17
4.
Read the following and answer any four questions from 170 to 17 (v).
Flowering plants reproduce sexually by the process known as pollination. In this
process the pollen from male anther is transferred to the female stigma. On the
basis of this process, answer the following questions.
( Which of the following is the correct sequence of event of sexual reproduction
in flower?
(a) Pollination, Fertilisation, Seedling, Embryo
(b) Seedling Embryo, Fertilisation, Pollination
(c) Pollination, Fertilisation, Embryo, Seedling
(d) Enbryo, Seedling, Pollination, Fertilisation
(i) what do we call future shoot of a dicotyledon seed
(a) plumule
(b) radiele
(C) cotyledon
d) both (a) and (b)
(iii) which part provides nourishment to the seeds
(a) Petal
(b) Sepal
(c) egg
(d) ovary
(iv) Which one of the following is one of the characteristics of self-pollinated
flower?
(a) flowers are large and showy
(b) flower remain closed and do not open-
(c) stigma and anthers mature at the same time.
(d) pollen is produced in very large quantities
(v)Flowers having both stamen and pistil are called as?
(a) Unisexual flowers
(b) Bisexual flowers
(c) Androceum
(d) Gynoceium
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Answers:
1. Which of the following is the correct sequence of event of sexual reproduction?
Answer: (d) Embryo, Seedling, Pollination, Fertilisation
2. What do we call a future shoot of a dicotyledon seed?
Answer: (a) plumule
3. Which part provides nourishment to the seeds?
Answer: (c) egg
But to be more precise its the Endosperm that provided the support and nutrients to an embryo.
4. Which one of the following is one of the characteristics of self-pollinated
flower?
Answer: (b) flower remain closed and do not open
5. Flowers having both stamen and pistil are called as?
Answer: Bisexual flowers
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