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Tamil Nadu (TNBSE)Class 10 Science★ 5-8 marks in the TN SSLC Class 10 Science public exam through MCQs, diagrams and short/long answers

Reproduction in Plants and Animals

Samacheer Kalvi (TN State Board) Class 10 Science — Biology Chapter 17, Reproduction in Plants and Animals. Asexual and sexual reproduction in plants (pollination, fertilisation), and human reproduction — the male and female reproductive systems, the menstrual cycle, fertilisation and reproductive health. Notes with diagrams-in-words, common mistakes, practice and quick revision.

⏱ 20 min readMedium difficulty✓ Free · NCERT-aligned

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By the end of this chapter you'll be able to…

1Differentiate asexual and sexual reproduction in plants
2Explain pollination and fertilisation
3Describe the human male and female reproductive systems
4Outline the menstrual cycle
5State aspects of reproductive health

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Why this chapter matters

Reproduction ensures the continuity of life. Pollination, fertilisation and the human reproductive system (with the menstrual cycle) are frequently tested in the TN SSLC exam and build awareness of reproductive health.

Before you start — revise these

A 5-minute refresher here will save you 30 minutes of confusion below.

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Chapter 16 — Plant and Animal Hormones

Hormonal control of reproduction.

Reproduction in Plants and Animals — Class 10 Science (Samacheer Kalvi)

TN State Board (Samacheer Kalvi) Class 10 Science, Biology — Chapter 17. How living things produce new individuals and continue their species.

1. About this chapter

This chapter covers reproduction in plants (asexual and sexual, pollination, fertilisation) and reproduction in humans (reproductive systems, menstrual cycle, fertilisation, reproductive health).

2. Reproduction in plants

Asexual / vegetative propagation: new plants from roots, stems or leaves (e.g., potato, ginger, Bryophyllum) — no gametes.
Sexual reproduction: through flowers. Stamen (anther) makes pollen (male); carpel/pistil (ovary) holds ovules (female).
Pollination: transfer of pollen to the stigma — self-pollination (same flower) or cross-pollination (different flower), by wind, water or insects.
Fertilisation: fusion of male and female gametes → zygote → seed; ovary → fruit.

3. Human reproductive system

Male: testes (produce sperms and testosterone), vas deferens, and associated glands.
Female: ovaries (produce ova and hormones), fallopian tubes, uterus and vagina.

4. Menstrual cycle and fertilisation

The menstrual cycle (~28 days) prepares the uterus for pregnancy; if no fertilisation occurs, the lining is shed (menstruation).
Fertilisation: fusion of sperm and ovum in the fallopian tube → zygote → implants in the uterus → develops into an embryo.

5. Reproductive health

Includes personal hygiene, balanced nutrition, awareness of sexually transmitted infections (STIs), and avoiding substance abuse. Family planning helps responsible parenthood.

6. Common mistakes

Mistake: Calling vegetative propagation a type of sexual reproduction. Fix: It is asexual — no gametes are involved.
Mistake: Confusing pollination with fertilisation. Fix: Pollination is transfer of pollen; fertilisation is fusion of gametes.
Mistake: Saying fertilisation occurs in the uterus. Fix: In humans it occurs in the fallopian tube.

7. Practice (book-back style)

Differentiate asexual and sexual reproduction in plants.
What is pollination? Name its two types.
Where does fertilisation occur in humans?
What is the menstrual cycle?
Mention two aspects of reproductive health.

8. Answer key

Asexual: new plants from vegetative parts, no gametes; sexual: through flowers and fusion of gametes.
Transfer of pollen to the stigma; self-pollination and cross-pollination.
In the fallopian tube.
A roughly 28-day cycle that prepares the uterus for pregnancy; the lining is shed if no fertilisation occurs.
Hygiene and awareness of STIs (also balanced nutrition, avoiding substance abuse).

9. Quick revision

Biology Ch 17 · reproduction in plants and humans.
Plants: asexual (vegetative) vs sexual (flowers, pollination, fertilisation).
Pollination = pollen transfer (self/cross); fertilisation = gamete fusion.
Human: testes (sperm), ovaries (ova); fertilisation in the fallopian tube.
Menstrual cycle ~28 days; reproductive health includes hygiene and STI awareness.

Key formulas & results

Everything you need to memorise, in one card. Screenshot this for revision.

Plant reproduction

asexual (vegetative) / sexual (flowers)

Sexual: pollination then fertilisation.

Pollination vs fertilisation

pollen transfer vs gamete fusion

Self- or cross-pollination.

Human fertilisation site

fallopian tube

Zygote then implants in the uterus.

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Common mistakes & fixes

These are the exact errors that cost students marks in board exams. Read them once, save yourself the trouble.

WATCH OUT

✗ Calling vegetative propagation a type of sexual reproduction

✓ It is asexual — no gametes are involved.

WATCH OUT

✗ Confusing pollination with fertilisation

✓ Pollination is transfer of pollen; fertilisation is fusion of gametes.

WATCH OUT

✗ Saying fertilisation occurs in the uterus

✓ In humans it occurs in the fallopian tube.

NCERT exercises (with solutions)

Every NCERT exercise from this chapter — what it covers and how many questions to expect.

Multiple choice questions

MCQs on pollination, fertilisation and reproductive organs.

Questions

Diagram / short answer

Flower parts, reproductive systems and the menstrual cycle.

Questions

Long answer questions

Sexual reproduction in plants and humans.

Questions

Practice problems

Try each one yourself before tapping "Show solution". Active recall > rereading.

Q1MEDIUM· Comparison

Differentiate asexual and sexual reproduction in plants.

▶ Show solution

Asexual produces new plants from vegetative parts without gametes; sexual occurs through flowers and the fusion of male and female gametes.

Q2EASY· Concept

What is pollination? Name its two types.

▶ Show solution

The transfer of pollen to the stigma; self-pollination and cross-pollination.

Q3EASY· Recall

Where does fertilisation occur in humans?

▶ Show solution

In the fallopian tube.

Q4MEDIUM· Concept

What is the menstrual cycle?

▶ Show solution

A roughly 28-day cycle that prepares the uterus for pregnancy; if no fertilisation occurs, the uterine lining is shed as menstruation.

Q5EASY· Application

Mention two aspects of reproductive health.

▶ Show solution

Personal hygiene and awareness of sexually transmitted infections (also balanced nutrition and avoiding substance abuse).

Q6EASY· Recall

Name the male and female gametes in humans.

▶ Show solution

Sperm (male) and ovum (female).

5-minute revision

The whole chapter, distilled. Read this the night before the exam.

•Biology Chapter 17 of Samacheer Kalvi Class 10 Science.
•Plants: asexual (vegetative) vs sexual (flowers).
•Pollination = pollen transfer (self/cross); fertilisation = gamete fusion.
•Human gametes: sperm (testes) and ovum (ovaries).
•Fertilisation occurs in the fallopian tube; embryo develops in the uterus.
•Menstrual cycle ~28 days; reproductive health includes hygiene and STI awareness.

Tamil Nadu (TNBSE) marks blueprint

Where the marks come from in this chapter — so you can plan your prep.

Typical chapter weightage: 5-8 marks across MCQ, diagram and long-answer questions

Question type	Marks each	Typical count	What it tests
MCQ	1	1-2	Pollination, gametes, organs
Short / Diagram	2-3	1-2	Flower and reproductive systems
Long Answer	3-5	0-1	Reproduction in plants/humans

Prep strategy

Separate pollination and fertilisation clearly
Label flower and human reproductive diagrams
Learn the menstrual cycle outline
Note the fallopian tube as the fertilisation site

Where this shows up in the real world

This chapter isn't just an exam topic — it lives in the world around you.

Horticulture

Vegetative propagation produces identical, fast-growing plants.

Health awareness

Knowledge of reproductive health prevents STIs and supports well-being.

Crop improvement

Controlled pollination helps develop better varieties.

Exam strategy

Battle-tested tips from teachers and toppers for this chapter.

Distinguish pollination and fertilisation in answers
Label reproductive diagrams neatly
State the fertilisation site correctly
Keep reproductive-health points factual and respectful

Going beyond the textbook

For olympiad aspirants and curious learners — topics that build on this chapter.

Compare self- and cross-pollination with examples.
Describe the hormonal control of the menstrual cycle.

Where else this chapter is tested

CBSE board isn't the only one — other exams test this chapter too.

TN SSLC Class 10 Public ExamHigh

Foundation / NTSE BiologyMedium

School unit testsHigh

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Questions students ask

The real ones — pulled from the Q&A community and tutor sessions.

It brings together genes from two different plants, increasing variation and producing healthier, better-adapted offspring.

If the released egg is not fertilised, the thickened uterine lining prepared for pregnancy is shed, which is seen as menstruation.

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