What Are Monotremes?

 Mammals - the group or the class of animals that give birth to their young ones and feed the babies through breastmilk. What if there are animals that lay eggs and also breastfeed their babies? Yes, there is a group of animals that lay eggs and breastfeed, these groups of animals called MONOTREMES.  


The group of animals that belong to this class is the 


  • Duck-billed platypus

  • Short-beaked echidna

  • Western long-beaked echidna

  • Eastern long-beaked echidna

  • Sir David’s long-beaked echidna




Short Beaked Echidna

Duck-billed Platypus


The Characteristics of Monotremes


Characteristics of the monotremes are as 


  • Instead of a mouth, these monotremes have beaks or bills.

  • Monotremes are capable of electroreception( the biological ability to perceive natural electrical stimuli), in simple words the ability to detect prey underwater.

  • Lower metabolic rates compared to other mammals. 

  • Monotremes are warm-blooded.

  • These monotremes have hair or fur, and three middle ear bones. 

  • Single bone in their lower jaw

  • They have a fully divided four-chambered heart.

  • They lay eggs instead of giving birth.

  • The modern, adult monotremes have no teeth.

  • Monotremes lack nipples, so they use mammary glands which excrete milk to nourish their young ones. Baby monotremes lap or slurp from their mother’s skin where they get the milk.


Conclusion


Monotremes are very different from other mammals, because they lay eggs like reptiles, amphibians, and birds instead of giving birth, and they nourish their younger ones with milk like mammals. These monotremes are found only in Australia and New Guinea. 

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