What is common in whale, bat and rat?
Correct answer: B. Muscular diaphragm between thorax and abdomen
- A. Absence of neck
- B. Muscular diaphragm between thorax and abdomen
- C. Extraabdominal testes to avoid high temperature of body
- D. Absence of body hair
Explanation
Whale, bat and rat are mammals. Diaphragm is present in mammals. The diaphragm separates the thoracic cavity (with lung and heart) from the abdominal cavity (with digestive system and urogenital system). In its relaxed state, the diaphragm is shaped like a dome. It is controlled by the phrenic nerve.
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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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