12th Biology Ecology Quiz Online MCQ free test for 2026 exam

12th Biology Ecology Quiz Online MCQ free test for 2026 exam

Are you student of 12th Biology grade or preparing any competitive exam based on 12th standard? If yes! Participate in 12th Biology Ecology Quiz for Check knowledge with instant result. Subscribe our YouTube Channel youtube.com/@QuizRanker and Study MCQ 12th Biology Quiz with question answer for better marks.

Ecology MCQ Test Quiz

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Time: 10 Minutes for 10 Question.

12th Biology: Ecology

1 / 10

1. Plants produce toxins as a defense against:

2 / 10

2. Resource partitioning that enables species coexistence involves:

3 / 10

3. An age pyramid with a triangular shape indicates:

4 / 10

4. Which interaction results in one species negatively affecting another?

5 / 10

5. An orchid growing on a mango tree branch is an example of:

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6. Brood parasitism in birds involves:

7 / 10

7. Age pyramids with a broad base indicate:

8 / 10

8. Population density refers to:

9 / 10

9. A community differs from a population in having:

10 / 10

10. An example of parasitism is:

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Pankaj Karn

I’m a dedicated biology teacher specializing in online education and academic writing. Currently, I contribute to QuizRanker.in, where I create engaging and informative biology content. With an MSc degree in hand, I’m passionate about making complex biological concepts accessible and exciting for students everywhere.

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