With reference to 'Cartilage', consider the following statements: 1. It consists of cells packed tightly without any intercellular spaces. 2. Its solid matrix is composed of proteins and sugars. 3. It is found exclusively in the spinal cord. Which of the statements given above are correct?

With reference to 'Cartilage', consider the… - NCERT Class 9 Science MCQ

NCERT Class 9 Science — Chapter 2: Tissues

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With reference to 'Cartilage', consider the following statements:

It consists of cells packed tightly without any intercellular spaces.
Its solid matrix is composed of proteins and sugars.
It is found exclusively in the spinal cord.

Which of the statements given above are correct?

NCERT textbook question

From NCERT Science - class 9 · Page 67

Options

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

Did you get this right?

Solution

The correct option is (b) 2 only.

Explanation

Cartilage is a specialized form of connective tissue. Unlike epithelial tissue, connective tissues are characterized by an abundance of extracellular matrix separating the cells.

Statement 1 is Incorrect: Cartilage does not consist of tightly packed cells. The cells of cartilage, known as chondrocytes, are enclosed in small cavities (lacunae) and are widely spaced within the matrix. Tightly packed cells without intercellular spaces are a characteristic of epithelial tissue.

Statement 2 is Correct: The intercellular material (matrix) of cartilage is solid, pliable, and resists compression. This matrix is chemically composed of proteins (such as collagen) and sugars (specifically chondroitin sulfate).

Statement 3 is Incorrect: Cartilage is not found exclusively in the spinal cord. In fact, the spinal cord consists of nervous tissue. Cartilage is found in the tip of the nose, outer ear joints, between adjacent bones of the vertebral column (intervertebral discs), and in the limbs and hands of adults.

Key Takeaway: Cartilage is a connective tissue with a solid matrix of proteins and sugars, containing scattered chondrocytes, and is located in the nose, ear, and joints, not the spinal cord.

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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