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Pollen tube is covered by a membrane mad...

Pollen tube is covered by a membrane made of

A

amino acids

B

carbohydrates

C

cellulose

D

lignocellulose

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The correct Answer is:
D
NA
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ARIHANT NEET-SEXUAL REPRODUCTION IN FLOWERING PLANTS -ASORTED QUESTIONS
  1. What is the termused for schematic illustration of the pollen grain?

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  2. …………………… is an example for the bisporic embryo sa.

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  3. Pollen tube is covered by a membrane made of

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  4. The micropylar part of the embryo sac protrudes out of ovule in

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  5. The embryo sac becomes haustrial and reaches the base of the stigma in

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  6. In Cortaderia jubaa, a haustorium arises from

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  7. The Oenothera type embryo sac lacks

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  8. Which condition is more advanced

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  9. A primitive massive nucellus occurs in some ovules. The condition is c...

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  10. Of the two cells of zygote, the cell near to micropyle is termed as

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  11. The first division of zygote is oblique in

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  12. Milky water of green coconut is liquid

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  13. The term xenia denotes the effect of pollen on the

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  14. Both micropylar and chalazal endosperm haustoria are formed in

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  15. An endosperm having irregular boundaries is termed as

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  16. Suspensor formation in Sagittaria occurs at………………… celled stage.

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  17. A chalazal endosperm haustorium with finger like appendages occurs in

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  18. Mosaic endosperm was first reported in

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  19. The ploidy level of PEN in Oenotera is

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  20. The name of outermost layer of endosperm in maize is

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