Aquatic Plants Characteristics and Roles

The video tutorial discusses aquatic plants, which are plants that grow in water environments. It categorizes them into free floating, fixed, and underwater plants. Free floating plants like water hyacinth and duckweed float freely on water due to air-filled cavities. Fixed aquatic plants, such as lotus and water lily, are anchored to the pond bed. Underwater plants like hydrilla contribute to oxygenating water, benefiting aquatic life.

What are aquatic plants primarily known for?

• Surviving in extreme cold

• Growing in deserts

• Thriving in dry areas

• Living in water bodies

Which of the following is a characteristic of free-floating aquatic plants?

• They are rooted in the soil

• They have heavy stems

• They have air-filled cavities

• They grow on land

Which plant is an example of a free-floating aquatic plant?

• Lotus

• Duckweed

• Water lily

• Hydrilla

What is a common feature of fixed aquatic plants?

• They float freely on water

• They grow in deserts

• They are attached to the pond bed

• They have no leaves

Which of the following is a fixed aquatic plant?

• Water hyacinth

• Hydrilla

• Lotus

• Duckweed

What is the role of underwater plants like hydrilla in aquatic environments?

• They produce carbon dioxide

• They increase oxygen content

• They absorb sunlight

• They decrease oxygen levels

Which plant is known for growing underwater?

• Hydrilla

• Duckweed

• Lotus

• Water lily

How do underwater plants like hydrilla benefit fish and other aquatic animals?

• By reducing water temperature

• By providing food

• By blocking sunlight

• By increasing oxygen availability