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AP Intermediate 2nd Year Human Reproduction — practice questions

Explore 5 free Human Reproduction questions in AP Intermediate 2nd Year Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Human Reproduction questions and exercises with answers

Showing questions 1–5 of 5.

For normal male fertility, at least what percentage of ejaculated sperms must show vigorous motility?Read the answer and worked solution →At puberty, approximately how many primary follicles remain in each ovary?Read the answer and worked solution →The new membrane that forms around the secondary oocyte just before ovulation is called the:Read the answer and worked solution →In human females, the first menstruation at puberty is termed:Read the answer and worked solution →The average menstrual cycle in human females lasts approximately:Read the answer and worked solution →

Worked practice questions

For normal male fertility, at least what percentage of ejaculated sperms must show vigorous motility?

  1. 80%
  2. 40%
  3. 20%
  4. 60%
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Correct answer: B. 40%

As per your syllabus, at least **40% vigorous motility** AND at least **60% normal shape/size** are required for normal fertility.

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At puberty, approximately how many primary follicles remain in each ovary?

  1. 1 - 2 million
  2. 60,000 - 80,000
  3. 5 - 10 million
  4. 1,000 - 2,000
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Correct answer: B. 60,000 - 80,000

A large number of primary follicles degenerate during the phase from birth to puberty. Only **60,000–80,000 primary follicles** remain in each ovary at puberty.

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The new membrane that forms around the secondary oocyte just before ovulation is called the:

  1. Zona pellucida
  2. Theca interna
  3. Vitelline membrane
  4. Corona radiata
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Correct answer: A. Zona pellucida

The **zona pellucida** is the glycoprotein membrane that surrounds the secondary oocyte. Sperm must penetrate it to fertilise the ovum, and after entry of one sperm it blocks further sperms.

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More Biology topics

Genetics and EvolutionReproduction in Organisms & PlantsBiotechnology and ApplicationsBiology in Human Welfare & HealthEcology and EnvironmentReproductive HealthOrganisms and PopulationsBiodiversity and Conservation