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Higher organisms have resorted to sexual...

Higher organisms have resorted to sexual reproduction in spite of its complexity. Why?

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Higher organisms have resorted to sexual reproduction inspite of its complexity because sexual reproduction helps (i) production of offspring which is much and strong, superior, better and strong than either of the two parents i.e., hybrid vigour.(ii) introduction of variations contributing to the evolution of new species (iii) the organisms can survive better under unfavourable conditions so Offsprings adapt quickly to the changed environmental conditions.
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BETTER CHOICE PUBLICATION-SEXUAL REPRODUCTION IN FLOWERING PLANTS -LONG ANSWER TYPE QUESTIONS
  1. Describe the various steps involved in seed germination.

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  2. Discuss the development of dicot embryo with suitable diagram.

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  3. Higher organisms have resorted to sexual reproduction in spite of its ...

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  4. Explain why meiosis and gametogenesis are always interlinked?

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  5. Draw a well labelled diagram of T.S. of mature anther of an angiosperm...

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  6. What is triple fusion ? Where and how does it take place ? Name nuclei...

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  7. Write four differences between dicot and monocot seeds.

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  8. Give six differences between wind pollinated flowers and insect pollin...

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  9. Why is apple called a false fruit? Which part of flower form its fruit...

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  10. Write four characteristics of wind pollinated flowers.

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  11. Write down two advantages and two disadvantages of self-pollination.

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  12. Write a note on development of Endosperm.

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  13. Explain three types of Endosperm with examples.

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  14. What do you understand by the development of monocoat embryo. Support ...

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  15. What do you mean by monosporic development of female gametophyte?

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  16. With a neat labelled diagram, explain 7 celled 8 nucleate mature femal...

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  17. What is bithecous anther ?

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  18. Write about the structure of microsporangium with suitable diagram

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  19. Write about microsporogenesis leading to formation of microspores.

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  20. What is precocious germination ?

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