Question

Answer yes (Y) or no (N) against each of following organisms based on whether or not they have an oestrous cycle.
Cow, Sheep, Monkey, Rat, Deer, Dog, Ape, Tiger, Human,

• A. Y, N, Y, Y, N, N, Y, Y, Y
• B. N, Y, Y, Y, N, Y, N, Y, Y
• C. Y, Y, Y, N, Y, Y, Y, Y, N
• D. Y, Y, N, Y, Y, Y, N, Y, N

Answer 1

The correct option is D Y, Y, N, Y, Y, Y, N, Y, N

Oestrous cycle is the reproductive cycle present in the females of the phylum Mammalia, but which do not belong to the order Primates. Cow, sheep, sat, dog, deer and tiger do not belong to the order Primate.
The reproductive cycle in the females of the order Primate is called menstrual cycle. Human, ape and monkey belong to Primates.