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प्रश्न
Explain any three advantages that seeds offer to angiosperms.
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उत्तर
Seeds offer the following advantages to angiosperms:
(i) They provide nourishment and parental care to the developing embryo.
(ii) They protect the embryo from harsh environmental conditions.
(iii) The dispersal of seeds to far-off places prevents competition among the members of the same species, thus preventing their extinction.
संबंधित प्रश्न
State what is apomixis. Comment on its significance. How can it be commercially used?
Mention one advantage of apomictic seeds to farmers.
State what is apomixis. Write its significance. How can it be commercially used?
How polyembryony can be commercially exploited?
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.
What is polyembryony and how can it be commercially exploited?
Give reason: Nucellar polyembryony is significant in horticulture.
Explain following term:
Polyembryony
