Question

Marine mammals, with a few exceptions, are a. oviparous b. ovoviviparous c. viviparous

Answer 1

Marine mammals , with few exception are viviparous.

Explanation:

• Mammals are those animals which are characterized by the presence of mammary gland and body hair.
• They feed milk to their young ones.
• The vertebrates are classified as viviparous, oviparous and ovoviviparous depending on the way their young ones develop and are nourished during their embryonic and foetal development.
• Viviparous animals are those which directly give birth to their young ones and have a distinct gestation period during which their babues develop inside their womb. These are placental mammals.
• Oviparous animals are those which lay egg and the embryo develops outside mothers body.
• Ovoviviparous  animals are those who do not lay their eggs but their eggs hatch inside their body .These are aplacental animals.
• Most mammals are viviparous.