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One of the most resistant known biologic...

One of the most resistant known biological material is

A

lignin

B

hemicellulose

C

sporopollenin

D

lignocellulose

Text Solution

Verified by Experts

The correct Answer is:
C
Sporopollenin is the most resistant biological material known. It is found in the exine of pollen grains. It is resistant to chemical and microbial decomposition. Due to it, the pollen grains are well preserved during fossilisation.
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ARIHANT NEET-SEXUAL REPRODUCTION IN FLOWERING PLANTS -MEDICAL ENTRANCE EXAMS
  1. Outer wall/exine of pollen grain is formed of

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  2. During formation of mature embryo sac from megaspore, the megaspore un...

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  3. One of the most resistant known biological material is

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  4. Male gametophyte of angiosperms is reduced to

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  5. One advantange of cleistogamy is

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  6. For good growth of pollen tube, necessary element is

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  7. Stalk with which ovules remain attached to placenta is called

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  8. The fertilisation in which male gametes are carried through pollen tub...

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

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  10. There are 10 flowers in one individual plant of Crotalaria. In each mi...

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  11. The fusion of male and female pronuclei of the gametes is called

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  12. Embryo developed from the somatic cells are called

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  13. Endosperm is consumed by developing embryo in the seed of

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  14. Unisexuality of flowers prevents

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  15. What does the filiform apparatus do at the entrance into or Function o...

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  16. Which one of the following is resistant action

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  17. Anthesis is a phenomenon which refers to

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  18. The plant part which consists of two generations one within the other ...

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  19. Double fertilisation occurs among

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  20. Number of chromosomes in an angiospermic plant is 14 then the number ...

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