Echinoderm Examples and Classification — NEET Biology

Correct answer: A — A-iv, B-iii, C-ii, D-i, E-v

The core concept is to match specific arthropod examples with their correct description, role, or feature as provided in the NCERT text. A. Apis (Honey bee) is listed as an "Economically important insect" (4.2.7). Honey bees are known for producing honey. So, A-iv. B. Limulus (King crab) is referred to as a "Living fossil" (4.2.7). Arthropods have "gills" as respiratory organs (4.2.7). So, B-iii. C. Bombyx (Silkworm) is listed as an "Economically important insect" (4.2.7). Silkworms are known for producing silk. So, C-ii. D. Anopheles (Mosquito) is listed under "Vectors – Anopheles, Culex and Aedes (Mosquitoes)" (4.2.7). Arthropods (including insects) use a "tracheal system" for respiration (4.2.7). So, D-i. E. Prawn is listed as an example of Arthropoda (4.2.7). Prawns are aquatic, and "gills" are listed as respiratory organs for arthropods (4.2.7). So, E-v. Combining these, the correct match is A-iv, B-iii, C-ii, D-i, E-v. The final answer is A. A-iv, B-iii, C-ii, D-i, E-v. Recap: Phylum Arthropoda includes a diverse range of organisms with various ecological and economic roles, and distinct respiratory adaptations based on their habitat, as detailed in NCERT.