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Class 9 Social Science — Chapter 11: Life on Earth

72 practice questions · 24 Easy · 24 Medium · 24 Hard

Practise Class 9 Social Science Chapter 11, "Life on Earth", with 72 NCERT-aligned multiple-choice questions. The set is split into 24 Easy, 24 Medium and 24 Hard questions, so you can warm up on the fundamentals and then push into the exam-level problems that separate top scorers in CBSE Board exams and the JEE & NEET foundation years.

"Life on Earth" is one of the chapters where dates, cause-and-effect reasoning and map/source interpretation really pays off. Each MCQ on this chapter is timed and uses exam-grade marking (+2 correct, −1 wrong, 0 skipped), training the same accuracy-under-pressure that real papers demand. Every question carries a short explanation, so a wrong answer becomes a quick lesson rather than a dead end — the fastest way to close gaps before a test.

Use this chapter as targeted revision: attempt the Easy set first to confirm your basics on Life on Earth, then move to Medium and Hard to test application and problem-solving. Your accuracy, streaks and XP save automatically, and the chapter feeds into your overall Class 9 Social Science mastery score. A few sample questions are shown below; sign in free to practise all 72.

Sample questions

Q1Easy

Project Tiger was launched in India to conserve:

A.Asiatic lions
B.Elephants
C.Tigers✓ correct
D.Rhinoceros
Why

Project Tiger, started in 1973, was launched to protect tigers and their habitats across India.

Q2Medium

Two tigers in the same forest look slightly different in size, colour and stripe pattern. This kind of variety is an example of:

A.Ecosystem diversity
B.Species diversity
C.Genetic diversity✓ correct
D.Climate diversity
Why

Differences among individuals of the same species are due to genetic diversity — variation in genes within a species.

Q3Hard

A wheat crop disease wipes out almost an entire harvest because all the plants were genetically identical. This situation best demonstrates that:

A.Genetic diversity within a species increases the risk of disease
B.Diseases cannot affect crops
C.Low genetic diversity makes a species more vulnerable to being wiped out✓ correct
D.Ecosystem diversity is the only thing that matters
Why

When all individuals are genetically alike, a single disease can destroy them all; genetic diversity provides resistance and resilience.

Life on Earth — FAQs

What does Class 9 Social Science Chapter 11 (Life on Earth) cover on XamBaaz?+

It covers 72 NCERT-aligned MCQs on "Life on Earth" — 24 Easy, 24 Medium and 24 Hard — each with a timed quiz and an instant explanation, suitable for CBSE Board exams and the JEE & NEET foundation years.

Are these "Life on Earth" questions free to practise?+

Yes — sign in with Google to practise "Life on Earth" free. Full unlimited access is ₹999/year (limited-time launch price), with no per-chapter charges.

How should I revise "Life on Earth" for the exam?+

Start with the Easy quiz to confirm your fundamentals, then attempt Medium and Hard for application-level practice. Review each explanation, retry the questions you miss, and track your accuracy on this chapter until it is consistently high.

Practise all 72 questions free

Timed quizzes, instant scoring, streaks and XP. Sign in with Google — no card needed.

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