Exine of pollen-grain is made up of
Sporopollenin
Cellulo-pectin
Callose
Cellulose
Additional Questions
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In which one of the following pollination is autogamous? |
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The mature anther wall comprises an epidermis followed by a layer of radially elongated cells with fibrous bands of callose called endothelium whose function is |
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Double fertilization involves |
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Special type of grafting, in which scion unite with the stock while still attached to parent plant |
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In a flowering plant archesporium gives rise to |
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What is the ratio of equational divisions that take place in Cycas and angiosperms respectively leading to the formation of male gametes from pollen grains? |
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Helobial type of endosperm is seen in |
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Asexual reproduction differs from sexual reproduction as |
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Insect pollinated flowers are characterized by |
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8-nucleate embryosacs are |
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