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JIPMER2006BotanyAnimal Kingdom

Class Crustacea differs from Insecta in having :

Options

  1. Atwo pairs of antennae
  2. Bjointed foot
  3. Cchitinous cuticle
  4. Dnone of the above

Correct answer

A. two pairs of antennae

Step-by-step solution

The main characteristics of class Crustacea and Insecta are as follows : (1) Class Crustacea : Mostly aquatic with gills, two pairs of antennae and atleast three pairs of jaws, appendages mostly biramous and always more than four in the trunk region. Example : prawn, crab, lobster etc. (2) Class Insecta : Hexapod arthropods with a pair of antennae and three pairs of Jaws. Example : cockroach, grasshopper, bees, housefly etc.

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