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NDA 2026
Exam
NDA
Year
2026
Subject
General Ability
Chapter
General Science

NDA 2026 · General Ability · General Science

In which one of the following groups of animals, oestrus cycle is...

In which one of the following groups of animals, oestrus cycle is not observed?

Options

  1. ACows
  2. BMonkeys
  3. CRats
  4. DTigers

Correct answer

B. Monkeys

Step-by-step solution

The reproductive cycle in female primates such as monkeys, apes, and humans is called the menstrual cycle.

In non-primate mammals like cows, sheep, rats, deers, dogs, and tigers, the reproductive cycle is called the oestrus cycle.

Therefore, the oestrus cycle is not observed in monkeys.

Answer: Monkeys
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