Question

Match the following:
$\begin{array}{cc}\text{I. Prawns}& \text{a. Skin}\\ \text{II. Frog}& \text{b. Tracheal tubes}\\ \text{III. Insects}& \text{c. Book gills}\\ \text{IV. Limulus}& \text{d. Gills}\end{array}$

• A. I-c, II-b, III-a, IV-d
• B. I-b, II-a, III-c, IV-d
• C. I-d, II-b, III-a, IV-c
• D. I-d, II-a, III-b, IV-c

Answer 1

The correct option is D I-d, II-a, III-b, IV-c

Different animal groups have evolved different respiratory structures as a result of adaptation to their respective habitats.
Prawns, crayfish, etc are arthropods that live in aquatic habitat and have gills as their respiratory device by which exchange of gases happen between their body and water. This type of respiration by the use of gills is known as branchial respiration.
Frogs belong to the class amphibia which generally has three respiratory devices namely skin, buccopharyngeal cavity, and the lungs. Respiration by the skin is called cutaneous respiration.
Insects are arthropods that have tracheal tubes for respiration.
Book gills are a special type of respiratory device which is present in Limulus (King crab).