What is bioaccumulation?

The process by which organisms break down substances.

The process by which organisms eliminate toxins.

The process by which organisms absorb and store toxins faster than they can eliminate them.

The process by which organisms produce energy from food.

Which of the following best describes a food chain?

A group of organisms living in the same habitat.

A linear sequence of organisms through which nutrients and energy pass.

A complex network of interconnected food webs.

The physical location where an organism lives.

Why are top predators often most affected by bioaccumulation?

They are exposed to more sunlight.

They are at the end of the food chain and accumulate toxins from all the lower levels.

They eat a variety of different organisms.

What is the main difference between bioaccumulation and biomagnification?

Bioaccumulation occurs within an individual, while biomagnification occurs across trophic levels.

Bioaccumulation occurs in plants, while biomagnification occurs in animals.

Bioaccumulation happens in water, while biomagnification happens on land.

Bioaccumulation reduces toxin levels, while biomagnification increases them.

In a food chain, what role do producers play?

They produce energy from sunlight.

They consume primary consumers.

How can bioaccumulation affect human health?

By increasing oxygen levels in the blood.

By causing a buildup of essential nutrients.

By leading to the accumulation of harmful toxins in the body.

By promoting healthy growth and development.

Which of the following is a common effect of biomagnification in aquatic ecosystems?

Decreased sunlight penetration.

Higher toxin concentrations in top predators.

What is the primary source of toxins that lead to bioaccumulation in ecosystems?

Human activities, such as industrial pollution.

Ecosystems Free MCQ Practice Test with Solutions

Important Questions for Ecosystems

Find all the important questions for Ecosystems at EduRev.Get fully prepared for Ecosystems with EduRev's comprehensive question bank and test resources. Our platform offers a diverse range of question papers covering various topics within the Ecosystems syllabus. Whether you need to review specific subjects or assess your overall readiness, EduRev has you covered. The questions are designed to challenge you and help you gain confidence in tackling the actual exam. Maximize your chances of success by utilizing EduRev's extensive collection of Ecosystems resources.

Ecosystems MCQs with Answers

Prepare for the Ecosystems within the Year 8 exam with comprehensive MCQs and answers at EduRev. Our platform offers a wide range of practice papers, question papers, and mock tests to familiarize you with the exam pattern and syllabus. Access the best books, study materials, and notes curated by toppers to enhance your preparation. Stay updated with the exam date and receive expert preparation tips and paper analysis. Visit EduRev's official website today and access a wealth of videos and coaching resources to excel in your exam.

Online Tests for Ecosystems

Practice with a wide array of question papers that follow the exam pattern and syllabus. Our platform offers a user-friendly interface, allowing you to track your progress and identify areas for improvement. Access detailed solutions and explanations for each test to enhance your understanding of concepts. With EduRev's Online Tests, you can build confidence, boost your performance, and ace Ecosystems with ease. Join thousands of successful students who have benefited from our trusted online resources.

Education Revolution