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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195 questions
181. Plants absorb dissolved nitrates from soil and convert them into
- free nitrogen
- urea
- ammonia
- proteins
182. Poison glands of snakes are homologous to
- electric organs of fishes
- stings of rays
- sebaceous glands of mammals
- salivary glands of vertebrates
184. Most fish do not sink in water because of the presence of swim bladder air bladder air sacs air in spongy bones
- I and II are correct
- II and III are correct
- III and IV are correct
- I, II, III and IV are correct
186. Prokaryotic cells lack
- nucleolus
- nuclear membrane
- membrane bound by organelles
- All of these
187. Plants growing on sand are called as
- chasmophytes
- oxylophytes
- lithophytes
- psammophytes
189. Nitrogen is fixed in ecosystems in ways stated below. Which one of the statements below is false?
- By cyanobacteria
- By electrical discharges in the atmosphere
- By industrially synthesised fertilizer
- By denitrification
190. Plants developing in dry conditions are
- xerophytes
- mesophytes
- lithophytes
- hydrophytes