SSC CGL Science – Classification of Living Organisms – Level 3 · Challenge
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SSC CGL Science – Classification of Living Organisms – Level 3 · Challenge – 8 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.
Statement-basedWhich is/are correct?
I. All echinoderms are marine.
II. Mollusca is the largest animal phylum.
III. Hydra is a coelenterate.
I. All echinoderms are marine.
II. Mollusca is the largest animal phylum.
III. Hydra is a coelenterate.
Correct Answer: D [I and III only]
Explanation:
Arthropoda is the largest; Mollusca is second.
2.
Data tableRead: W: hair, mammary glands, lays eggs. X: feathers, flightless, swims. Y: dry scales, 4-chambered heart. Z: gills, bony skeleton, upright body with curled tail. Identify W, X, Y, Z.
Correct Answer: C [Platypus, penguin, crocodile, sea horse]
Explanation:
Egg-laying mammal; flightless swimming bird; reptile with 4 chambers; bony fish.
3.
Odd one outOdd one out (by kingdom):
Correct Answer: B [Euglena]
Explanation:
Euglena is a protist; the rest are fungi.
4.
Match the followingMatch:
P. Exocoetus Q. Ichthyophis R. Pteropus S. Scoliodon
1. Limbless amphibian 2. Flying fish 3. Dogfish (cartilaginous) 4. Flying fox (mammal)
P. Exocoetus Q. Ichthyophis R. Pteropus S. Scoliodon
1. Limbless amphibian 2. Flying fish 3. Dogfish (cartilaginous) 4. Flying fox (mammal)
Correct Answer: B [P-2, Q-1, R-4, S-3]
Explanation:
Exocoetus – flying fish; Ichthyophis – limbless amphibian; Pteropus – flying fox; Scoliodon – dogfish.
5.
Assertion–ReasonAssertion (A): Sharks have to swim constantly to avoid sinking.
Reason (R): Cartilaginous fishes do not have an air bladder.
Reason (R): Cartilaginous fishes do not have an air bladder.
Correct Answer: A [Both A and R are true and R is the correct explanation of A]
Explanation:
No air bladder → no buoyancy aid → constant swimming.
6.
Arrange in orderArrange in order of increasing complexity: Bryophytes, Algae, Gymnosperms, Pteridophytes
Correct Answer: D [Algae → Bryophytes → Pteridophytes → Gymnosperms]
Explanation:
No vascular tissue (algae, bryophytes) → vascular, no seeds → naked seeds.
7.
Statement-basedWhich pair is NOT correctly matched?
Correct Answer: A [Taenia – roundworm]
Explanation:
Taenia is the tapeworm (flatworm); Ascaris is the roundworm.
8.
Which statement about viruses is NOT correct?
Correct Answer: C [They contain both DNA and RNA]
Explanation:
A virus has either DNA or RNA, never both.
➤ Full notes, shortcuts and every answer explained – SSC CGL 2026 General Science book (₹149): www.shanmugamiasacademy.in/study-materials/ssc-cgl-general-science
📘 SSC CGL 2026 – General Science (Tier I + Tier II)
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› SSC CGL Science – Mock Test 3 – Tier II Style
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