difference between prototheria and metatheria
Answers
Answered by
2
1. The prototheria are described as primitive unfinished mammals by Romer.
2. The mammary glands of prototheria are modified swear glands unlike the Eutheria. Teatless mammary glands are characteristic of prototheria.
Marsupials are more advanced than the prototherians. They are all pouched mammals characterised by the presence of an integumentary brood pouch ormarsupium in which the immature young ones are fed with the milk of the mother.
The marsupials occupy an intermediate position between the primitive mammals (monotremes) and the higher mammals (eutherians).
1. Marsupium or brood pouch is present in females. The mammary glands are present in the marsupium.
2. The mammary glands of prototheria are modified swear glands unlike the Eutheria. Teatless mammary glands are characteristic of prototheria.
Marsupials are more advanced than the prototherians. They are all pouched mammals characterised by the presence of an integumentary brood pouch ormarsupium in which the immature young ones are fed with the milk of the mother.
The marsupials occupy an intermediate position between the primitive mammals (monotremes) and the higher mammals (eutherians).
1. Marsupium or brood pouch is present in females. The mammary glands are present in the marsupium.
Answered by
3
Prototheria is the subclass containing the egg-laying mammals (the echidna and platypus). Metatheria is the subclass that encompasses marsupials and a.
Similar questions