Biodiversity and its Conservation Question 8

8. Given below is the representation of the extent of global diversity of invertebrates. What groups the four portions (A-D) represent respectively?

[2014]

A B C D
(a) Insects Crustaceans Other animal groups Molluscs
(b) Crustaceans Insects Molluscs Other animal groups
(c) Molluscs Other animal groups Crustaceans Insects
(d) Insects Molluscs Crustaceans Other animal groups
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Answer : d

Hints & Solutions

(d) Arthropoda is the largest phylum of Animalia which includes insects. Over twothirds of all named species on earth are arthropods. They have organ system level of organisation. Mollusca is the second largest animal phylum. They are terrestrial or aquatic (marine or fresh).