses down the ________ to the ovary where fertilization occurs.
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 | ||
Give an account of polyembryony.
Apomixis is a type of reproduction that results is the development of a/an ______.
The polyembryony commonly occurs in ______.
Adventive polyembryony in citrus is due to ______.
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 pollen grain?
Explain following term:
Polyembryony
