Consider the following statements about 'Sclerenchyma': 1. It is the tissue that makes the plant hard and stiff. 2. The cells have thin walls made of cellulose. 3. It is present in the hard covering of seeds and nuts. Which of the statements given above is/are correct?

Correct Option The correct option is (c). Explanation Sclerenchyma is a type of simple permanent tissue in plants. Unlike parenchyma and collenchyma, sclerenchyma cells are typically dead at maturity and are specialized for providing mechanical support and structural integrity to the plant. Statement-wise Analysis - Statement 1 is Correct: Sclerenchyma is the main mechanical tissue in plants. Its primary function is to provide mechanical strength, making the plant parts hard and stiff to withstand various environmental stresses. - Statement 2 is Incorrect: The cells of sclerenchyma do not have thin walls made of cellulose. Instead, they possess long, narrow cells with thick and lignified cell walls. Lignin acts as a cementing material that hardens the cell wall. Thin walls made of cellulose are a characteristic of parenchyma tissue. - Statement 3 is Correct: Sclerenchyma is widely distributed in plant bodies. It is found in stems (around vascular bundles), in the veins of leaves, and in the hard covering of seeds and nuts. For example, the husk of a coconut is made of sclerenchymatous tissue. Key Takeaway Sclerenchyma consists of dead cells with thick, lignified walls and provides mechanical strength and hardness to plant parts, such as seed coats and nut shells.

Consider the following statements about 'Sclerenchyma': 1. It… - NCERT Class 9 Science MCQ

NCERT Class 9 Science — Chapter 2: Tissues

mcqmedium

Consider the following statements about 'Sclerenchyma':

It is the tissue that makes the plant hard and stiff.
The cells have thin walls made of cellulose.
It is present in the hard covering of seeds and nuts.

Which of the statements given above is/are correct?

NCERT textbook question

From NCERT Science - class 9 · Page 63

Options

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

Did you get this right?

Solution

Correct Option

The correct option is (c).

Explanation

Sclerenchyma is a type of simple permanent tissue in plants. Unlike parenchyma and collenchyma, sclerenchyma cells are typically dead at maturity and are specialized for providing mechanical support and structural integrity to the plant.

Statement-wise Analysis

Statement 1 is Correct: Sclerenchyma is the main mechanical tissue in plants. Its primary function is to provide mechanical strength, making the plant parts hard and stiff to withstand various environmental stresses.
Statement 2 is Incorrect: The cells of sclerenchyma do not have thin walls made of cellulose. Instead, they possess long, narrow cells with thick and lignified cell walls. Lignin acts as a cementing material that hardens the cell wall. Thin walls made of cellulose are a characteristic of parenchyma tissue.
Statement 3 is Correct: Sclerenchyma is widely distributed in plant bodies. It is found in stems (around vascular bundles), in the veins of leaves, and in the hard covering of seeds and nuts. For example, the husk of a coconut is made of sclerenchymatous tissue.

Key Takeaway

Sclerenchyma consists of dead cells with thick, lignified walls and provides mechanical strength and hardness to plant parts, such as seed coats and nut shells.

Your note

More from Chapter 2: Tissues

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