GS Biology Questions with Answers | General Science GK | Page 22

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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Q211

Which of the following sets is the evidence of evolution?

A Homologous and vestigial organs
B Analogous and vestigial organs
C Homologous and analogous organs
D All of the above

Answer: Option A

Explanation: Homologous and vestigial organs provide clear evidence of evolutionary relationships.

Q212

Of the following anatomical structures, which is homologous to the wing of a bat?

A The arm of a human
B The wing of a butterfly
C The tail of a fish
D The dorsal fin of a shark

Answer: Option A

Explanation: The human arm and bat wing share a common bone structure indicating homology.

Q213

Which set includes only analogous organs?

A Wings of butterfly, housefly and bat
B Hind legs of horse
C Hands of man, monkey and kangaroo
D Mandibles of cockroach, mosquito and honeybee

Answer: Option A

Explanation: Wings of butterfly, housefly and bat have similar function but different evolutionary origins.

Q214

Which set represents all vestigial structures in humans?

A Vermiform appendix, body hair and cochlea
B Wisdom teeth, coccyx and patella
C Coccyx, vermiform appendix and muscles of ear pinna
D Body hair, muscles of ear pinna and atlas vertebra

Answer: Option C

Explanation: These structures are reduced and non-functional remnants in humans.

Q215

The earliest animal to have been domesticated by man most likely is

A horse
B pig
C dog
D cow

Answer: Option C

Explanation: Dogs were among the first animals domesticated by humans.

Q216

Presence of gill slits in the embryo of all vertebrates supports the theory of

A organic evolution
B recapitulation
C metamorphosis
D biogenesis

Answer: Option B

Explanation: Recapitulation theory states embryonic development reflects evolutionary history.

Q217

Appearance of ancestral characters in newborns, such as tail and multiple mammary glands, is known as

A homologous
B analogous
C atavistic
D vestigial

Answer: Option C

Explanation: Atavistic traits are ancestral features that reappear sporadically.

Q218

Evolution is defined as

A history of race
B development of race
C history and development of race with variations
D progressive history of race

Answer: Option C

Explanation: Evolution involves both historical and ongoing changes in a population.

Q219

The book "Philosophic zoologique" published in 1809 was written by

A Mendel
B Darwin
C De Vries
D Lamarck

Answer: Option D

Explanation: Lamarck authored "Philosophic zoologique" outlining early evolutionary ideas.

Q220

Penguin is a bird that lost the use of its wings by not flying. This view is expressed by

A Darwin
B Wallace
C Lamarck
D Huxley

Answer: Option C

Explanation: Lamarck believed in use and disuse, explaining loss of wings in penguins.

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GS Biology Questions and Answers

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