Question

Which of the following is viviparous?
A) Running birds
B) Whales
C) Bats
D) Both B and C

Answer 1

Hint: Animals which can give birth directly to young one are known as viviparous animals. In other words, the embryo development happens inside the body of the mother.

Complete answer:
Let us analyse the options to find the correct answer.
Option A: Birds produce eggs so they are oviparous. The eggs hatch after leaving the mother’s body. They get more nutrition and become healthy in the nest. Hence, option A is incorrect.
Option B: Whales are a kind of aquatic and marine animal belonging to the class Mammalia. Whales are viviparous as they give birth to young ones which are nourished inside the female body.
Option C: Bats are also viviparous. They give birth to their young ones and nurse them with the milk which is produced from their body. Bats are considered one of the slowest reproducing animals and female bats often only produce one offspring per year.
Option D: This option is most relevant and correct as we have seen both bats and whales are viviparous. They give birth to their young ones which are grown and nourished inside the female body. Hence, option D is correct.

Additional information:
The eggs of most of the animals that live on land are protected by hard shells. Calcium Carbonate is present in large quantities with trace quantities of other elements as well. The fertilization takes place internally, water dwelling animals like fish and amphibians lay eggs that have not been fertilized yet then the males lay sperm on top of eggs which is called external fertilization.

Thus, the correct answer is option (D) Both B and C.

Note: The two terms oviparous and viviparous have completely different meanings, so please do not get confused between both the terms.
i) Oviparous: Animals which lay eggs and these eggs develop into young individuals. Example: Birds
ii) Viviparous: Animals are born as live young individuals.