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Earn 100
Does a gametophyte depend upon sporophyte?
Important Questions on Sexual Reproduction in Flowering Plants
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(i) Endothecium lies below epidermis.
(ii) Fusion of egg with male gamete is called apogamy.
(iii) Synergids are haploid.
(iv) The point at which funicle touches the ovule is raphe.
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Represent the union of two sets by Venn diagram for each of the following.
is a prime number between and
is an odd number between and
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Ovary, Anther, Egg, Pollen, Male gamete and Zygote
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a. As soon as meiosis begins, the plasmodesmata between PMC and tapetal cells are broken.
b. Bird pollinated flowers are usually colourless and odourless.
c. The ovules in the family Malvaceae are campylotropous.
d. The tapetal cells may divide by endomitosis and polyteny.
e. The wall surrounding the megaspore is generally cutinized.
f. In pollination, a functional pollen grain carrying the male gametes reaches the embryosac of an ovule.
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Identify in the given diagram of of flower and choose the correct option.
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| Column I | Column II | ||
| a. | A most critical event in sexual reproduction | (i) | Gametogenesis |
| b. | The vital link that ensures continuity of species | (ii) | Gamete transfer |
| c. | The progenitor of next generation | (iii) | Zygote |
| d. | Plants with both male and female reproductive structures present in the same | (iv) | Fertilization |
| (v) | Meiocyte | ||
| (vi) | Embryo | ||
| (vii) | Monoecious | ||
| (viii) | Dioecious |
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A. Androecium
B. Carpel
C. Corolla
D. Sepal
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Rakesh asked the following question from his father and requested him to answer. What is floriculture? Anticipate his answer.
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(i) Tapetum nourishes the developing pollen grains.
(ii) Hilum represents the junction between ovule and funicle.
(iii) In aquatic plants such as water hyacinth and water lily, pollination occurs by water.
(iv) The primary endosperm nucleus is triploid.
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