NEET 2020 · BiologyArthropodaPrevious Year Question
Match the following columns and select the correct option. Column-I (a) Gregarious, polyphagous pest (b) Adult with radial symmetry and larva with bilateral symmetry (c) Book lungs (d) Bioluminescence Column-II (i) Asterias (ii) Scorpion (iii) Ctenoplana (iv) Locusta Choose the correct option from those given below.
Answer: (D) (a)-(iv); (b)-(i); (c)-(ii); (d)-(iii). Locusta (locust) is the gregarious pest of phylum Arthropoda, so (a)-(iv).
- A.(a)-(iii); (b)-(ii); (c)-(i); (d)-(iv)
- B.(a)-(ii); (b)-(i); (c)-(iii); (d)-(iv)
- C.(a)-(i); (b)-(iii); (c)-(ii); (d)-(iv)
- D.(a)-(iv); (b)-(i); (c)-(ii); (d)-(iii)✓
Correct Answer
(D) (a)-(iv); (b)-(i); (c)-(ii); (d)-(iii)
Solution & Explanation
Locusta (locust) is the gregarious pest of phylum Arthropoda, so (a)-(iv). In echinoderms such as Asterias (star fish) the adult is radially symmetrical while the larva is bilaterally symmetrical, so (b)-(i). Scorpion is an arachnid whose respiratory organs are book lungs, so (c)-(ii). Bioluminescence is well-marked in ctenophores like Ctenoplana, so (d)-(iii). Hence option D. NCERT Reference: Page 44, line 29
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