SSC CGL Science – Cell & Tissues – Level 2 · Exam Level · Tier I Sprint

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SSC CGL Science – Cell & Tissues – Level 2 · Exam Level · Tier I Sprint – 15 questions, subject: General Science. Every question has the correct answer with a one-line explanation; tap "Show Answer". Free practice for TNPSC, UPSC, SSC, Bank and RRB exams – Shanmugam IAS Academy, Coimbatore.

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1.  
Diagram-basedIn the animal cell shown, the structure labelled S is:

Correct Answer: C [Centrioles]

Explanation:

S = the pair of rods at right angles = centrioles.

2.  
Diagram-basedIn the same figure, which label marks the organelle that releases energy as ATP?

Correct Answer: B [P]

Explanation:

ATP = mitochondrion = label P (bean shape with folded inner membrane).

3.  
Match the followingMatch the organelle with its function:
P. Lysosome Q. Golgi apparatus R. Ribosome
1. Protein synthesis 2. Intracellular digestion 3. Packaging and dispatch

Correct Answer: A [P-2, Q-3, R-1]

Explanation:

Lysosome – digestion; Golgi – packaging; ribosome – protein.

4.  
Chronological orderArrange in chronological order of their work on cells:
Robert Brown, Robert Hooke, Rudolf Virchow, Leeuwenhoek

Correct Answer: D [Robert Hooke → Leeuwenhoek → Robert Brown → Rudolf Virchow]

Explanation:

Answer: Robert Hooke → Leeuwenhoek → Robert Brown → Rudolf Virchow. 1665 → 1674 → 1831 → 1855.

5.  
Assertion–ReasonAssertion (A): A plant cell kept in pure water does not burst.
Reason (R): A plant cell has a rigid cell wall.

Correct Answer: A [Both A and R are true and R is the correct explanation of A]

Explanation:

Water enters (hypotonic) but the wall resists, so the cell turns turgid instead of bursting.

6.  
Odd one outOdd one out (by number of membranes):

Correct Answer: C [Lysosome]

Explanation:

Nucleus, mitochondrion and chloroplast have double membranes; lysosome has a single membrane.

7.  
A cell with 2n = 16 chromosomes undergoes meiosis. Each daughter cell will have:

Correct Answer: A [8 chromosomes]

Explanation:

Meiosis halves the number: 16/2 = 8.

8.  
A red blood cell is placed in a concentrated salt solution. It will:

Correct Answer: B [shrink]

Explanation:

Hypertonic outside → water leaves → the cell shrinks.

9.  
Aerenchyma (parenchyma with large air cavities) helps aquatic plants to:

Correct Answer: D [float (buoyancy)]

Explanation:

Air cavities give buoyancy to aquatic plants.

10.  
Which organelle helps liver cells detoxify many poisons and drugs?

Correct Answer: B [Smooth endoplasmic reticulum]

Explanation:

SER makes lipids and detoxifies poisons and drugs in the liver.

11.  
Two-quantity comparison
Quantity I: number of cells formed from one cell by one complete meiosis
Quantity II: number of cells formed from one cell by two successive rounds of mitosis

Correct Answer: C [Quantity I = Quantity II]

Explanation:

Answer: Quantity I = Quantity II. QI = 4; QII = 2² = 4. Equal.

12.  
Ciliated columnar epithelium is found in the:

Correct Answer: A [respiratory tract]

Explanation:

Cilia sweep mucus in the respiratory tract; skin – stratified squamous; kidney tubules – cuboidal.

13.  
Spot My MistakeA student writes, “A ligament joins a muscle to a bone.” What is the error?

Correct Answer: D [A ligament joins bone to bone; a tendon joins muscle to bone]

Explanation:

TM-LB: Tendon = Muscle–bone; Ligament = Bone–bone.

14.  
Reverse questionThe answer is “Antonie van Leeuwenhoek”. Which question does it answer?

Correct Answer: C [Who first saw free-living cells in pond water?]

Explanation:

Leeuwenhoek – pond water – 1674; the others are Brown, Virchow and Camillo Golgi.

15.  
Fill in the blankThe smallest cells, only about 0.3 µm long, are those of ______.

Correct Answer: A [Mycoplasma]

Explanation:

NCERT: Mycoplasma, about 0.3 µm, are the smallest cells.

➤ Full notes, shortcuts and every answer explained – SSC CGL 2026 General Science book (₹149): www.shanmugamiasacademy.in/study-materials/ssc-cgl-general-science

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