Multiple choice

Which of the following is a correct statement?

  1. Menstrual and oestrous cycle is the same.

  2. Menstrual cycle occurs in females of all mammals.

  3. Menstrual cycle is influenced by light.

  4. The breeding in birds is affected by light.

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The statement 'the breeding in birds is affected by light' is true.