Question

Glow worm is a/an
A) Annelid
B) Helminth
C) Insect
D) Mollusc

Answer 1

Hint: Glow worm or glow-worm is a common name for different groups of female insect larvae and adult larvae that glow through bioluminescence. They include the common European glow-worm and other members of the Lampyridae, but bioluminescence also occurs in the Elateridae, Phengodidae and Gymnophthalmidae families among the beetles, as well as in the Arachnocampa, Keroplatidae and Keroplatidae genera and Orfelia among keroplatidae fungus gnats.

Complete answer:
Four beetle families are bioluminescent. The wingless larvae form females and larvae of these bioluminescent species are usually referred to as "glowworms." Winged males may or may not exhibit bioluminescence as well. They can be emitted as flashes or as a constant glow, and usually range in color from green, yellow, to orange.

The families are closely related, and they are all members of the beetle superfamily, Elateroidea. Phylogenetic analyzes have shown that bioluminescence may have a single evolutionary origin in the Lampyridae, Phengodidae and Rhagophthalmidae families, but is likely to have arisen independently in the Elateridae family.

A group of insect larvae and adult female larvae that glow through bioluminescence are commonly referred to as glowing worms like fireflies as insects of the Coleoptera order.

Thus, the answer is option ‘C’ i.e, ‘Insect’.

Note: Three genera of fungus gnats are bioluminescent, known as "glowworms" in their larval stage. They're producing a blue-green light. The larvae are spinning sticky webs to catch food. They are found in caves, overhangs, rock cavities, and other wet, sheltered areas. They are usually classified as Keroplatidae, but this is not universally accepted and some authors place them under Mycetophilidae instead. Despite similarities in function and appearance, the bioluminescent systems of the three genera are not homologous and are thougolved separately.