EVERYDAY SCIENCE

Detailed explanation-1: -Arthropods lack locomotory cilia, even in the larval stages, probably because of the presence of the exoskeleton. The body is usually segmented, and the segments bear paired jointed appendages, from which the name arthropod (“jointed feet”) is derived.

Detailed explanation-2: -Jointed appendages allowed arthropods to have much greater flexibility and range of movement. Advantages of having a hard outer layer are protection, water retention, structural support (particularly on land), and counterforce for attachment and contraction of muscles.

Detailed explanation-3: -Why is the name arthropods given? The term “arthropod” means “jointed legs”. The phylum included invertebrates with an exoskeleton and jointed legs, hence named, arthropoda.

Detailed explanation-4: -There are over 800, 000 named species in the Phylum Arthropoda, named from the Greek arthros (= jointed) and poda (= foot), including the familiar arachnids, crustaceans, and insects, together with a host of less familiar critters, like centipedes, millipedes and sea spiders. All arthropods have jointed appendages.

Detailed explanation-5: -Ans. The term “arthropod” refers to a creature with “jointed legs.” Arthropods are invertebrates that have an exoskeleton and jointed legs, which is why they were given this name.