Question

In a pond, we see plants which are free-floating; rooted–submerged; rooted emergent; rooted with floating leaves. Write the type of plants against each of them.

Plant Name Type

a. Hydrilla

b. Typha

c. Nymphaea

d. Lemna

e. Vallisneria

• A. Rooted-submerged plant
• B. Rooted-submerged plant
• C. Rooted plant with floating leaves
• D. Rooted-emergent plant
• E. Free-floating plant

Answer 1

Answer: (A), (B), (C), (D), (E)

a) Hydrilla: Rooted-submerged :

Hydrilla is a submerged aquatic plant.

$\bullet$ It is rooted in the bed of the water body

$\bullet$ Its branch reaches the surface of the water and tends to form dense mats.

$\bullet$ It is found in lakes, ponds, rivers, reservoirs etc.

Final answer: Rooted-submerged plant

b) Typha: Rooted-emergent:

Typha is an aquatic plant.

$\bullet$ It has fibrous roots present in the substratum of the waterbody and its branches emerge out of the waterbody to absorb maximum sunlight.

$\bullet$ It mainly grows in brackish water while is also found in freshwater.

Final answer: Rooted-emergent plant

c) Nymphaea: Rooted with floating leaves:

Nymphaea is also known as water lily. It is an aquatic plant.

$\bullet$ It has circular shaped floating leaves.

$\bullet$ It is found in ponds and streaming rivers.

Final answer: Rooted plant with floating leaves

d) Lemna: Free-floating:

Lemna is a free-floating aquatic plant commonly known as Duckweeds.

$\bullet$ Its leaves float on the surface of water.

$\bullet$ It has a single root.

$\bullet$ It can be used as a model plant for various studies such as biopharmaceuticals.

Final answer: Free-floating plant

e) Vallisneria: Rooted-submerged:

Vallisneria is a submerged aquatic plant with its roots embedded in the ground of the waterbody.

$\bullet$ It is found in freshwater.

$\bullet$ Its leaves arise from roots in clusters and form dense meadows within the water body.

Final answer: Rooted-submerged plant