Which class includes birds?

Study for the IB Marine Science Standard Level Exam. Prepare with interactive quizzes and in-depth explanations. Use our resources to excel in your marine science knowledge!

Multiple Choice

Which class includes birds?

Explanation:
Birds are placed in their own vertebrate class, Aves. This grouping reflects defining features of birds such as feathers, a beak, and the production of hard-shelled eggs, along with their typical metabolism that supports flight in many species. Among the options, only Aves describes birds. The other classes refer to different groups: Mammalia are animals with hair and mammary glands; Reptilia includes reptiles with scaly skin and generally ectothermic metabolism; Amphibia comprises frogs and salamanders with moist skin and a life cycle that includes metamorphosis.

Birds are placed in their own vertebrate class, Aves. This grouping reflects defining features of birds such as feathers, a beak, and the production of hard-shelled eggs, along with their typical metabolism that supports flight in many species. Among the options, only Aves describes birds. The other classes refer to different groups: Mammalia are animals with hair and mammary glands; Reptilia includes reptiles with scaly skin and generally ectothermic metabolism; Amphibia comprises frogs and salamanders with moist skin and a life cycle that includes metamorphosis.

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