Which of the following pairs of organisms and their characteristic features is wrongly paired?

Earthworm-annelida, invertebrata, setae

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Butterfly-insecta, invertebrata, arthropoda

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Snail-annelida, invertebrata, muscular foot

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Paramecium-cilia, protozoa, lacks cell wall

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Solution

The correct option is A Snail-annelida, invertebrata, muscular foot
The earthworm is an invertebrate which belongs to the phylum Annelida. They have setae which are used in locomotion.
The butterfly is an invertebrate and grouped in insects. They have jointed appendages and so they are grouped in arthropods.
Snail belongs to the mollusc. It is a gastropod which has a soft body covered with a hard calcareous exoskeleton.
Paramecium has many cilia and they lack a cell wall. They belong to the group of protozoans.
Thus, the correct answer is option C.

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