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CBSE Class 9  >  Class 9 Test  >  Science New NCERT 2026-27 (New Syllabus)  >  Test: Cell: The Building Block of Life - 1 - Class 9 MCQ

Cell: The Building Block of Life - 1 - Free MCQ Practice Test with solutions,


MCQ Practice Test & Solutions: Test: Cell: The Building Block of Life - 1 (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 - 1". 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 - 1 - Question 1
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Which of the following correctly describes the limit of resolution of the human eye?

Detailed Solution: Question 1

The limit of resolution of the human eye is 0.1 mm (100 micrometres). When two points are closer than this, the eye cannot distinguish them as separate points.

Test: Cell: The Building Block of Life - 1 - Question 2
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Robert Hooke first observed cells in 1665 using a self-designed microscope. What material did he observe?

Detailed Solution: Question 2

Robert Hooke observed cork and named the small compartments “cells.”

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Test: Cell: The Building Block of Life - 1 - Question 3
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A potato piece placed in 20% salt solution loses weight. Which process is responsible for this?

Detailed Solution: Question 3

Water moves out of the potato cells into the hypertonic solution by osmosis, causing weight loss.

Test: Cell: The Building Block of Life - 1 - Question 4
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Which of the following is the correct description of a hypotonic solution?

Detailed Solution: Question 4

In a hypotonic solution, the solute concentration outside the cell is less than that inside the cell. As a result, water moves into the cell, causing the cell to swell. This matches the description in option c.

Test: Cell: The Building Block of Life - 1 - Question 5
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What is the primary chemical component of the plant cell wall?

Detailed Solution: Question 5

The plant cell wall is mainly composed of cellulose.

Test: Cell: The Building Block of Life - 1 - Question 6
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Which of the following pairs correctly describes the fluid-mosaic model of the cell membrane?

Detailed Solution: Question 6

The membrane consists of a lipid bilayer with embedded proteins and is fluid in nature.

Test: Cell: The Building Block of Life - 1 - Question 7
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Which organelle is known as the 'powerhouse of the cell' and why?

Detailed Solution: Question 7

Mitochondria produce ATP and supply energy for cellular activities.

Test: Cell: The Building Block of Life - 1 - Question 8
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In which part of the chloroplast is chlorophyll located, and what is the semi-fluid substance inside called?

Detailed Solution: Question 8

Chlorophyll is present in disc-shaped structures inside the stroma, which is the semi-fluid matrix.

Test: Cell: The Building Block of Life - 1 - Question 9
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Mature Red Blood Cells (RBCs) in humans do not have a nucleus. What is the advantage of this?

Detailed Solution: Question 9

Lack of nucleus allows more space for haemoglobin, increasing oxygen transport.

Test: Cell: The Building Block of Life - 1 - Question 10
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Which of the following correctly distinguishes prokaryotic cells from eukaryotic cells?

Detailed Solution: Question 10

Prokaryotes lack a membrane-bound nucleus, while eukaryotes have one.

Test: Cell: The Building Block of Life - 1 - Question 11
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Which of the following correctly describes the structure of the nuclear membrane?

Detailed Solution: Question 11

The nucleus has a double-layered covering called the nuclear membrane. It has pores that allow the transfer of material between the nucleus and the cytoplasm. The nucleolus is a dense round body inside the nucleus where synthesis of ribosomal subunits takes place. These subunits then exit to the cytoplasm where they assemble to form ribosomes.

Test: Cell: The Building Block of Life - 1 - Question 12
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What is the correct sequence of organisation from smallest to largest in a multicellular organism?

Detailed Solution: Question 12

In multicellular organisms, there is a clear hierarchy of organisation. Cells are the basic units that group together to form tissues. Different tissues are organised to form organs, and several organs work together to form organ systems. For example, nasal pores, nasal cavity, trachea, and lungs together form the respiratory system.

Test: Cell: The Building Block of Life - 1 - Question 13
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A cell is placed in a solution where the solute concentration outside equals the solute concentration inside the cell. What will happen?

Detailed Solution: Question 13

When a cell is placed in an isotonic solution — where the solute concentration outside equals the concentration inside — there is no net movement of water across the cell membrane. This is because there is no concentration gradient to drive osmosis in either direction. As a result, the cell remains unchanged in size. This is unlike hypotonic solution (cell swells) or hypertonic solution (cell shrinks).

Test: Cell: The Building Block of Life - 1 - Question 14
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Smooth Endoplasmic Reticulum (SER) does not have ribosomes on its surface. Which of the following functions is therefore associated with SER and NOT with RER?

Detailed Solution: Question 14

RER (Rough Endoplasmic Reticulum) has ribosomes attached to its surface, making it look rough. It is mainly involved in protein synthesis and protein secretion. SER (Smooth Endoplasmic Reticulum) lacks ribosomes, making it look smooth. Because of this structural difference, SER is involved in the synthesis and storage of fats and hormones instead. Both types are connected to the outer nuclear membrane.

Test: Cell: The Building Block of Life - 1 - Question 15
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Which of the following statements about meiosis is correct?

Detailed Solution: Question 15

Meiosis is a two-step division process that occurs only in the cells of reproductive organs. The parent cell divides twice to produce four daughter cells. During the first division, the chromosome number is reduced to half in each daughter cell. The second division is similar to mitosis. Each gamete produced therefore has half the number of chromosomes, which is restored to the full number when two gametes combine during fertilisation.

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About this Class 9 Practice Test

This test contains 15 MCQs on Cell: The Building Block of Life - 1 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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