Question

Match List I with List II
List I (Group): A. Freshwater mussel, B. Crab, C. Lobster, D. Freshwater prawn
List II (Larval stage): I. Megalopa, II. Puerulus, III. Mysis, IV. Glochidium, V. Zoea
Choose the correct answer from the options given below:

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

Hint:

Unique Larvae Cheat Sheet:
- Glochidium = Mussel (Parasitic on fish).
- Megalopa = Crab.
- Puerulus/Phyllosoma = Lobster.
- Zoea/Mysis = Prawn/Shrimp.

Answer 1

The Correct Option is B

Step 1: Understanding the Question:
The question requires matching various aquatic invertebrate groups with their characteristic or unique larval stages.
Detailed Explanation:

• Freshwater Mussel (A): Freshwater mussels (Lamellidens) have a very unique parasitic larval stage called the Glochidium (IV). These larvae must attach to the gills or fins of a host fish to complete their development.

• Crab (B): Crabs typically go through multiple zoea stages followed by a final, more adult-like larval stage called the Megalopa (I), characterized by a prominent abdomen.

• Lobster (C): After the planktonic phyllosoma stages, spiny lobsters reach a post-larval stage known as the Puerulus (II). It is transparent and begins the transition to a bottom-dwelling life.

• Freshwater Prawn (D): Freshwater prawns (Macrobrachium) go through several planktonic stages. The early stages are termed Zoea (V). (Note: They also have a mysis stage, but Zoea is the most fundamental matching here given the options).

Step 2: Final Answer:
The correct matching is: A-IV, B-I, C-II, D-V. This corresponds to Option (B).