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Earn 100
The three cells found in a pollen grain when it is shed at -celled stage are
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Important Questions on Sexual Reproduction in Flowering Plants
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In a fully developed male gametophyte the number of nuclei is-
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Refer to the given figure of reproductive structure of Papaver and identify X and Y.
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Megasporangium along with its protective integuments is called
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A typical angiospermous ovule is attached to the placenta by means of a stalk called X. Body of the ovule fuses with X in the region called Y. Identify X and Y.
| X | y | |
|---|---|---|
| (i) | Funicle | Hilum |
| (ii) | Hilum | Funicle |
| (iii) | Funicle | Micropyle |
| (iv) | Hilum | Chalaza |
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Identify the parts labelled A, B, C and D in the given figure and select the correct option.
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Match Column I with Column II and select the correct option from the given codes.
| Column I | Column II | ||
|---|---|---|---|
| Funicle | Mass of parenchymatous cells | ||
| Hilum | Basal part of ovule | ||
| Integument | one of two protective layers of ovule | ||
| Chalaza | Region where body of ovule fuses with funicle | ||
| Nucellus | Stalk of ovule |
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Mature ovules are classified on the basis of funiculus. If micropyle comes to lie close to the funiculus, what is the ovule termed as?
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When micropyle, chalaza and hilum lie in a straight line, the ovule is said to be -----------------------.
