GS Biology Questions and Answers
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.
GS Biology
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357 questions
331. Which is the correct sequence in the food chain in grassland?
- Grass → wolf → deer → buffalo
- Grass → insect → bird → snake
- Grass → snake → insect → deer
- Bacteria → grass → rabbit → wolf
332. When a big fish eats a small fish, which eats water fleas supported by phytoplankton, the water fleas are
- primary consumers
- secondary consumers
- top consumers in this food chain
- producers
333. In natural ecosystem, decomposers include
- only microscopic animals
- only bacteria and fungi
- the above two types plus microscopic animals
- only the above two types of organisms
334. The food chain in which microorganisms break down energy-rich compounds synthesized by producers is
- detritus food chain
- predator food chain
- consumer food chain
- parasitic food chain
335. An aquatic plant with floating leaves
- has stomata on leaf surface
- has stomata on lower surface
- has stomata
- has stomata only on upper surface
337. Which of the following is a logical sequence in carbon cycle?
- Producer → consumer → decomposer
- Decomposer → consumer → producer
- Producer → decomposer → consumer
- Consumer → producer → decomposer
338. Which of the following structures is thought to be exceptionally rich in hydrolytic enzymes?
- Lysosomes
- Microsome
- Chromosomes
- Endoplasmic reticulum
339. The selective digestion of cytoplasmic organelles by lysosomes is called
- Osmotrophy
- Autophagy
- Heterophony
- Autolysis
340. The arrangement of outer and central microtubules in a cilium is called the
- 9 + 1 pattern
- 9 + 2 pattern
- 8 + 2 pattern
- 8 + 1 pattern