Which of these animals shows internal fertilization?

Practice MCQ for SSC, UPSC, RRB Exams

A. Frog A.
B. Earthworm B.
C. Fish C.
D. Bird D.

Correct Answer: D সঠিক উত্তর: D

Explanation ব্যাখ্যা

Internal fertilisation occurs when the sperm fertilises the egg inside the female's body.
Birds have a cloaca, a single opening for their reproductive, digestive, and excretory systems. The male inserts his sperm into the female's cloaca, where fertilisation takes place.

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