Question

Which of the following is an aquatic weed?

• A. Typha
• B. Pistia
• C. Cyperus
• D. Hydrilla

Hint:

Aquatic weeds:
- Hydrilla: Submerged aquatic weed.
- Pistia: Water lettuce (floating).
- Eichhornia: Water hyacinth (floating).
- Typha: Cattail (wetland).

Answer 1

The Correct Option is D

Step 1: Understanding the Question:
This question tests knowledge of aquatic weeds.

Step 2: Detailed Explanation:
Hydrilla (Hydrilla verticillata) is a submerged aquatic weed.
It grows in freshwater bodies and is a major weed in ponds, lakes, and irrigation canals.
Typha (A): A wetland plant (cattail), not a submerged aquatic weed.
Pistia (B): Water lettuce (floating aquatic plant).
Cyperus (C): A sedge weed (terrestrial or wetland).
Thus, Hydrilla is the aquatic weed.

Step 3: Final Answer:
Thus, Hydrilla is an aquatic weed, which corresponds to option (D).
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