HORTICULTURE SCIENCE
ENTOMOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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flies, wasps, ants, beetles
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spiders, mites, ticks
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crabs, lobsters, crayfish, pillbugs
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millipedes, centipedes
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octopi, squid
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Detailed explanation-1: -Answer and Explanation: The correct option is b, sea urchins. Sea urchins (Echinus) is not a member of the phylum Arthropoda.
Detailed explanation-2: -They belong to the phylum Mollusca. It is grouped within the class Cephalopoda with squids, cuttlefish, and nautiloids. It has bilateral symmetry, with two eyes, and a break, with its mouth at the center point of the eight limbs.
Detailed explanation-3: -The earthworm is not an arthropod. It belongs to phylum Annelida.
Detailed explanation-4: -Species that have limbs fall under three main groups of animals: arthropods, such as insects and crustaceans; vertebrates, like amphibians, reptiles and mammals; and a specialized group of mollusks known as cephalopods, which includes squid, cuttlefish and octopuses.