Birds are different from mammals in all except:
Correct answer: B. They are warm blooded
- A. They have feathers instead of hairs
- B. They are warm blooded
- C. They lay hard shell eggs
- D. They have syrinx as voice organ
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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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