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Kerala Board Plus Two Biology Chapter 1: Human Reproduction Important Questions

Cover the key concepts of Kerala Plus Two Biology Chapter 1, Human Reproduction, through important questions on reproductive systems, hormones, fertilisation, implantation, pregnancy and embryonic development. Use the mark-wise questions to revise essential topics and practise writing concise, accurate answers for the examination.
authorImageMishika Gupta24 Oct, 2026
Kerala Board Plus Two Biology Chapter 1: Human Reproduction Important Questions

 

Human Reproduction can be challenging to revise because it involves several biological processes, reproductive structures and hormonal changes. Topics such as gametogenesis, ovulation, fertilisation, implantation and embryonic development require you to remember key terms and understand how different stages are connected. Writing answers according to the marks allotted can also be difficult when questions require specific functions, definitions or explanations.

Kerala Plus Two Biology Chapter 1, Human Reproduction, important questions with solutions can help you revise these concepts and prepare for the board examination. The questions are divided into one-mark, two-mark and three-mark categories, covering essential topics such as reproductive organs, the menstrual cycle, placenta and early embryonic development. Practising these questions can improve recall and help you write clear, accurate answers.

Kerala Board Plus Two Biology Human Reproduction Important Questions 

These questions focus on key areas of Human Reproduction, including reproductive organs, hormonal changes, fertilisation, implantation and embryonic development. Reviewing the answers will help you recall essential concepts and practise presenting them clearly in the board examination.

Q1. Name the hormone responsible for ovulation.

Answer: Luteinizing Hormone (LH).

Q2. Where does fertilisation normally occur in humans?

Answer: Fertilisation normally occurs in the ampullary region of the fallopian tube.

Q3. What is implantation?

Answer: Implantation is the attachment and embedding of the blastocyst into the uterine endometrium.

Q4. Mention any two functions of the placenta.

Answer:

  1. It supplies oxygen and nutrients to the foetus.

  2. It removes carbon dioxide and metabolic wastes from the foetus.

Q5. Write any two functions of the testes.

Answer:

  1. The testes produce sperms.

  2. They secrete the hormone testosterone.

Kerala Board Plus Two Biology Chapter 1 Important Questions PDF

Revise important Human Reproduction topics such as reproductive organs, hormonal regulation, fertilisation, implantation, placenta and embryonic development. The chapter questions can be practised alongside the Kerala HSE Plus Two Biology syllabus to keep your preparation focused on the prescribed topics.

Human Reproduction Important Questions

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How to Prepare for Kerala Plus Two Biology Chapter 1

Preparing for Human Reproduction becomes easier when you focus on reproductive structures, hormones and the sequence of major biological processes. Follow these steps for effective revision:

  1. Revise reproductive structures: Learn the functions of the male and female reproductive organs and practise their labelled diagrams.

  2. Focus on hormones: Remember the roles of FSH, LH, estrogen and progesterone in the menstrual cycle and reproduction.

  3. Understand reproductive processes: Revise ovulation, fertilisation, implantation and early embryonic development in the correct sequence.

  4. Practise answers according to marks: Prepare precise definitions for one-mark questions and include the required number of points for two-mark and three-mark questions.

  5. Solve model papers: Practise Biology questions with the Kerala Plus Two Biology model paper to improve answer presentation and time management.

  6. Review the examination format: Use the Kerala Plus Two exam pattern to understand the question format and marks distribution, and check the Plus Two grading and marking scheme to understand how marks are awarded.

  7. Plan revision: Use the Kerala Plus Two timetable to organise your Biology revision and practise questions before the examination.

Human Reproduction covers reproductive organs, hormonal control, fertilisation, implantation and early embryonic development. Revising the functions of reproductive structures, roles of hormones and key processes can help strengthen your understanding. Regular practice with mark-wise questions can also improve answer writing for the Kerala Plus Two Biology examination.

 

Kerala Plus Two Biology Chapter 1: Human Reproduction FAQs

Which hormone is responsible for ovulation?

Luteinising hormone (LH) triggers ovulation, leading to the release of the secondary oocyte from the mature ovarian follicle.

Where does fertilisation occur in humans?

Fertilisation normally occurs in the ampullary region of the fallopian tube when a sperm fuses with the female gamete.

What is the difference between a morula and a blastocyst?

A morula is a solid mass of 8–16 blastomeres. A blastocyst develops later and contains an outer trophoblast layer and an inner cell mass.

What is the role of the trophoblast in implantation?

The trophoblast is the outer cell layer of the blastocyst. It attaches to the uterine endometrium and contributes to the formation of the placenta.
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