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CBSE Class 9  >  Class 9 Test  >  Science New NCERT 2026-27 (New Syllabus)  >  Test: Cell: The Building Block of Life - 2 - Class 9 MCQ

Cell: The Building Block of Life - 2 - Free MCQ Practice Test with solutions,


MCQ Practice Test & Solutions: Test: Cell: The Building Block of Life - 2 (15 Questions)

You can prepare effectively for Class 9 Science Class 9 New NCERT 2026-27 (New Syllabus) with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test: Cell: The Building Block of Life - 2". These 15 questions have been designed by the experts with the latest curriculum of Class 9 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 15 minutes
  • - Number of Questions: 15

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Test: Cell: The Building Block of Life - 2 - Question 1
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What is the function of the Golgi apparatus in a cell?

Detailed Solution: Question 1

Golgi apparatus modifies, sorts, and packages materials for transport.

Test: Cell: The Building Block of Life - 2 - Question 2
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What are chromoplasts and where are they found?

Detailed Solution: Question 2

Chromoplasts contain pigments and are found in flowers and fruits.

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Test: Cell: The Building Block of Life - 2 - Question 3
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What is contact inhibition and what happens when cells lose this property?

Detailed Solution: Question 3

Loss of contact inhibition leads to uncontrolled division and tumour formation.

Test: Cell: The Building Block of Life - 2 - Question 4
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Mitosis produces ________ daughter cells, each with ________ chromosomes compared to the parent cell.

Detailed Solution: Question 4

Mitosis produces two identical daughter cells with the same chromosome number.

Test: Cell: The Building Block of Life - 2 - Question 5
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Which of the following pairs of cell organelles contains their own DNA and ribosomes?

Detailed Solution: Question 5

Mitochondria and nucleus both contain DNA; mitochondria also have ribosomes.

Test: Cell: The Building Block of Life - 2 - Question 6
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What is Programmed Cell Death (PCD) and give one example of its role in development?

Detailed Solution: Question 6

PCD is a controlled process important for development, like removal of cells between fingers.

Test: Cell: The Building Block of Life - 2 - Question 7
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A researcher places an onion peel cell in a concentrated sugar solution. What will be observed?

Detailed Solution: Question 7

This is plasmolysis where the cytoplasm shrinks away from the cell wall.

Test: Cell: The Building Block of Life - 2 - Question 8
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Which option correctly places organelles under "Present in plant cells" and "Absent in animal cells"?

Detailed Solution: Question 8

Leucoplast and cell wall are specific to plant cells.

Test: Cell: The Building Block of Life - 2 - Question 9
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Which statement about meiosis is correct?

Detailed Solution: Question 9

Meiosis produces four haploid daughter cells.

Test: Cell: The Building Block of Life - 2 - Question 10
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A researcher removes all mitochondria from a eukaryotic cell. What is the outcome?

Detailed Solution: Question 10

Without mitochondria, ATP production stops and the cell cannot function.

Test: Cell: The Building Block of Life - 2 - Question 11
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In which organelle does cellular respiration take place, and in what form is the released energy stored?

Detailed Solution: Question 11

Mitochondria are the sites of cellular respiration, where glucose and other molecules are broken down to release energy. This energy is stored in the form of a molecule called Adenosine Triphosphate (ATP), which acts as the energy currency of the cell and is used for most cellular activities. This is why mitochondria are called the powerhouse of the cell. The inner membrane of mitochondria is folded into projections called cristae, which increase surface area for these reactions.

Test: Cell: The Building Block of Life - 2 - Question 12
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What would most likely happen if all lysosomes in an animal cell suddenly stopped functioning?

Detailed Solution: Question 12

Lysosomes are single membrane-bound sacs filled with enzymes that break down unwanted proteins, carbohydrates, fats, and damaged parts of the cell, keeping it clean and healthy. The products of breakdown are released into the cytoplasm for reuse. If lysosomes stopped functioning, waste materials and damaged, worn-out organelles would accumulate inside the cell, eventually disrupting its normal functioning.

Test: Cell: The Building Block of Life - 2 - Question 13
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Which of the following correctly explains why prokaryotic cells are generally smaller and simpler than eukaryotic cells?

Detailed Solution: Question 13

Prokaryotic cells lack a well-defined, membrane-bound nucleus — their genetic material is present in a region called the nucleoid. They also lack membrane-bound organelles. As a result, most cellular activities take place directly in the cytoplasm. Eukaryotic cells have a true nucleus and several membrane-bound organelles, each performing specific functions, making them larger and more complex. The diameter of a typical prokaryotic cell is 1 to 10 µm compared to 10 to 100 µm for eukaryotic cells.

Test: Cell: The Building Block of Life - 2 - Question 14
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Human sperm cells contain lysosomal enzymes in a structure at the tip of the sperm head. What role do these enzymes play during fertilisation?

Detailed Solution: Question 14

Human sperm cells contain lysosomal enzymes concentrated in a special structure at the tip of the sperm head called the acrosome. When a sperm reaches an egg during fertilisation, these enzymes are released and break down the outer protective layer of the egg. This creates a pathway for the sperm to penetrate and fertilise the egg. This is a unique example of lysosomal enzymes performing a vital function outside the cell.

Test: Cell: The Building Block of Life - 2 - Question 15
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Which phenomenon prevents normal animal cells from dividing uncontrollably, and what happens when this mechanism fails?

Detailed Solution: Question 15

In most animal cells, cell division stops when cells come into contact with neighbouring cells. This is called contact inhibition. It is a natural control mechanism that prevents overcrowding of cells. When cancer cells lose this control, they ignore the stop signals and keep dividing uncontrollably, leading to the formation of tumours. If these tumour cells invade neighbouring tissues and spread to other parts of the body, the condition becomes cancer. Plant cells do not show contact inhibition due to their rigid cell walls.

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About this Class 9 Practice Test

This test contains 15 MCQs on Cell: The Building Block of Life - 2 with detailed solutions for each question. It is part of the Science Class 9 New NCERT 2026-27 (New Syllabus) course on EduRev, designed to align with the current Class 9 syllabus. Each solution explains not just the correct answer but also gives you an understanding of the topic — not just to attempt the question but also help you prepare for the exam with practice.

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