SCIENCE
ZOOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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One pair of antennae, 3 pairs of chewing appendages
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One pair of antennae, 2 pairs of chewing appendages
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Two pairs of antennae, one pair of chewing appendages
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Two pairs of antennae, 3 pairs of chewing appendages
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Detailed explanation-1: -Crustaceans, like lobsters, crabs, and shrimp, have two or three body segments. They often have three pairs of appendages for chewing, and at least five pairs of legs. Crustaceans are the only arthropods that have two pairs of antennae. They have a lifecycle that goes through metamorphosis.
Detailed explanation-2: -Crustaceans are generally grouped by the number of segments they possess in each body region (head, thorax, and abdomen). The only appendages that all crustaceans have in common is two pairs of antennae.
Detailed explanation-3: -On the segments of the head, these include two pairs of sensory antennae, one pair of mandibles (for chewing food), and two pairs of maxillae (to help the mandibles in positioning the food).
Detailed explanation-4: -The Crustacea retained two pairs of antennae, but the Myriapoda and Hexapoda have only one pair of antennae, associated with the deutocerebrum.