Consider the following statements about the forest environment: 1. The environment is peaceful due to noise absorption. 2. The presence of vegetation causes hot winds to blow in the forest. 3. The forest floor is covered with a layer of dead and decaying matter. Which of the statements given above is/are correct?

The correct option is (c). Explanation Forest ecosystems are characterized by dense vegetation that significantly influences the local microclimate, soil composition, and acoustic environment. These ecosystems maintain distinct physical conditions compared to open terrain. Statement-wise Analysis: - Statement 1 is Correct: Forests act as natural acoustic barriers. The trunks, branches, leaves, and shrubs absorb, deflect, and refract sound waves, significantly reducing noise levels. This attenuation of sound contributes to the relative quietness of the forest environment. - Statement 2 is Incorrect: Vegetation regulates temperature through transpiration and shading, which generally lowers the ambient temperature. Forests typically reduce wind speed and moderate extreme weather conditions rather than generating hot winds. Hot winds are characteristic of arid or open regions lacking significant vegetation cover. - Statement 3 is Correct: The forest floor is typically covered with a layer of organic debris, including fallen leaves, twigs, bark, and other plant material. This layer, known as litter, undergoes decomposition by microorganisms and detritivores, eventually forming humus and recycling nutrients back into the soil. Key Takeaway: Forests function as natural sound absorbers and temperature moderators, while the forest floor serves as a critical site for the decomposition of organic matter and nutrient cycling.

NCERT Class 7 Environment & Ecology — Chapter 1: Forests: our lifeline

mcqeasy

Consider the following statements about the forest environment:

The environment is peaceful due to noise absorption.
The presence of vegetation causes hot winds to blow in the forest.
The forest floor is covered with a layer of dead and decaying matter.

Which of the statements given above is/are correct?

Official previous-year question

Verified 1 Aug 2026.

Options

A1 and 2 only
B2 only
C1 and 3 only
D1, 2 and 3

Did you get this right?

Solution

The correct option is (c).

Explanation

Forest ecosystems are characterized by dense vegetation that significantly influences the local microclimate, soil composition, and acoustic environment. These ecosystems maintain distinct physical conditions compared to open terrain.

Statement-wise Analysis:

Statement 1 is Correct: Forests act as natural acoustic barriers. The trunks, branches, leaves, and shrubs absorb, deflect, and refract sound waves, significantly reducing noise levels. This attenuation of sound contributes to the relative quietness of the forest environment.
Statement 2 is Incorrect: Vegetation regulates temperature through transpiration and shading, which generally lowers the ambient temperature. Forests typically reduce wind speed and moderate extreme weather conditions rather than generating hot winds. Hot winds are characteristic of arid or open regions lacking significant vegetation cover.
Statement 3 is Correct: The forest floor is typically covered with a layer of organic debris, including fallen leaves, twigs, bark, and other plant material. This layer, known as litter, undergoes decomposition by microorganisms and detritivores, eventually forming humus and recycling nutrients back into the soil.

Key Takeaway:
Forests function as natural sound absorbers and temperature moderators, while the forest floor serves as a critical site for the decomposition of organic matter and nutrient cycling.

Your note

More from Chapter 1: Forests: our lifeline

With reference to the structure of a forest, consider the following statements: 1. The branchy part of a tree above the stem is known as the crown. 2. The roof-like structure formed by the branches is called the root system. 3. The forest floor is the only layer found in a forest. Which of the statements given above is/are correct?

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Consider the following statements regarding the vegetation layers in a forest: 1. Giant and tall trees constitute the top layer. 2. Shrubs and tall grasses form the lowest layer of the forest. 3. Herbs form the lowest layer of vegetation in the forest. Which of the statements given above is/are correct?

easy

In a dense forest ecosystem, the forest floor receives minimal sunlight primarily due to:

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With reference to the role of forests in the water cycle, consider the following statements: 1. Trees release water vapour into the air through the process of condensation. 2. The forest canopy intercepts raindrops, preventing them from hitting the ground directly. 3. Forests facilitate the infiltration of water into the ground. Which of the statements given above is/are correct?

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Consider the following statements about the "forest floor": 1. The forest floor is generally dark due to the dense canopy above. 2. The forest floor is completely devoid of any dead or decaying matter. 3. The forest floor is sterile and supports no living organisms. Which of the statements given above is/are correct?

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The correct option is (c).

Explanation

Statement-wise Analysis:

Statement 1 is Correct: Forests act as natural acoustic barriers. The trunks, branches, leaves, and shrubs absorb, deflect, and refract sound waves, significantly reducing noise levels. This attenuation of sound contributes to the relative quietness of the forest environment.
Statement 2 is Incorrect: Vegetation regulates temperature through transpiration and shading, which generally lowers the ambient temperature. Forests typically reduce wind speed and moderate extreme weather conditions rather than generating hot winds. Hot winds are characteristic of arid or open regions lacking significant vegetation cover.
Statement 3 is Correct: The forest floor is typically covered with a layer of organic debris, including fallen leaves, twigs, bark, and other plant material. This layer, known as litter, undergoes decomposition by microorganisms and detritivores, eventually forming humus and recycling nutrients back into the soil.