Consider the following statements regarding Lysosomes: 1. They are formed directly by the mitochondria. 2. They contain digestive enzymes made by the Rough Endoplasmic Reticulum (RER). 3. They are capable of digesting the cell's own organelles if the cell gets damaged. Which of the statements given above is/are correct?

The correct option is (c) 2 and 3 only. Explanation Lysosomes are membrane-bound vesicular structures found in eukaryotic cells. They are an integral part of the endomembrane system and are primarily responsible for intracellular digestion and waste disposal. Statement-wise Analysis - Statement 1 is Incorrect. Lysosomes are not formed by mitochondria. They are formed by the process of packaging in the Golgi apparatus. The Golgi apparatus modifies and packages proteins received from the Endoplasmic Reticulum into vesicles, some of which mature into lysosomes. - Statement 2 is Correct. The isolated lysosomal vesicles are very rich in almost all types of hydrolytic enzymes (hydrolases – lipases, proteases, carbohydrases). These enzymes are synthesized by the Rough Endoplasmic Reticulum (RER) and are subsequently transported to the Golgi apparatus for processing before being packaged into lysosomes. - Statement 3 is Correct. Lysosomes are often referred to as the "suicide bags" of the cell. If the cell gets damaged or during starvation, lysosomes may burst, and the released enzymes digest the cell's own organelles and components. This process is known as autolysis. Key Takeaway: Lysosomes originate from the Golgi apparatus and contain hydrolytic enzymes synthesized by the Rough Endoplasmic Reticulum (RER). They function as the cell's waste disposal system and can trigger autolysis in damaged cells.

NCERT Class 9 Science — Chapter 1: The fundamental unit of life

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Consider the following statements regarding Lysosomes:

They are formed directly by the mitochondria.
They contain digestive enzymes made by the Rough Endoplasmic Reticulum (RER).
They are capable of digesting the cell's own organelles if the cell gets damaged.

Which of the statements given above is/are correct?

Official previous-year question

Verified 1 Aug 2026.

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) 2 and 3 only.

Explanation

Lysosomes are membrane-bound vesicular structures found in eukaryotic cells. They are an integral part of the endomembrane system and are primarily responsible for intracellular digestion and waste disposal.

Statement-wise Analysis

Statement 1 is Incorrect. Lysosomes are not formed by mitochondria. They are formed by the process of packaging in the Golgi apparatus. The Golgi apparatus modifies and packages proteins received from the Endoplasmic Reticulum into vesicles, some of which mature into lysosomes.
Statement 2 is Correct. The isolated lysosomal vesicles are very rich in almost all types of hydrolytic enzymes (hydrolases – lipases, proteases, carbohydrases). These enzymes are synthesized by the Rough Endoplasmic Reticulum (RER) and are subsequently transported to the Golgi apparatus for processing before being packaged into lysosomes.
Statement 3 is Correct. Lysosomes are often referred to as the "suicide bags" of the cell. If the cell gets damaged or during starvation, lysosomes may burst, and the released enzymes digest the cell's own organelles and components. This process is known as autolysis.

Key Takeaway: Lysosomes originate from the Golgi apparatus and contain hydrolytic enzymes synthesized by the Rough Endoplasmic Reticulum (RER). They function as the cell's waste disposal system and can trigger autolysis in damaged cells.

Your note

More from Chapter 1: The fundamental unit of life

With reference to Plastids, consider the following statements: 1. They are present only in plant cells. 2. Chromoplasts are colourless plastids, while leucoplasts contain chlorophyll. 3. Unlike mitochondria, plastids lack their own DNA and ribosomes. Which of the statements given above is/are correct?

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Which of the following pairs is correctly matched?

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Consider the following statements about Vacuoles: 1. They are small-sized in animal cells while plant cells have very large vacuoles. 2. In Amoeba, the food vacuole is absent. 3. They can play a role in expelling excess water from the cell. Which of the statements given above is/are correct?

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With reference to osmosis, consider the following statements: 1. Osmosis is the net diffusion of water across a selectively permeable membrane. 2. If a cell is placed in a hypotonic solution, it is likely to shrink. 3. Water molecules pass across the membrane in only one direction during osmosis. Which of the statements given above is/are correct?

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A plant cell is placed in a hypertonic solution. Which of the following phenomena is most likely to occur?

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The correct option is (c) 2 and 3 only.

Explanation

Statement-wise Analysis

Statement 1 is Incorrect. Lysosomes are not formed by mitochondria. They are formed by the process of packaging in the Golgi apparatus. The Golgi apparatus modifies and packages proteins received from the Endoplasmic Reticulum into vesicles, some of which mature into lysosomes.
Statement 2 is Correct. The isolated lysosomal vesicles are very rich in almost all types of hydrolytic enzymes (hydrolases – lipases, proteases, carbohydrases). These enzymes are synthesized by the Rough Endoplasmic Reticulum (RER) and are subsequently transported to the Golgi apparatus for processing before being packaged into lysosomes.
Statement 3 is Correct. Lysosomes are often referred to as the "suicide bags" of the cell. If the cell gets damaged or during starvation, lysosomes may burst, and the released enzymes digest the cell's own organelles and components. This process is known as autolysis.