Question

Oviparous mammal is
(a) Equus
(b) Macropus
(c) Ornithorhynchus
(d) Pteropus

Answer 1

Hint: This mammal hunt underwater swims gracefully by padding with their front webbed feet and steering with their feet and having Beaver like a tail. The eyes and ears are covered with folds of skin.

Complete answer:
Ornithorhynchus is an oviparous mammal and commonly known as the platypus. Mammals give birth to their young ones so they are called viviparous. But there are some exceptions like Platypus (Ornithorhynchus), and Echidna (Tachyglossidae) which are oviparous mammals that means they lay eggs in spite of giving birth to their young ones.

Additional Information:
- Platypus are semi-aquatic egg-laying mammals native to eastern Australia including Tasmania.
- Platypus is also called the duck- billed platypus.
- Platypus is the only living representative of its family named Ornithorhynchidae and genus Ornithorhynchus, and a number of related species have been found in the records of the fossil.
- The platypus is one of the five extant species of monotremes together with the four species of echidna.
- Like any other monotremes, the platypus senses their prey through electrolocation. Electrolocation is the biological ability of an animal to perceive natural electrical stimuli. These are mainly found in aquatic and amphibious animals because water is a better conductor than air.
- The platypus also occurs as one of the few species of venomous mammals, as the male platypus is having a spur on the hindfoot. This spur delivers a venom that is capable of causing severe pain in humans.
- Equus are herbivorous, and mostly grazers, with simpler digestive systems. They are viviparous mammals belonging to the family Equidae and its numerous species have become extinct and known only from their fossils.
So, the correct answer is, '(c) Ornithorhynchus'.

Note:
- The platypus are oviparous mammals that lay eggs in spite of giving birth to their young ones.
- Platypus are semi- aquatic egg- laying mammals native to eastern Australia including Tasmania.
- The platypus senses their prey through the electrolocation technique.
- The platypus also occurs as one of the few species of venomous mammals.