Our Home: Earth, a Unique Life Sustaining Planet MCQ: 8th Science Chapter 13

Boost your CBSE exam preparation with our Class 8 Science Chapter 13 – Our Home: Earth, a Unique Life Sustaining Planet MCQ Test. This free online quiz is crafted from NCERT textbooks, CBSE syllabus, educational videos, and Vidyalite’s Flashcards to help you master concepts about Earth’s structure, atmosphere, hydrosphere, biosphere, and its role in sustaining life. Ideal for students who want quick revision and strong conceptual understanding before exams.

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Time: 10 Minutes for 10 Question.

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8th Science: Our Home: Earth, a Unique Life Sustaining Planet

1 / 10

1. Why is Venus hotter than Mercury, even though Mercury is closer to the Sun?

Venus rotates faster

Venus reflects more sunlight

Venus has volcanoes

Venus has a thick CO₂ atmosphere

2 / 10

2. In sexual reproduction, what combines to form a zygote?

Stems and roots

Pollen and ovule

Male and female gametes

Egg and leaves

3 / 10

3. What is the ozone layer’s primary role?

Produces rainfall

Warms Earth’s surface

Blocks harmful UV rays

Increases CO₂ levels

4 / 10

4. What is one function of water in animals?

Helps respiration only

Regulates body temperature

Helps produce sound

Forms blood cells

5 / 10

5. What are the three major threats to life on Earth called?

Planetary issues

Triple nature crisis

Global imbalance trio

Triple planetary crisis

6 / 10

6. What is the ‘Goldilocks zone’?

A region rich in gold

A place with the most oxygen

Zone with balanced magnetic field

Distance from star where water remains liquid

7 / 10

7. What is vegetative propagation?

Animal mating

Pollination by insects

Plant reproduction using leaves or stems

Germination of seeds

8 / 10

8. What allows water to exist in liquid form on Earth?

Its moon's presence

Its tilted axis

Its distance from the Sun

Its magnetic field

9 / 10

9. What is the Earth's crust compared to in size relative to the planet?

A watermelon slice

The shell of a nut

The skin of an apple

A leaf

10 / 10

10. Which planet in our solar system has no atmosphere?

Earth

Mercury

Mars

Venus

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