Question

Match the following characteristics with their classes: (A) Jacobson's organ, (B) Pneumatic bones, (C) Vocal sacs, (D) Corpora quadrigemina (I) Aves, (II) Amphibia, (III) Mammalia, (IV) Reptilia

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

Hint:

Pneumatic = Light/Aves (Birds need to fly!).

Answer 1

The Correct Option is A

Step 1: Understand the matching.
Each feature belongs to one vertebrate class. We match the special organ or structure to the class that owns it.

Step 2: Place Jacobson's organ.
Jacobson's organ is a smell-detecting structure in the roof of the mouth. It is well developed in reptiles, especially snakes. So A goes with Reptilia (IV).

Step 3: Place pneumatic bones.
Pneumatic bones are hollow and filled with air to reduce body weight for flying. These are found in birds. So B goes with Aves (I).

Step 4: Place vocal sacs.
Vocal sacs are air pouches used by male frogs to make loud mating calls. These belong to amphibians. So C goes with Amphibia (II).

Step 5: Place corpora quadrigemina.
Corpora quadrigemina are four rounded bodies in the midbrain. This four-part structure is a special feature of mammals. So D goes with Mammalia (III).

Step 6: Read the final match.
The match is A-IV, B-I, C-II, D-III, which is the first option.
\[ \boxed{\text{A-IV, B-I, C-II, D-III}} \]