Question

Match the following:

• A. A - IV, B - V, C - II, D - III
• B. A - III, B - II, C - V, D - IV
• C. A - I, B - IV, C - V, D - II
• D. A - IV, B - V, C - I, D - III

Hint:

{Heart Chambers:} Fish: 2. Amphibians: 3. Reptiles: 3 (incomplete 4). Birds/Mammals: 4.

Answer 1

The Correct Option is A

Step 1: Match Each Item:

• A. Lamelliform gills: Plate-like gills are characteristic of Elasmobranchs (**Cartilaginous fishes**). Hence, A matches with IV.
• B. Filamentous gills: Pectinate or filamentous gills are characteristic of Teleosts (**Bony fishes**). Hence, B matches with V.
• C. Three chambered heart: Found in Amphibians and most **Reptiles** (except Crocodiles). Hence, C matches with II.
• D. Enucleate RBC: Red blood cells without a nucleus are a distinct feature of **Mammalia** (except camels/llamas which have enucleated but oval RBCs, usually stated as generic mammalian feature). Hence, D matches with III.

Step 2: Sequence:
A - IV, B - V, C - II, D - III.
Step 3: Final Answer:
This corresponds to Option (A).