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How do pollen grains withstand high temp...

How do pollen grains withstand high temperature and strong acids?

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Due to presence of highly resistant sporopollen in exine layer.
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BETTER CHOICE PUBLICATION-SEXUAL REPRODUCTION IN FLOWERING PLANTS -MOST EXPECTED QUESTIONS
  1. How do pollen grains withstand high temperature and strong acids?

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  2. What is perisperm?

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  3. What is another name of female gametophyte?

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  4. Define emasculation. How it is done ?

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  5. What will be the advantage of transforming hybrid into apomictic form?

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  6. Draw labelled diagram of a mature pollen grain.

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  7. How do plants produce seeds through apomixis? Explain with the help of...

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  8. In the adjacent figure of a typical dicot embryo, label the part (1), ...

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  9. The meiocyte of maize has 20 chromosomes. Write the number of chromoso...

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  10. Differentiate between microsporogenesis and megasporogenesis. Which ty...

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  11. What are chasmogamous flowers? Can cross-pollination occur in cleistog...

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  12. What is bagging technique? How is it useful in plant breeding programm...

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  13. What is Apomixis ? What is its importance ?

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  14. LS of a maize grain is given below. Label the parts A, B, C and D in i...

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  15. What are true, false and parthenocarpic fruits?

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  16. Most zygotes in angiosperms divide only after certain amount of endosp...

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  17. Groundnut seeds are exalbuminous and castor. seeds are albuminous. Giv...

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  18. Micropyle remains as a small pore in the seed. Give reason why?

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  19. Integuments of an ovule harden and the water content is highly reduced...

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  20. Apple and cashew nuts are not called true fruits. Give reason why?

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