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Question
Which of the following group of animals bear a pouch outside the mother's body for carrying their young one?
Which of the following group of animals bear a pouch outside the mother's body for carrying their young one?
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Solution
The correct option is A Marsupials
Marsupial is a subclass of mammals characterized by the presence of an abdominal pouch to carry their underdeveloped young ones for some time after birth. The presence of fluid-filled sac (amnion) around the embryo during its development is a key feature of amniotes. Amniotes include three groups namely Reptilia, Aves and Mammalia. Placental mammals are characterized by the development of a placenta to facilitate the exchange of materials between mother and fetus. The placenta allows the young to remain within the mother’s body until embryonic development is complete and young ones are born at a more mature stage than marsupials. Monotremes are egg-laying mammals and prokaryotes are the unicellular organisms without any defined nucleus. Therefore, the correct answer is option A.
Marsupial is a subclass of mammals characterized by the presence of an abdominal pouch to carry their underdeveloped young ones for some time after birth. The presence of fluid-filled sac (amnion) around the embryo during its development is a key feature of amniotes. Amniotes include three groups namely Reptilia, Aves and Mammalia. Placental mammals are characterized by the development of a placenta to facilitate the exchange of materials between mother and fetus. The placenta allows the young to remain within the mother’s body until embryonic development is complete and young ones are born at a more mature stage than marsupials. Monotremes are egg-laying mammals and prokaryotes are the unicellular organisms without any defined nucleus.
Therefore, the correct answer is option A.
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