Which of the following is a vestigial organ in humans? MCQ with Answer and Explanation

Which of the following is a vestigial organ in humans?
A. Appendix
B. Lungs
C. Liver
D. Heart
Answer: Option A
Solution (By JKExamLibrary)
The vermiform appendix is a remnant of the cecum in herbivorous ancestors, now with minor immune function, thus considered vestigial.

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Practice More Biology Questions

Question #1
Which branch of biology deals with the study of heredity and variation?
A. Embryology
B. Paleontology
C. Ecology
D. Genetics

Correct Answer: Option D


Explanation:
Genetics is the science of heredity and variation, explaining how traits are passed from parents to offspring and why individuals differ. Ecology studies organisms and environment, embryology deals with development, paleontology with fossils. Gregor Mendel is the father of genetics. The term 'genetics' was coined by William Bateson.

This question belongs to: Science Biology
Question #2
Which of the following is a correct statement about prokaryotic DNA?
A. It is linear and associated with histones.
B. It is circular and located in the nucleoid region.
C. It is enclosed within a nuclear membrane.
D. It consists of multiple linear chromosomes.

Correct Answer: Option B


Explanation:
Prokaryotic DNA is typically circular, double-stranded, and found in a nucleoid region without a nuclear membrane. It is not associated with histones (though some Archaea have histone-like proteins). Plasmids are extra-chromosomal DNA. Eukaryotic DNA is linear and complexed with histones. This difference is fundamental in cell classification.

This question belongs to: Science Biology
Question #3
The condition caused by excess growth hormone after puberty is:
A. Dwarfism
B. Acromegaly
C. Cretinism
D. Gigantism

Correct Answer: Option B


Explanation:
Acromegaly is the enlargement of bones and soft tissues due to overproduction of growth hormone in adults after growth plates have fused. Gigantism occurs in childhood, dwarfism GH deficiency, cretinism congenital hypothyroidism.

This question belongs to: Science Biology