Class 10 Practice Level 3 – Our Environment – Set – 2

Total questions: 15

Which process in the carbon cycle involves the conversion of organic matter into fossil fuels over millions of years?

Topic: Carbon Cycle

Photosynthesis

Respiration

Combustion

Sedimentation

None

What is an ecological niche

Topic: Ecological Niches

The physical location where an organism lives.

The role and position an organism has in its environment, including its interactions with other organisms.

The number of individuals in a population.

The genetic diversity within a species.

None

Which of the following human activities has the most significant impact on increasing atmospheric carbon dioxide levels?

Topic: Human Impact on Ecosystems

Planting trees

Using public transportation

Burning fossil fuels

Recycling

None

What is a major consequence of biodiversity loss in an ecosystem?

Topic: Biodiversity Loss

Increased ecosystem stability

Enhanced ecosystem productivity

Reduced resilience to environmental changes

Greater availability of resources

None

Which of the following pollutants is primarily responsible for acid rain?

Topic: Pollutants

Carbon dioxide

Methane

Sulphur dioxide

Ozone

None

Which conservation strategy focuses on protecting entire ecosystems rather than individual species?

Topic: Carbon Sequestration

Captive breeding

Habitat conservation

Genetic engineering

Wildlife trade regulation

None

Which of the following is an example of an adaptation strategy to cope with rising sea levels?

Topic: Climate Change Adaptation

Increasing greenhouse gas emissions

Building seawalls and levees

Deforestation

Using fossil fuels

None

Which of the following is a secondary consumer in a food chain?

Topic: Primary and Secondary Consumers

Grass

Rabbit

Snake

Deer

None

How does the removal of a top predator from an ecosystem typically affect the population of herbivores?

Topic: Ecosystem Interdependence

It decreases the herbivore population.

It increases the herbivore population.

It has no effect on the herbivore population.

It causes the herbivore population to fluctuate randomly.

None

10.

Which of the following gases has the highest global warming potential (GWP)?

Topic: Greenhouse Effect

Carbon dioxide

Methane

Nitrous oxide

Water vapor

None

11.

What is the primary goal of habitat restoration?

Topic: Habitat Restoration

To introduce new species into an ecosystem

To increase the population of invasive species

To return a degraded ecosystem to its natural state

To convert natural areas into urban developments

None

12.

Which agricultural practice is considered sustainable?

Topic: Sustainable Practices

Monoculture

Slash-and-burn agriculture

Crop rotation

Overgrazing

None

13.

What is a major consequence of deforestation in tropical rainforests?

Topic: Deforestation Consequences

Increased biodiversity

Enhanced soil fertility

Disruption of the water cycle

Reduced carbon dioxide levels

None

14.

How does overfishing affect marine ecosystems?

Topic: Overfishing

It increases the population of fish species.

It enhances the resilience of marine ecosystems.

It leads to the depletion of fish stocks and disrupts marine food webs.

It has no significant impact on marine ecosystems.

None

15.

What is the primary source of nutrient pollution in aquatic ecosystems?

Topic: Water Pollution

Industrial emissions

Agricultural runoff

Deforestation

Urban development

None

1 out of 15

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Class 10 Practice Level 3 – Our Environment – Set – 2

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