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Which of the following has proved helpfu...

Which of the following has proved helpful in preserving pollen of fossils

A

Pollenkitt

B

Cellulosic intine

C

Oil content

D

Sporopollenin

Text Solution

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The correct Answer is:
D
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PHYSICS WALLAH-SEXUAL REPRODUCTION IN FLOWERING PLANTS-NEET PAST 10 YEARS QUESTIONS
  1. Persistent nucellus in the seed is known as

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  2. What is the fate of the male gametes discharged in the synergid ?

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  3. Which of the following has proved helpful in preserving pollen of foss...

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  4. Pollen grains can be stored for several years in liquid nitrogen hav...

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  5. Double fertilisation is

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  6. Functional megaspore in an angiosperm develops into

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  7. A dioecious flowering plant prevents both

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  8. Fowers which have single ovule in the ovary and are packed into inflor...

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  9. Attractants and reward are required for

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  10. The hollow foliar structure in a wheat embryo that encloses the shoot ...

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  11. Choose the correct sequence representing the ploidy of Nucellus, Megas...

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  12. Continued self-pollination results in:

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  13. Pollen grains can be stored for years in liquid nitrogen, maintained a...

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  14. The ovule of an angiosperm is technically equivalent to

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  15. Pollination in water hypacinth and water lily is brought about by the ...

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  16. In majority of angiosperms

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  17. Which of the following statements is not correct?

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  18. Seed formation without fertilization in flowering plants involves the ...

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  19. Cotyledon of maize grain is called

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  20. Which one of the following statements is not true?

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