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(a) Draw a labelled diagram of sectional...

(a) Draw a labelled diagram of sectional view of human ovary showing different stages of oogenesis.
(b) Where is morula formed in humans? Explain the process of its development from the zygote.

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(b) Morula is formed in Fallopian tube. The zygote divides mitotically in successive steps. In the first division two blastomeres are formed during second division four and during third division eight blastomeres are formed. The eight to sixteen cell stage embryo is called morula
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TRUEMEN BIOLOGY ENGLISH-REPRODUCTION-SECTION-D
  1. Explain the different stages of oogenesis in human starting from life ...

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  2. (a) When and how does placenta develop in human female? (b) How is ...

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  3. Give reasons why: (i) Most zygotes in angiosperms divide only afte...

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  4. Describe in sequence the events that lead to the development of a 3-ce...

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  5. (a ) Trace the development of megaspore mother cell up to the formatio...

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  6. (a ) Draw a labelled longitudinal view of an albuminous 'seed'· (b)...

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  7. Describe the post-zygotic events leading to implantation and placenta ...

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  8. Although sexual reproduction is a long drawn, energy-intensive complex...

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  9. Embryo sacs of some apomitic species appear normal but contain diploid...

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  10. Meiotic division during oogenesis is different from that in spermatoge...

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  11. Enumerate and describe any five reasons for introducing sex education ...

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  12. The following is the illustration of the sequence of ovarian events (a...

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  13. (a) Draw a schematic labelled diagram of a fertilised embryo sac of an...

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  14. (a) Draw a labelled diagram of sectional view of human ovary showing d...

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  15. (a) Draw a labelled diagram of the sectional view of a typical anatrop...

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  16. (a) Draw a diagrammatic sectional view of a mature anatropous ovule an...

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  17. (a) Draw a diagrammatic sectional view of the female reproductive syst...

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  18. (a) Draw a labelled schematic diagram of the transverse section of a m...

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  19. Write two differences between spermtogenesis and oogenesis

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  20. (a) Draw a diagram of a mature embryo sac of an angiosperm and label t...

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