Consider the following statements about the function of leaves: 1. Leaves absorb a significant amount of water from the atmosphere through transpiration. 2. Leaves contain tiny pores called stomata for gaseous exchange. 3. Leaves are the primary site for food production in plants. Which of the statements given above are correct?

Correct Option The correct option is (c) 2 and 3 only. Explanation Leaves are the primary lateral appendages of the stem, specialized for photosynthesis. Their physiological functions include the synthesis of organic food, gas exchange, and the regulation of water movement through transpiration. Statement-wise Analysis - Statement 1 is Incorrect: Transpiration is the process of water loss in the form of water vapor from the aerial parts of the plant, primarily the leaves. Plants do not absorb a significant amount of water from the atmosphere through leaves; instead, water absorption is the primary function of the root system (specifically root hairs) from the soil. - Statement 2 is Correct: The surface of leaves, particularly the underside in dicots, contains numerous microscopic pores known as stomata. These pores are guarded by specialized cells called guard cells and are responsible for the exchange of gases (oxygen and carbon dioxide) between the plant and the atmosphere. - Statement 3 is Correct: Leaves are the primary site of photosynthesis, the process by which plants synthesize food (glucose) using sunlight, carbon dioxide, and water. This occurs in the mesophyll cells which are rich in chloroplasts containing the pigment chlorophyll. Key Takeaway: Roots are responsible for water absorption, while leaves function as the site for transpiration (water loss), gas exchange (via stomata), and photosynthesis (food production).

NCERT Class 6 Science — Chapter 3: Getting to know plants

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Consider the following statements about the function of leaves:

Leaves absorb a significant amount of water from the atmosphere through transpiration.
Leaves contain tiny pores called stomata for gaseous exchange.
Leaves are the primary site for food production in plants.

Which of the statements given above are correct?

Official previous-year question

Verified 1 Aug 2026.

Options

A1 and 2 only
B2 only
C2 and 3 only
D1, 2 and 3

Did you get this right?

Solution

Correct Option

The correct option is (c) 2 and 3 only.

Explanation

Leaves are the primary lateral appendages of the stem, specialized for photosynthesis. Their physiological functions include the synthesis of organic food, gas exchange, and the regulation of water movement through transpiration.

Statement-wise Analysis

Statement 1 is Incorrect: Transpiration is the process of water loss in the form of water vapor from the aerial parts of the plant, primarily the leaves. Plants do not absorb a significant amount of water from the atmosphere through leaves; instead, water absorption is the primary function of the root system (specifically root hairs) from the soil.
Statement 2 is Correct: The surface of leaves, particularly the underside in dicots, contains numerous microscopic pores known as stomata. These pores are guarded by specialized cells called guard cells and are responsible for the exchange of gases (oxygen and carbon dioxide) between the plant and the atmosphere.
Statement 3 is Correct: Leaves are the primary site of photosynthesis, the process by which plants synthesize food (glucose) using sunlight, carbon dioxide, and water. This occurs in the mesophyll cells which are rich in chloroplasts containing the pigment chlorophyll.

Key Takeaway: Roots are responsible for water absorption, while leaves function as the site for transpiration (water loss), gas exchange (via stomata), and photosynthesis (food production).

Your note

More from Chapter 3: Getting to know plants

With reference to the structure of a leaf, consider the following statements: 1. The part of the leaf by which it is attached to the stem is called the petiole. 2. The broad, green part of the leaf is called the sepal. 3. All leaves must possess a petiole. Which of the statements given above is/are correct?

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Consider the following statements regarding leaf venation: 1. The design made by veins in a leaf is called leaf venation. 2. If the design is net-like on both sides of the midrib, it is called parallel venation. 3. If the veins are parallel to one another, it is called parallel venation. Which of the statements given above are correct?

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With reference to the process of transpiration in plants, consider the following statements: 1. Plants release water into the air in the form of liquid droplets. 2. This process takes place primarily through the leaves. 3. Transpiration helps in the upward movement of water in the plant. Which of the statements given above are correct?

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With reference to plant morphology, what is the typical relationship between leaf venation and the root system?

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With reference to the root system of plants, consider the following statements: 1. In a taproot system, the main root is called the taproot and smaller roots are called lateral roots. 2. In a fibrous root system, there is one main root from which all other roots originate. 3. Roots play no role in holding the plant to the soil. Which of the statements given above is/are correct?

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Correct Option

The correct option is (c) 2 and 3 only.

Explanation

Statement-wise Analysis

Statement 1 is Incorrect: Transpiration is the process of water loss in the form of water vapor from the aerial parts of the plant, primarily the leaves. Plants do not absorb a significant amount of water from the atmosphere through leaves; instead, water absorption is the primary function of the root system (specifically root hairs) from the soil.
Statement 2 is Correct: The surface of leaves, particularly the underside in dicots, contains numerous microscopic pores known as stomata. These pores are guarded by specialized cells called guard cells and are responsible for the exchange of gases (oxygen and carbon dioxide) between the plant and the atmosphere.
Statement 3 is Correct: Leaves are the primary site of photosynthesis, the process by which plants synthesize food (glucose) using sunlight, carbon dioxide, and water. This occurs in the mesophyll cells which are rich in chloroplasts containing the pigment chlorophyll.

Key Takeaway: Roots are responsible for water absorption, while leaves function as the site for transpiration (water loss), gas exchange (via stomata), and photosynthesis (food production).