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
Showing 10 of
195 questions
21. Iron deficiency results in-
- Leaf tip necrosis
- Small leaves disease
- Decreased protein synthesis
- Intervenal chlorosis appearing first in young leaves
22. A phytohormone is-
- Naturally produced
- Synthetic substance
- Both (A) and (B)
- None of these
23. During the seismonastic movement in Mimosa pudica turgor changes occur in-
- Leaflets
- Stipules
- Pulvinus leaf base
- Petiole and stem
24. Evergeen trees remain green through the year on account of-
- Cold climate
- Absence of leaf fall
- Leaves falling in small number interval
- Supply of moisture throughout year
25. Phenotypic ratio of dihybrid test cross is-
- 15 : 1
- 3 : 1
- 9 : 3 : 3 : 1
- 1 : 1 : 1 : 1
26. The damaged ozone layer is situated in-
- Ionosphere
- Mesosphere
- Stratosphere
- Troposphere
27. Which one of the following is ordinarily not an air pollutant ?
- CO2
- CO
- SO2
- Hydrocarbon
30. The first juvenile larva of Ascaris is known as-
- Filiform larva
- Rhabditiform larva
- Miracidium larva
- Microfilariae