Which vertebrate group was the first to invade land successfully?
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Correct answer: Hair covering the body
Hair is a unique feature of mammals, absent in reptiles. It plays roles in insulation, sensory perception, and camouflage, and is a key diagnostic character of the class Mammalia.
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More Modern Animal Classification questions
- Which character is used to distinguish mammals from reptiles?
- A phylogenetic tree represents:
- Which group shows the highest level of parental care among vertebrates?
- Which fossil form provides a connecting link between reptiles and birds?
- Which vertebrate class is characterized by a four-chambered heart without mixing of blood?
- Which classification approach uses molecular data such as DNA sequences?