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Ecosystem Dynamics and Energy Transfer

Ecosystem Dynamics and Energy Transfer

Assessment

Interactive Video

Biology, Science, Geography

6th - 7th Grade

Practice Problem

Hard

Created by

Patricia Brown

FREE Resource

The video discusses the pollution of the Yamuna River, highlighting human activities that contribute to environmental degradation. It explains ecosystems, their components, and types, focusing on biotic and abiotic factors. The lesson covers food chains, trophic levels, and energy flow, emphasizing the 10% law. Biomagnification and food webs are explored, along with human impacts like waste and ozone depletion. The video concludes with a summary of key points.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is one of the main causes of pollution in the Yamuna River?

Natural disasters

Excessive fishing

Industrial waste dumping

Deforestation

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a biotic component of an ecosystem?

Green plants

Temperature

Soil moisture

Sunlight

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary role of producers in an ecosystem?

Consuming other organisms

Providing shelter for animals

Decomposing organic matter

Producing organic compounds from inorganic substances

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a food chain, what is the term for the level where energy transfer occurs?

Energy level

Biotic level

Abiotic level

Trophic level

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

According to the 10% law, how much energy is transferred from one trophic level to the next?

1%

10%

50%

90%

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is biomagnification?

The process of photosynthesis in plants

The decrease in energy transfer at each trophic level

The increase in the number of organisms at each trophic level

The increase in concentration of harmful chemicals at higher trophic levels

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a method of garbage disposal?

Deforestation

Recycling

Overfishing

Mining

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