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Substance found in exine but absent in g...

Substance found in exine but absent in germ pores ……… .

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SURA PUBLICATION-ASEXUAL AND SEXUAL REPRODUCTION IN PLANTS-Answer in one word
  1. The region of a anther wall where dehiscene occurs ……….. .

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  2. Layer of anther wall which nourishes the pollen ………………. .

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  3. Substance found in exine but absent in germ pores ……… .

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  4. Science which deals with study of pollen grains ……….. .

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  5. Substance of pollen wall which preserves the pollen during fertilizati...

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  6. An oily layer found on pollen surface …….. .

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  7. Name the first cell of male gametophyte of a lowering plant ………… .

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  8. At which cellular stage , does the pollen grains are usually liberated...

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  9. Cavity in the ovary which bears the ovules …………… .

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  10. Another name for megasporangium in a flowering plant ……………. .

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  11. Stalk of the ovule …………. .

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  12. Tissue found in the ovule ……………. .

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  13. Protective coverings of a ovule …………… .

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  14. Female gametophyte in a flowering plant ………… .

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  15. An ovule which bears horse shoe shaped nucellus …………. .

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  16. Common type of ovule found in majority of the plants ……….. .

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  17. Number of cells and nuclei found in a embryo sac ………. .

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  18. Pollination which occurs without opening of flowers ………… .

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  19. Maturation of anther and stigma at different times …………… .

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  20. Pollination by birds ……………..

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