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Chapter 13 of 13
Practice Quiz

Our Environment

Gujarat Board · Class 10 · Science

Practice quiz for Our Environment — Gujarat Board Class 10 Science. MCQs and questions with answers to test your preparation.

43 questions20 flashcards5 concepts

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Quick Quiz: Our Environment

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1

What is an ecosystem?

2

In a food chain: Grass → Goat → Lion, which organism is the secondary consumer?

3

What percentage of energy is typically transferred from one trophic level to the next?

4

Ozone in the upper atmosphere protects us from which type of radiation?

43 Questions·
multiple choicemultiple correct

Sample Questions

1multiple correct

Which of the following are examples of producers in an ecosystem?

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Green plants, Algae, Bacteria that can photosynthesize

Producers are organisms that can make their own food using sunlight through photosynthesis. Green plants, algae, and photosynthetic bacteria all have chlorophyll and can produce organic compounds from inorganic substances using solar energy.

2multiple correct

Which of the following statements about decomposers are correct?

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They break down dead organisms, They include bacteria and fungi, They recycle nutrients back to soil

Decomposers like bacteria and fungi break down dead remains and waste products of organisms, converting complex organic substances into simple inorganic substances that enrich the soil. They do not produce their own food or act as primary consumers.

3multiple correct

Which of these materials are biodegradable?

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Vegetable peels, Paper, Cotton cloth

Biodegradable substances are those that can be broken down by biological processes (bacteria and other microorganisms). Vegetable peels, paper, and cotton are natural materials that decompose easily. Plastic and glass are non-biodegradable.

4multiple choice

What is biological magnification?

Show answer

Accumulation of harmful chemicals at each trophic level

Biological magnification is the progressive accumulation of non-degradable harmful chemicals like pesticides at each trophic level. Since these chemicals cannot be broken down, their concentration increases as we move up the food chain.

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Frequently Asked Questions

What are the important topics in Our Environment for Gujarat Board Class 10 Science?
Our Environment covers several key topics that are frequently asked in Gujarat Board Class 10 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Our Environment — Gujarat Board Class 10 Science?
Understand the core concepts first, then work through the 43 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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