Arrange the following group of organisms in their increasing number in biodiversity.
(A) Molluscs
(B) Other animal groups
(C) Crustaceans
(D) Insects
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → (C), (A), (B), (D)
(C) Crustaceans — the smallest share among these groups. They have the thinnest slice of the invertebrate pie in the figure.
(A) Molluscs — a larger share than the crustaceans, but still a small slice.
(B) Other animal groups — a larger share than the molluscs. It is made up of all the remaining invertebrate groups together.
(D) Insects — by far the largest share. Insects are the most species-rich group of animals, with more than 70 per cent of all animal species. Out of every 10 animals on earth, 7 are insects.
Note: A similar question was also asked in CUET (UG) 2025 on 14-05-2025 (Slot 2).
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