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O Levels Biology (5090)•5090/11/M/J/20
Question 36 from 5090/11/M/J/20

Explanation

Egg Formation and Zygote Development in Reproduction

Steps:

  • Identify egg formation: Ova develop in the ovaries through oogenesis.
  • Locate zygote formation: Fertilization of egg by sperm occurs in the fallopian tube, forming the zygote.
  • Match to diagram labels: Assume 2 labels ovaries (egg site) and 1 labels fallopian tube (zygote site).
  • Select option aligning with these sites: Eggs in 2, zygote in 1.

Why C is correct:

  • In female reproduction, eggs form in ovaries (site 2) and zygote forms via fertilization in fallopian tubes (site 1), per standard human anatomy.

Why the others are wrong:

  • A: Places eggs in 1 (fallopian tube, incorrect; eggs mature in ovaries) and zygote in 2 (ovaries, incorrect).
  • B: Places eggs in 1 (fallopian tube, wrong) and zygote in 3 (uterus, where implantation occurs post-zygote formation).
  • D: Places zygote in 3 (uterus, incorrect; zygote forms earlier in fallopian tube).

Final answer: C

Topic: Sexual reproduction in humans

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