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Animal Kingdom — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYAnimal Kingdom1 Mark
Question
Mention one example each for animals with chitinous exoskeleton and those covered by a calcareous shell.
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Answer

Every living form maintains a proper shape, size and structure. In multicellular lower organisms the shape of body is maintained by certain biological materials like chitin and calcium substances. Chitinous exoskeleton is the characteristic feature of arthropods. (e.g., cockroach, termite. wasp) whereas, calcareous shell is present in mollusks (gastropods). (e.g., snail and slugs). 

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