EVERYDAY SCIENCE

SCIENCE

PLANT KINGDOM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which phyla’s key characteristics are “soft bodied” or “muscled foot” and most have a shell?
A
Mollusca
B
Cnidarians
C
Echinoderms
D
Arthropods
Explanation: 

Detailed explanation-1: -The animals belonging to the phylum Mollusca have soft-bodies, triploblastic and bilaterally symmetrical and coelomate.

Detailed explanation-2: -The phylum Mollusca is defined by several special characteristics. These defining characteristics include a mantle with a mantle cavity, a shell (except where lost), visceral mass, foot, and radula. The odontophore is in the mouth of most mollusks and it supports the radula (a ribbon of teeth).

Detailed explanation-3: -mollusk, also spelled mollusc, any soft-bodied invertebrate of the phylum Mollusca, usually wholly or partly enclosed in a calcium carbonate shell secreted by a soft mantle covering the body.

Detailed explanation-4: -Soft-bodied invertebrates, mollusks include slugs, snails, octopuses, squid, clams, and mussels. Most mollusks have SHELLS to protect them.

Detailed explanation-5: -Mollusca: Mollusca is the second largest phylum of invertebrate animals after Arthropoda. Organisms belonging to this phylum have a soft and unsegmented body. The dorsal and ventral sides of the body can be distinguished and are found in marine and freshwater habitats.

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