Adaptations of Aquatic Plants

Q. Which of the following adaptations can be seen in a lotus plant?

1. Air spaces are present in stem and petioles.
2. Spines instead of leaves.
3. Leaves are thin and coated with a waxy layer.
4. Stems are hollow and flexible.

Q. What is the difference between hydrilla and lotus?

1. Hydrilla has very long roots whereas lotus does not.
2. Hydrilla is present at the water surface but lotus is present under water.
3. Hydrilla is present under water but lotus is present on the water surface.
4. Hydrilla is grown on land but lotus is grown in water.

Q.

Why in floating aquatic plants, stem is thin and flexible?

Q.

What happens when diatoms die?

Q. Neha comes across an animal having a streamlined and slippery body. What is the habitat of the animal?

1. Grassland
2. Water
3. Mountain
4. Desert

Q.

Are diatoms good or bad?

Q. Which among the following area in India has the largest number of endemic plant species?

1. Himalayan Region
2. Malabar Region
3. Gangetic Plains
4. Western Ghats

Q. Match the terms to these definitions.
Trypanosome, euglenoid, formaminiferan, isogamy, plankton, plasmodial slime mold, Protista, pseudopod, sporozoan, trichocyst, dinoflagellate, diatoms
.......... freshwater or marine unicellular protist with a cell wall consisting of two silica-impregnated walls.

Q. protist show mixotrophic mode of nutrirtion ?

Q. Which adaptation is not found in aquatic plants?

1. Conducting tissue system is under developed
2. Root system well developed
3. Plants covered with mucilage
4. Presence of arenchyma in plant organs

Q. is hydrilla an under water plant