OBJECTIVE LIFE SCIENCE
DIVERSITY AMONG LIFE FORMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is an invertebrate?
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An animal with a backbone
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a mammal
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An animal without a backbone
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birds
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Explanation:
Detailed explanation-1: -invertebrate, any animal that lacks a vertebral column, or backbone, in contrast to the cartilaginous or bony vertebrates. More than 90 percent of all living animal species are invertebrates.
Detailed explanation-2: -Insects, annelids, mollusks, echinoderms, protozoa, crustaceans, and arachnids are all invertebrates.
Detailed explanation-3: -Sponges (Porifera) Comb jellies (Ctenophora) Medusozoans and corals (Cnidaria) Acoels (Xenacoelomorpha) Flatworms (Platyhelminthes) Bristleworms, earthworms and leeches (Annelida) Insects, springtails, crustaceans, myriapods, chelicerates (Arthropoda) More items
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