Question

MCQ
which one of the following is an amphibious plant
1.polygonum
2.Hydrilla
3.Casuarina
4.Wolffia
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Answer 1

Hydrilla is an amphibious plant. Hydrilla roots are growing in the mud and other parts grow up through the water and out in the air. That's why hydrilla is an amphibious plant.

• Hydrilla related to the species Hydrilla Verticillata.

• Hydrilla is an invasive species it has become the most serious threat to the aquatic species.

• Hydrilla is a fast-growing, herbaceous perennial plant. It has long slender stems that can grow up to 7 meters in length.

• Hydrilla is harmful to both aquatic and local ecosystems.

Answer 2

Amphibious plant is-Hydrilla

Explanation:

• It is called amphibious plant as they can survive both in aquatic as well as land region.
• It has some special features like leaves are located and arranged in the whorls are 5-20 mm long.
• They contain small spines at the margin of leaves.
• The plant is mainly monoecious containing female and male flowers.But sometimes it can be dioecious.
• Reproduction takes place through fragmentation.
• Their body is highly resistant to salinity.