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Which of the folliwng statement is wrong...

Which of the folliwng statement is wrongs?

A

pollen grains remain viable for several months because their outer covering is made of sprorpollenin

B

no enzyme can degrade spororpollenin

C

pollen grains are well repersented in fossil strata due to sprorpollenin

D

pollenwall was cavities containing proteins

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The correct Answer is:
A
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AAKASH INSTITUTE-SEXUAL REPRODUCTION IN FLOWERING PLANTS -Assignment (SECTION C)
  1. Endosperm is consumed by the developing embryo in

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  2. In a flowering plant the pollen tube first arrivs in

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  3. Which of the folliwng statement is wrongs?

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  4. Long ribbon like pollen grains are seen in some

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  5. Which one of the following pairs of plant structures has haploid numbe...

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  6. Embryo sac represents

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  7. If an angiospermic male plant is diploid and female plant tetraploid, ...

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  8. The role of double fertilization is to produce:

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  9. An interesting modification of flower shape for insect pollination occ...

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  10. Endosperm is formed during the double fertilization by

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  11. Anemophily type of pollination is found in :

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  12. What is the direction of micropyle in anatropous ovule?

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  13. In angiosperm, all 4 microspores of tetrad are covered by a layer whic...

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  14. In Angiosperms pollen tube liberate their male gametes into the :

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  15. An ovule which becomes curved so that the nucellus and embryo sac lie ...

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  16. When a diploid female plant is crossed with a tetraploid male, the plo...

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  17. Polyembryony commonly occurs in

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  18. Eight nucleated embryosac is

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  19. Adventive embryony in Citrus is due to

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  20. In flowering plants archesporium gives rise to

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