MEDIUM
Earn 100
Identify the respective ploidy of the following parts of flowering plants.
Ovary, Anther, Egg, Pollen, Male gamete and Zygote
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Important Questions on Sexual Reproduction in Flowering Plants
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The given flow chart shows the reproductive structure & events of a gymnospermic plant. Identify the structure/events those are blank.
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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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Fertilization in plants occurs in the :-
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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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Match the column
| Column I | Column II | ||
| (a) | Helobial | (i) | Cucurbita |
| (b) | Hypophysis | (ii) | Areca |
| (c) | Ruminate endosperm | (iii) | Removal of anther from floral bud |
| (d) | Emasculation | (iv) |
Radicle |
| (e ) | Mesogamy | (v) | Asphodelus |
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plants :-
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(a) Recent record of 2000 year old viable seed is of the date palm, Phoenix dactylifera discovered during the archaeological excavation of king Herod's palace near Dead sea.
(b) Apomixis-special mechanism to produce seed with fertilization.
(c) Flower is modified leaf
(d) Seed have better adaptive strategies for dispersal to new habitats and help the species to colonise in other area.
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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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