Consider the following statements regarding meristematic tissues in plants: 1. They are composed of cells that have lost the ability to divide. 2. The cells of this tissue have dense cytoplasm and prominent nuclei. 3. These cells generally lack vacuoles. Which of the statements given above is/are correct?

The correct option is (c). Explanation Meristematic tissues consist of actively dividing cells responsible for growth in plants. These cells have not yet differentiated into specialized forms and retain the capacity for continuous cell division. - Statement 1 is Incorrect: Meristematic tissues are composed of immature cells that possess the ability to divide continuously. It is the permanent tissues (like parenchyma, collenchyma, and sclerenchyma) that are formed from meristems and have lost the ability to divide. - Statement 2 is Correct: Cells of meristematic tissue are metabolically highly active. To support rapid division and growth, they possess dense cytoplasm and a large, prominent nucleus. They typically have thin cellulose walls. - Statement 3 is Correct: Meristematic cells generally lack vacuoles or have very small ones. Vacuoles are primarily responsible for storage and providing turgidity or rigidity to mature cells. Since meristematic cells are constantly dividing and do not store nutrients or waste, large vacuoles are unnecessary and would impede the division process. Key Takeaway: Meristematic tissues are characterized by their ability to divide actively, dense cytoplasm, prominent nuclei, thin cell walls, and the absence of large vacuoles.

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

NCERT Class 9 Science — Chapter 2: Tissues

mcqeasy

Consider the following statements regarding meristematic tissues in plants:

They are composed of cells that have lost the ability to divide.
The cells of this tissue have dense cytoplasm and prominent nuclei.
These cells generally lack vacuoles.

Which of the statements given above is/are correct?

NCERT textbook question

From NCERT Science - class 9 · Page 62

Options

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

Did you get this right?

Solution

The correct option is (c).

Explanation

Meristematic tissues consist of actively dividing cells responsible for growth in plants. These cells have not yet differentiated into specialized forms and retain the capacity for continuous cell division.

Statement 1 is Incorrect: Meristematic tissues are composed of immature cells that possess the ability to divide continuously. It is the permanent tissues (like parenchyma, collenchyma, and sclerenchyma) that are formed from meristems and have lost the ability to divide.
Statement 2 is Correct: Cells of meristematic tissue are metabolically highly active. To support rapid division and growth, they possess dense cytoplasm and a large, prominent nucleus. They typically have thin cellulose walls.
Statement 3 is Correct: Meristematic cells generally lack vacuoles or have very small ones. Vacuoles are primarily responsible for storage and providing turgidity or rigidity to mature cells. Since meristematic cells are constantly dividing and do not store nutrients or waste, large vacuoles are unnecessary and would impede the division process.

Key Takeaway: Meristematic tissues are characterized by their ability to divide actively, dense cytoplasm, prominent nuclei, thin cell walls, and the absence of large vacuoles.

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?

medium

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

easy

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