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प्रश्न
Give an example of an angiosperm seed that has a perisperm. Name the part the perisperm develops from.
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उत्तर
The perisperm is developed from the residual, persistent nucellus in some seeds. It is found in black pepper and beet.
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संबंधित प्रश्न
Read the statement and answer the questions that follow.
A flower of brinjal has 520 ovules in its ovary. However, it produces a fruit with only 480 viable seeds.
(a) What could have prevented the rest of the 40 ovules from maturing into viable seeds? Explain giving a reason.
(b) Describe the development of a dicot embryo in a viable seed.
(c) Why certain angiospermic seed albuminous while others are exalbuminous? Explain.
Name the terminal stage of ageing in the life cycle of plants.
Give a reason for the Following:
Pollen grains of wind-pollinated flowers are produced in large quantities.
Pollen grains are well preserved as fossils because of the presence of ______
Place the following groups of plants in order, beginning with those that first appeared on the earth and progressing toward those that appeared most recently in time.
What is the similarity between gymnosperms and angiosperms?
Male and female reproductive structures of the angiosperms are ______.
What is the floral envelope called when the calyx (sepals) and corolla (petals) cannot be differentiated from one another?
Which of the following is considered an "essential whorl" of a flower?
What is the main function of the corolla?
