When the body can be divided into identical left and right halves in only one plane, the symmetry is called:
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Correct answer: Bilateral symmetry
Bilateral symmetry, where the body can be divided into identical left and right halves along only one plane, is typical of complex animals such as Annelids and Arthropods. It promotes cephalization—concentration of sense organs and nervous tissue at the anterior end—and more directed movement.
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More Basis of Animal Classification questions
- The body cavity which is lined by mesoderm is called:
- In some animals, the body cavity is not lined by mesoderm; instead, the mesoderm is present as scattered pouches. This is known as:
- Which of the following phyla is characterized by the absence of a body cavity (acoelomate condition)?
- Metameric segmentation (metamerism) is a characteristic feature of:
- The notochord is derived from which germ layer?
- Animals that do not possess a notochord are called non-chordates. This group includes phyla from: