Question

Organisms which spend their entire lives as plankton are called

• A. Megaplankotn
• B. Meroplankotn
• C. Holoplankton
• D. Nekton

Hint:

Remember:
- Holo = Whole (Planktonic for whole life).
- Mero = Part (Planktonic for only a part of life).

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
Plankton are drifting organisms that cannot swim actively against water currents.
Based on the duration of their planktonic life stage, they are divided into two main categories.

Step 2: Detailed Explanation:
- Holoplankton: Organisms that spend their entire life cycle as plankton, from egg to adult (e.g., copepods, diatoms, dinoflagellates).
- Meroplankton (spelled Meroplankotn in typo): Organisms that spend only a part of their life cycle as plankton, typically their larval or egg stages (e.g., fish larvae, crab zoea).

Step 3: Final Answer:
The correct option is (C).