Amphibians generally have three chambers in their hearts. What type of chambers they are?
Correct answer: A. One ventricle, two atria
- A. One ventricle, two atria
- B. Two ventricles, one atrium
- C. One ventricle, one atrium
- D. One ventricle, one atrium, one sinus venosus
Explanation
Amphibians typically have a heart with three chambers, which includes one ventricle and two atria. This structure allows for some mixing of oxygenated and deoxygenated blood, which is suitable for their metabolism and lifestyle. In contrast, the hearts of birds and mammals have four chambers (two atria and two ventricles) to completely separate oxygenated and deoxygenated blood. The incorrect options either suggest an incorrect number of chambers or misidentify the sinus venosus as a primary chamber.
This question appeared on the ETEA MDCAT 2016 paper, which you can sit online with every answer explained.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
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.
Practise Biodiversity and Variety of Life
3,130 free Biodiversity and Variety of Life MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.