Consider the following statements about the structure of a cell: 1. The nucleus is usually spherical and located in the centre of the cell. 2. The cytoplasm is a hard, solid substance between the nucleus and membrane. 3. The cell membrane encloses the cell and regulates movement of substances. Which of the statements given above is/are correct?

The correct option is (c). Explanation A typical cell consists of three major components: the cell membrane (plasma membrane), the cytoplasm, and the nucleus. These structures define the cell's boundary, internal environment, and control center, respectively. Statement-wise Analysis: - Statement 1 is Correct: The nucleus is a prominent organelle that is generally spherical in shape. In a typical animal cell, it is located in the centre of the cell and acts as the control centre for cellular activities. - Statement 2 is Incorrect: The cytoplasm is not a hard or solid substance. It is a jelly-like, semi-fluid substance present between the cell membrane and the nucleus. Various organelles (such as mitochondria and ribosomes) are suspended in the cytoplasm. - Statement 3 is Correct: The cell membrane (or plasma membrane) encloses the cytoplasm and the nucleus. It is porous and selectively permeable, meaning it regulates the movement of specific substances and materials both inward and outward. Key Takeaway: The cytoplasm is a fluid, jelly-like matrix where organelles reside, whereas the cell membrane is a selective barrier that manages transport across the cell boundary.

NCERT Class 7 Science — Chapter 1: Nutrition in plants

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Consider the following statements about the structure of a cell:

The nucleus is usually spherical and located in the centre of the cell.
The cytoplasm is a hard, solid substance between the nucleus and membrane.
The cell membrane encloses the cell and regulates movement of substances.

Which of the statements given above is/are correct?

Official previous-year question

Verified 1 Aug 2026.

Options

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

Did you get this right?

Solution

The correct option is (c).

Explanation

A typical cell consists of three major components: the cell membrane (plasma membrane), the cytoplasm, and the nucleus. These structures define the cell's boundary, internal environment, and control center, respectively.

Statement-wise Analysis:

Statement 1 is Correct: The nucleus is a prominent organelle that is generally spherical in shape. In a typical animal cell, it is located in the centre of the cell and acts as the control centre for cellular activities.
Statement 2 is Incorrect: The cytoplasm is not a hard or solid substance. It is a jelly-like, semi-fluid substance present between the cell membrane and the nucleus. Various organelles (such as mitochondria and ribosomes) are suspended in the cytoplasm.
Statement 3 is Correct: The cell membrane (or plasma membrane) encloses the cytoplasm and the nucleus. It is porous and selectively permeable, meaning it regulates the movement of specific substances and materials both inward and outward.

Key Takeaway:
The cytoplasm is a fluid, jelly-like matrix where organelles reside, whereas the cell membrane is a selective barrier that manages transport across the cell boundary.

Your note

More from Chapter 1: Nutrition in plants

With reference to the mode of nutrition in living organisms, consider the following statements: 1. Autotrophic nutrition is the mode where organisms take in food prepared by others. 2. Animals are classified as heterotrophs. 3. The term ‘heterotrophs’ refers to organisms that depend on others for nourishment. Which of the statements given above are correct?

easy

With reference to the cell structure described in the text, consider the following statements: 1. The cell membrane encloses the cell and controls the movement of substances. 2. The nucleus is a jelly-like substance that fills the entire cell. 3. Cytoplasm is the hard outer covering found only in plant cells. Which of the statements given above is/are correct?

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Consider the following statements about algae: 1. They are generally formed by the growth of organisms in stagnant water. 2. They appear green because they lack chlorophyll. 3. They are autotrophs and can prepare their own food. Which of the statements given above is/are correct?

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Consider the following statements regarding insectivorous plants like the Pitcher plant: 1. They trap insects primarily to obtain carbohydrates. 2. They contain chlorophyll and can perform photosynthesis. 3. The pitcher-like structure is a modified part of the leaf. Which of the statements given above are correct?

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With reference to saprotrophic nutrition, consider the following statements: 1. It is a mode of nutrition where organisms take in nutrients from dead and decaying matter. 2. Fungi ingest dead matter directly without secreting digestive juices. 3. All fungi are harmful and cause spoilage of food and diseases. Which of the statements given above is/are correct?

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The correct option is (c).

Explanation

Statement-wise Analysis:

Statement 1 is Correct: The nucleus is a prominent organelle that is generally spherical in shape. In a typical animal cell, it is located in the centre of the cell and acts as the control centre for cellular activities.
Statement 2 is Incorrect: The cytoplasm is not a hard or solid substance. It is a jelly-like, semi-fluid substance present between the cell membrane and the nucleus. Various organelles (such as mitochondria and ribosomes) are suspended in the cytoplasm.
Statement 3 is Correct: The cell membrane (or plasma membrane) encloses the cytoplasm and the nucleus. It is porous and selectively permeable, meaning it regulates the movement of specific substances and materials both inward and outward.

Key Takeaway:
The cytoplasm is a fluid, jelly-like matrix where organelles reside, whereas the cell membrane is a selective barrier that manages transport across the cell boundary.