Which of the following is not a layer that the sperm has to encounter before reaching the egg nuclei?(a) Zona pellucida(b) Corona radiata(c) Perivitelline space(d) Zona radiataThis question was posed to me during a job interview.I'm obligated to ask this question of Human Reproduction in chapter Human Reproduction of Biology – Class 12

Which of the following is not a layer that the sperm has to encounter

1.	Which of the following is not a layer that the sperm has to encounter before reaching the egg nuclei?(a) Zona pellucida(b) Corona radiata(c) Perivitelline space(d) Zona radiataThis question was posed to me during a job interview.I'm obligated to ask this question of Human Reproduction in chapter Human Reproduction of Biology – Class 12
Answer» Correct option is (d) Zona radiata Explanation: The egg nuclei and CYTOPLASM is ENVELOPED by VARIOUS layers which prevent DESICCATION and provides nourishment and suitable habitat for the DEVELOPMENT of the egg. The sperm has to break these barriers to reach the egg nuclei.

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