Oestrous cycle is characteristic of mamma-lian females other than primates and occurs in females of

Options

A. Monkeys
B. Cows
C. Apes
D. Humans

Answer

**Step-by-Step Solution:**

1. **Understanding the Oestrous Cycle**: The oestrous cycle is a reproductive cycle found in many female mammals, characterized by the preparation of the body for potential pregnancy. It is different from the menstrual cycle, which is specific to primates, including humans.

2. **Identifying the Context**: The question specifies that we are looking for mammalian females other than primates that exhibit the oestrous cycle. Primates, such as humans, monkeys, and apes, typically undergo a menstrual cycle instead.

3. **Analyzing the Options**: The options provided are:
- A) Monkey
- B) Cows
- C) Apes
- D) Humans

4. **Eliminating Primates**: Since the question asks for mammals other than primates, we can eliminate options A (Monkey), C (Apes), and D (Humans) as they are all primates.

5. **Identifying the Correct Answer**: The only option left is B) Cows. Cows are non-primates and do exhibit the oestrous cycle, making them the correct answer.

6. **Conclusion**: Therefore, the oestrous cycle is characteristic of mammalian females other than primates and occurs in females of cows.

**Final Answer**: B) Cows

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