(D) Lichens are highly sensitive to air pollutants,especially sulfur dioxide $(SO_2)$. They do not grow in polluted areas,making them excellent bio-in

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(D) Lichens are highly sensitive to air pollutants,especially sulfur dioxide $(SO_2)$. They do not grow in polluted areas,making them excellent bio-indicators of air pollution. Therefore,their presence or absence indicates the level of air quality in a given habitat.

Class 11 Biology Biological Classification Viruses, Viroids, Prions and Lichens

Easy

Lichens indicate ........ in the habitat.

A
Zinc in soil
B
Copper in soil
C
Carbon monoxide in air
D
Air pollution

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Class 11

Biology Questions

Chapter

Biological Classification

Subtopic

Viruses, Viroids, Prions and Lichens

Assertion : $TMV$ is a virus which causes mosaic disease.
Reason : $TMV$ has $RNA$ as genetic material.

MediumAIPMT 2001

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Which infectious agents are smaller than viruses?

Easy

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Assertion $(A)$: The pathogen responsible for Parkinson's disease in humans is viroids.
Reason $(R)$: Viroids are smaller in size than viruses.

Medium

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$S$: Viruses can pass through bacteria-proof filters.
$R$: Viruses are extremely small in size.

Medium

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Which of the following is called a "filterable agent"?

Medium

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Lichens indicate ........ in the habitat.

Similar Questions

Assertion : $TMV$ is a virus which causes mosaic disease.Reason : $TMV$ has $RNA$ as genetic material.

Which infectious agents are smaller than viruses?

Assertion $(A)$: The pathogen responsible for Parkinson's disease in humans is viroids.Reason $(R)$: Viroids are smaller in size than viruses.

$S$: Viruses can pass through bacteria-proof filters.$R$: Viruses are extremely small in size.

Which of the following is called a "filterable agent"?

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Assertion : $TMV$ is a virus which causes mosaic disease.
Reason : $TMV$ has $RNA$ as genetic material.

Assertion $(A)$: The pathogen responsible for Parkinson's disease in humans is viroids.
Reason $(R)$: Viroids are smaller in size than viruses.

$S$: Viruses can pass through bacteria-proof filters.
$R$: Viruses are extremely small in size.