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Tamil Nadu (TNBSE)Class 6 Science★ 6-10 marks in the TN Class 6 Term 1 exam through book-back MCQs, true/false and short answers

The World of Animals

Samacheer Kalvi (TN State Board) Class 6 Science — Term 1 Chapter 5, The World of Animals. How animals are adapted to their habitats (aquatic, desert, aerial, forest and snowy regions), the camel as the ship of the desert, migration and aestivation, and bird sanctuaries like Vedanthangal, with the actual book-back questions, common mistakes and quick revision.

⏱ 14 min readEasy difficulty✓ Free · NCERT-aligned

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Study Guide

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

1Define adaptation
2Describe adaptations of aquatic, desert and aerial animals
3Explain why the camel suits the desert
4Differentiate migration and aestivation
5Recall a bird sanctuary

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Why this chapter matters

The World of Animals shows how animals are adapted to survive in different habitats. Adaptation, the camel, migration and aestivation are directly tested book-back content in the TN Class 6 Term 1 exam.

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Class 5 — Animals and Habitats

Where animals live.

The World of Animals — Class 6 Science (Samacheer Kalvi)

TN State Board (Samacheer Kalvi) Class 6 Science, Term 1 — Chapter 5. How animals are adapted to where they live.

1. About this chapter

This chapter covers adaptation in animals of different habitats, migration, aestivation, and the protection of animals (sanctuaries).

2. Adaptation

Adaptation is a special feature or behaviour that helps an animal survive in its habitat.
Aquatic animals: a fish has fins for swimming and gills to breathe in water (fish : water :: elephant : land).
Desert animals: the camel is called the "ship of the desert" — it can live for many days without drinking water and passes only a small amount of urine to save water.
Aerial animals: birds have wings and hollow, light bones for flight.
Snowy-region animals have thick fur to keep warm.

3. Migration and aestivation

Migration is the movement of animals to a different place due to seasonal change (e.g. birds flying to a warmer place in winter).
Aestivation is spending a hot, dry period in an inactive state (a kind of summer sleep).

4. Protecting animals

Sanctuaries protect wildlife. Vedanthangal (in Tamil Nadu) is a famous bird sanctuary.

5. Worked examples

Example 1. Why is the camel called the ship of the desert? Because it can travel long distances in the desert without water.

Example 2. What is migration? The movement of animals to another place due to seasonal change.

Example 3. What is Vedanthangal? A bird sanctuary in Tamil Nadu.

6. Book-back questions (Samacheer Kalvi)

I. Choose the correct answer

Vedanthangal is a — (a) zoo / (b) bird sanctuary. Ans: (b) bird sanctuary.
The movement of animals to a different place due to seasonal change is called — (a) migration / (b) hibernation. Ans: (a) migration.
The animal that can live many days without drinking water is the — (a) fish / (b) camel. Ans: (b) camel.

II. Fill in the blanks 4. Fish : water :: elephant : land. 5. A fish has fins for swimming. 6. The camel is called the ship of the desert.

III. True or False 7. The movement of animals to different places due to seasonal change is called adaptation. — False (it is migration). 8. Spending the hot and dry period in an inactive state is known as aestivation. — True.

IV. Answer briefly 9. How is a camel adapted to the desert? — It can go long without water and passes little urine, with long legs and padded feet for the sand. 10. What is aestivation? — Spending a hot, dry period in an inactive (resting) state.

7. Common mistakes

Mistake: Calling seasonal movement "adaptation". Fix: Seasonal movement to another place is migration.
Mistake: Confusing aestivation and hibernation. Fix: Aestivation is rest in the hot/dry season; hibernation is rest in winter.
Mistake: Thinking all animals breathe the same way. Fix: Each habitat needs special adaptations (fins/gills in water, wings in air).

8. Quick revision

Term 1 · Ch 5 · the world of animals.
Adaptation = features for survival; fish (fins, water), camel ("ship of the desert", saves water), birds (wings, hollow bones).
Migration = seasonal movement to another place; aestivation = inactive state in the hot/dry period.
Vedanthangal is a bird sanctuary in Tamil Nadu.

Key formulas & results

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

Adaptation

features that help survival in a habitat

Fins, wings, thick fur.

Camel

ship of the desert; saves water (little urine)

Lives days without water.

Migration

seasonal movement to another place

Birds in winter.

Aestivation

inactive state in the hot/dry period

Summer rest.

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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 seasonal movement 'adaptation'

✓ Seasonal movement to another place is migration.

WATCH OUT

✗ Confusing aestivation and hibernation

✓ Aestivation is rest in the hot/dry season; hibernation is rest in winter.

WATCH OUT

✗ Thinking all animals breathe the same way

✓ Each habitat needs special adaptations (fins/gills in water, wings in air).

NCERT exercises (with solutions)

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

Choose the correct answer

Book-back MCQs on Vedanthangal, migration and the camel.

Questions

Fill in the blanks

Elephant-land, fish fins and ship of the desert.

Questions

True or False / Answer briefly

Migration, aestivation and camel adaptation.

Questions

Practice problems

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

Q1EASY· MCQ

Vedanthangal is a ____.

▶ Show solution

bird sanctuary.

Q2EASY· MCQ

The animal that can live many days without drinking water is the ____.

▶ Show solution

camel.

Q3EASY· Fill in the blanks

Fish : water :: elephant : ____.

▶ Show solution

land.

Q4EASY· True/False

True or False: Seasonal movement of animals to another place is called adaptation.

▶ Show solution

False — it is called migration.

Q5EASY· True/False

True or False: Spending the hot, dry period in an inactive state is aestivation.

▶ Show solution

True.

Q6MEDIUM· Answer briefly

How is the camel adapted to live in the desert?

▶ Show solution

The camel can go many days without water and passes only a little urine to save water; its long legs and padded feet help it walk on hot sand, so it is called the ship of the desert.

5-minute revision

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

•Term 1 Chapter 5 of Samacheer Kalvi Class 6 Science.
•Adaptation is a feature or behaviour that helps an animal survive in its habitat.
•A fish has fins and gills for water; the camel saves water and is the ship of the desert.
•Birds have wings and hollow bones for flight; snowy-region animals have thick fur.
•Migration is seasonal movement to another place; aestivation is rest in the hot/dry period.
•Vedanthangal is a famous bird sanctuary in Tamil Nadu.

Tamil Nadu (TNBSE) marks blueprint

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

Typical chapter weightage: 6-10 marks across book-back MCQ, true/false and short answers

Question type	Marks each	Typical count	What it tests
MCQ / Fill	1	4-6	Adaptation, camel, migration
True / False	1	1-2	Migration and aestivation
Short Answer	2	1-2	Camel adaptation, aestivation

Prep strategy

Match each animal to its adaptation
Remember camel = ship of the desert
Separate migration and aestivation
Recall Vedanthangal as a bird sanctuary

Where this shows up in the real world

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

Conservation

Understanding adaptation helps protect wildlife.

Sanctuaries

Places like Vedanthangal protect migratory birds.

Biology

Adaptation explains the variety of life on Earth.

Exam strategy

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

Pair each animal with its adaptation
Quote 'ship of the desert' for the camel
Distinguish migration and aestivation
Name Vedanthangal as a bird sanctuary

Going beyond the textbook

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

Describe three adaptations of a polar bear to the snow.
Explain how a fish's body shape helps it move in water.

Where else this chapter is tested

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

TN Class 6 Term 1 ExamHigh

NMMS / Foundation ScienceMedium

School unit testsHigh

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Questions students ask

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

When the season changes and food or warmth becomes scarce, birds fly long distances to a place with a better climate and more food, returning when conditions improve — this seasonal movement is migration.

Aestivation is an inactive resting state during a hot, dry period (summer), while hibernation is a similar resting state during the cold of winter.

Practice more, ask doubts, find a tutor

Tamil Nadu (TNBSE) Class 6 mock tests

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