Which of the following is the exclusive character of mammals?
Correct answer: C. Hair
- A. Homcothermic
- B. Poikilothermic
- C. Hair
- D. Four chambered heart
Explanation
Hair is a defining characteristic of mammals. Most mammals have hair or fur covering some or all of their bodies. This feature distinguishes them from other animal groups.
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About Kingdom Animalia
Animals are multicellular, heterotrophic eukaryotes whose cells lack cell walls and chloroplasts, with specialised tissues in most groups. Coverage includes body symmetry, tissue layers, coelom, segmentation and levels of organisation, plus major phyla such as Porifera, Cnidaria, Platyhelminthes, Annelida, Arthropoda, Mollusca and Chordata.
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