Classes of Animals MCQs with Answers

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The urinary bladder is present in embryonic birds but is absent in adult birds (except for the ostrich and some other species).

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Animals without a backbone are called invertebrates.

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Tortoise is not a true amphibian animal; it is a reptile.

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The class Cubozoa includes box jellies and sea wasps, characterized by a cube-shaped medusa and complex eyes.

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The young one of a lion is called a cub.

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Nematocysts are specialized stinging cells (cnidocytes) characteristic of Cnidarians.

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The skeleton in an earthworm is a hydrostatic skeleton, which is a fluid-filled body cavity that provides support through pressure.

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In arthropods, the exoskeleton is made of chitin, a tough polysaccharide that provides structural support and protection.

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The zoological (scientific) name of the common white butterfly is Pieris Rapae.

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The ciliated larval stage in the life cycle of many molluscs is called a trochophore.