Classes of Animals MCQs with Answers

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Leptocardii is a group of Cephalochordate.

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Among tetrapods, reptiles (along with birds and mammals) exhibit amniotic eggs, which allow embryos to develop on land without drying out.

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Insects are characterized by all of these features: three pairs of legs, a pair of antennae, and a body divided into head, thorax, and abdomen.

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Solenogastres are a class of small, worm-like molluscs that lack a shell and instead possess calcareous sclerites embedded in their body wall.

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The basic respiratory structures of most fishes are gills, which extract dissolved oxygen from water.

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Animals that excrete ammonia as their primary nitrogenous waste are called ammonotelic.

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Rabbits belong to the order Lagomorpha.

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The sub-class Metatheria is distinguished on the basis of Marsupium (a pouch where the immature young are carried and nursed).

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The bat differs from birds in having a diaphragm, as bats are mammals and possess a muscular diaphragm for respiration, while birds lack one.

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Insects breathe through spiracles, which are small openings on the sides of their body.