Question

Identify the water plant that does not have stomata from the following:

• A. Eichhornia
• B. Hydrilla
• C. Water Lily
• D. Pistia

Hint:

Aquatic plants:
• Floating plants (Water Lily, Pistia, Eichhornia) $\rightarrow$ Stomata present on the upper surface.
• Submerged plants (Hydrilla, Vallisneria) $\rightarrow$ No stomata.

Answer 1

The Correct Option is B

Concept: Stomata are tiny pores present on leaves that help in gaseous exchange and transpiration. Submerged aquatic plants generally do not have stomata because gases diffuse directly through their surface.

Step 1: Classify the given plants.

• Eichhornia -- Floating plant; has stomata.
• Hydrilla -- Completely submerged plant; no stomata. \checkmark
• Water Lily -- Floating leaves with stomata on the upper surface.
• Pistia -- Floating plant; has stomata.

Step 2: Final conclusion.
Therefore, the aquatic plant that does not have stomata is \[ \boxed{\text{Hydrilla}.} \]