Consider the following statements regarding complex permanent tissues in plants: 1. Xylem is responsible for the transport of food materials from leaves to roots. 2. Phloem transports food from leaves to other parts of the plant. 3. Unlike Xylem, materials in Phloem can move in both directions. Which of the statements given above are correct?

Correct Option The correct option is (c) 2 and 3 only. Explanation Complex permanent tissues in plants, specifically the vascular tissues known as Xylem and Phloem, are responsible for the transport of water, minerals, and organic nutrients throughout the plant body. These tissues constitute the vascular bundles. Statement-wise Analysis - Statement 1 is Incorrect. Xylem is primarily responsible for the conduction of water and minerals from the roots to the stem and leaves. It also provides mechanical strength to the plant parts. It does not transport food materials. - Statement 2 is Correct. Phloem transports food materials, primarily sugars (photosynthates), from the leaves (where they are synthesized) to other parts of the plant for storage or consumption. - Statement 3 is Correct. The transport of materials in the Xylem is essentially unidirectional (from roots upwards to the leaves). In contrast, transport in the Phloem is bidirectional; food can move upwards or downwards depending on the plant's needs (from source to sink). Key Takeaway Xylem transports water and minerals unidirectionally (roots to leaves), whereas Phloem transports organic food materials bidirectionally (source to sink).

Consider the following statements regarding complex permanent… - NCERT Class 9 Science MCQ

NCERT Class 9 Science — Chapter 2: Tissues

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Consider the following statements regarding complex permanent tissues in plants:

Xylem is responsible for the transport of food materials from leaves to roots.
Phloem transports food from leaves to other parts of the plant.
Unlike Xylem, materials in Phloem can move in both directions.

Which of the statements given above are correct?

NCERT textbook question

From NCERT Science - class 9 · Page 64

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

Complex permanent tissues in plants, specifically the vascular tissues known as Xylem and Phloem, are responsible for the transport of water, minerals, and organic nutrients throughout the plant body. These tissues constitute the vascular bundles.

Statement-wise Analysis

Statement 1 is Incorrect. Xylem is primarily responsible for the conduction of water and minerals from the roots to the stem and leaves. It also provides mechanical strength to the plant parts. It does not transport food materials.
Statement 2 is Correct. Phloem transports food materials, primarily sugars (photosynthates), from the leaves (where they are synthesized) to other parts of the plant for storage or consumption.
Statement 3 is Correct. The transport of materials in the Xylem is essentially unidirectional (from roots upwards to the leaves). In contrast, transport in the Phloem is bidirectional; food can move upwards or downwards depending on the plant's needs (from source to sink).

Key Takeaway

Xylem transports water and minerals unidirectionally (roots to leaves), whereas Phloem transports organic food materials bidirectionally (source to sink).

Your note

More from Chapter 2: Tissues

Consider the following statements regarding 'Complex Permanent Tissues': 1. They are made of more than one type of cell. 2. Each cell in the tissue functions independently without coordination. 3. Xylem and Phloem are examples of complex tissues. Which of the statements given above is/are correct?

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Consider the following statements about epithelial tissue: 1. It forms a barrier to keep different body systems separate. 2. It is directly connected to the underlying tissue without any separating membrane. 3. It contains large intercellular spaces to facilitate the movement of materials. Which of the statements given above is/are correct?

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Consider the following statements about 'Smooth Muscles': 1. They are also known as striated muscles. 2. They control involuntary movements like the movement of food in the alimentary canal. 3. They are multinucleate. Which of the statements given above are correct?

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With reference to the fundamental differences between plants and animals, consider the following statements: 1. Plants have a large quantity of supportive tissue which generally consists of dead cells. 2. Growth in plants is uniform throughout the body, whereas in animals it is limited to specific regions. 3. Animals consume more energy compared to plants due to active locomotion. Which of the statements given above is/are correct?

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Which one of the following is the most appropriate reason for the skin being made of 'Stratified Squamous Epithelium'?

easy

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