NCERT Science Class 10 Chapter 14 Our Environment CBSE Board Sample Problems Multiple Choice Question

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Question

Accumulation of non-biodegradable pesticides in the food chain in increasing amount at each higher trophic level is known as:

1. Eutrophication

2. Pollution

3. Bio-magnification

4. Accumulation

In the given food chain, suppose the amount of energy at fourth trophic level 5 kJ, what will be the energy available at the producer level?

Grass – Grasshopper- Frog Snake - Hawk

1. 5 kJ

2. 50 kJ

3. 500 kJ

4. 5000 kJ

Which one of the following is an artificial ecosystem?

1. Pond

2. Crop field

3. Lake

4. Forest

Which of the following is not an example of abiotic factors?

1. Light

2. Plants

3. Heat

4. Temperature

Which of the following are environment-friendly practices?

1. Carrying cloth-bags to put purchases in while shopping

2. Switching off unnecessary lights and fans

3. Walking to school instead of getting your mother to drop you on her scooter

4. All of the above

Which of the following constitute a food-chain?

1. Grass, wheat and mango

2. Grass, goat and human

3. Goat, cow and elephant

4. Grass, fish and goat