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Question
Explain any three advantages that seeds offer to angiosperms.
Solution
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.
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How polyembryony can be commercially exploited?
Fill in the blanks:
The male whorl, called the ________ produces ________.
Fill in the blank:
The pollen grains represent the ________.
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The ______ is the base of the flower to which other floral parts are attached.
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________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.
Adventive polyembryony in citrus is due to ______.
The plant part which consists of two generations, one within the other-
- Pollen grains inside the anther.
- Germinated pollen grain with two male gametes.
- Seed inside the fruit.
- Embryo sac inside the ovule
Choose the correct option.
