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8-nucleate embryo sac is :...

8-nucleate embryo sac is :

A

Always bisporic

B

Always tetrasporic

C

always monosporic

D

sometimes monosporic, sometimes bisporic and sometimes tetrasporic

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The correct Answer is:
D
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MBD PUBLICATION-SEXUAL REPRODUCTION IN FLOWERING PLANTS-QUESTION BANK
  1. Which one of the following is surrounded by a callose wall ?

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  2. Male gamete in angiosperm is produced by :

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  3. 8-nucleate embryo sac is :

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  4. Double fertilization (or triple fusion) leading to initiation of endos...

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  5. Many scientists consider viruses as living entities because these:

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  6. The mode of asexual reproduction in bacteria are:

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  7. Pollen tube usually enters the embryo sac :

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  8. Which one of the following represents an ovule , where the embryo sac ...

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  9. Which of the followiing represent the edible part of the fruit of litc...

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  10. Study of pollen grain is called:

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  11. Select the correct order of endosperm types:

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  12. Endosperm is consumed by developing embryo in the seed of:

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  13. Nucellar polyembryony is reported in species of

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  14. The presence of filiform apparatus is the characteristic feature of

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  15. What would be the number of chromosomes of the aleurone cells of a pla...

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  16. The gynoecium consists of many free pistils in flowers of:

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  17. Both autogamy and geitonogamy are prevented in

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  18. An organic substance that can withstand environ mental extremes and ca...

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  19. Placentation in tomato and lemon is:

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  20. Which of these is a condition that makes flowers invariably autogamous...

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