Incomplete double circulation is found in:
Correct answer: C. Amphibians
- A. Aves
- B. Fishes
- C. Amphibians
- D. Mammals
Explanation
Amphibians have a three-chambered heart comprising two atria and one ventricle. Oxygenated and deoxygenated blood received in the left and right atrium, respectively, gets mixed in the single ventricle, hence it is termed as incomplete double circulation.
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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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