GS Biology Questions with Answers | General Science GK | Page 34

GS Biology questions with answers enhance your general science knowledge, especially for exams like SSC, Railways, and UPSC. Biology is an important branch of general science that deals with the study of life, organisms, and their vital processes. These general science questions and answers cover topics such as cells, human anatomy, genetics, and ecology — frequently asked in competitive exams. Practicing these questions helps you understand biological concepts clearly and boosts your score in the general awareness section. Strengthen your science fundamentals and prepare effectively for multiple-choice questions in upcoming tests.

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Q331

Which is the correct sequence in the food chain in grassland?

A Grass → wolf → deer → buffalo
B Grass → insect → bird → snake
C Grass → snake → insect → deer
D Bacteria → grass → rabbit → wolf

Answer: Option B

Explanation: This sequence correctly follows feeding relationships.

Q332

When a big fish eats a small fish, which eats water fleas supported by phytoplankton, the water fleas are

A primary consumers
B secondary consumers
C top consumers in this food chain
D producers

Answer: Option A

Explanation: Water fleas are primary consumers feeding on producers.

Q333

In natural ecosystem, decomposers include

A only microscopic animals
B only bacteria and fungi
C the above two types plus microscopic animals
D only the above two types of organisms

Answer: Option B

Explanation: Decomposers mainly consist of bacteria and fungi.

Q334

The food chain in which microorganisms break down energy-rich compounds synthesized by producers is

A detritus food chain
B predator food chain
C consumer food chain
D parasitic food chain

Answer: Option A

Explanation: Detritus food chain involves decomposition of dead matter.

Q335

An aquatic plant with floating leaves

A has stomata on leaf surface
B has stomata on lower surface
C has stomata
D has stomata only on upper surface

Answer: Option D

Explanation: Floating leaves have stomata mainly on the upper surface for gas exchange.

Q336

Which is the most stable ecosystem?

A Desert
B Mountain
C Ocean
D Forest

Answer: Option C

Explanation: Oceans are stable due to large size and buffering capacity.

Q337

Which of the following is a logical sequence in carbon cycle?

A Producer → consumer → decomposer
B Decomposer → consumer → producer
C Producer → decomposer → consumer
D Consumer → producer → decomposer

Answer: Option A

Explanation: Energy and matter flow through these trophic levels logically.

Q338

Which of the following structures is thought to be exceptionally rich in hydrolytic enzymes?

A Lysosomes
B Microsome
C Chromosomes
D Endoplasmic reticulum

Answer: Option A

Explanation: Lysosomes digest cellular debris using hydrolytic enzymes.

Q339

The selective digestion of cytoplasmic organelles by lysosomes is called

A Osmotrophy
B Autophagy
C Heterophony
D Autolysis

Answer: Option B

Explanation: Autophagy recycles damaged organelles.

Q340

The arrangement of outer and central microtubules in a cilium is called the

A 9 + 1 pattern
B 9 + 2 pattern
C 8 + 2 pattern
D 8 + 1 pattern

Answer: Option B

Explanation: Typical cilia have a 9+2 microtubule arrangement.

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GS Biology Questions and Answers

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