1. Tardigrade
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  4. Mammary glands are without teats or nipples in:

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Q. Mammary glands are without teats or nipples in:

EAMCETEAMCET 1996

Solution:

Prototheria is a subclass of Mammalia. It includes most primitive and oviparous mammals. In these, mammary glands are without teats or nipples e.g., Omithorhynchus, Tachyglossus.