Adaptations in Aquatic Plants

Q. Which of the following adaptations help aquatic plants to float in water?

1. Presence of submerged roots.
2. Air spaces in the stem and other plant parts.
3. Waxy coating on the leaf surfaces.
4. Well developed root system.

Q. Which of the following are true for fungi?

1. Fungi do not have chlorophyll and cannot perform photosynthesis.
2. All fungi are parasitic in nature.
3. Fungi obtain food from starchy materials such as bread.
4. Fungi possess root like fibres, which help them in food absorption.

Q. Which of the following are true for fungi?

1. Fungi do not have chlorophyll and cannot perform photosynthesis.
2. All fungi are parasitic in nature.
3. Fungi obtain food from starchy materials such as bread.
4. Fungi possess root like fibres, which help them in food absorption.

Q.

Differentiate between Floating aquatic plant and fixed aquatic plant.

Q.

Water is absorbed by the seeds mainly through _______.

1. micropyle

2. entire surface

3. hilum

4. cotyledons

Q. Which of the following is not an adaptation of leaves in submerged aquatic plants?

1. Long leaves
2. Thin leaves
3. Flexible leaves
4. Rigid leaves

Q. Why are the leaves of Vallisneria thin and long?

1. To help the leaves grow faster.
2. To help the leaves float in water.
3. To minimise the damage by strong water currents.
4. To maximise the absorption of sunlight.

Q.

Does scaling hurt the fish?

Q.

Identify error in the given statements:

Roots have air chambers that allow aquatic plants to float on water.

Q. Select the part of the fish, which helps it change direction while swimming.

1. 
2. 
3. 
4. 
5. 

Q.

Which one of the following plants float on water?

1. Banyan
2. Lotus
3. Cactus
4. Pitcher

Q.

Why are the leaves of Vallisneria thin and long?

1. To help the leaves grow faster
2. To help the leaves float in water
3. To minimize the damage by strong water currents
4. To maximize the absorption of sunlight

Q. Long leaves in aquatic plants such as Vallisneria help in maximising the absorption of sunlight.

1. False
2. True

Q. The thin leaves in Vallisneria help the plant to withstand strong water currents.

1. False
2. True

Q. What kind of leaves do plants that grow under water have?

Q. Choose the freshwater sources?

1. Ocean
2. Lake
3. Pond
4. Glacier
5. Sea
6. River
7. Goundwater
8. Stream

Q.

Which of the following reason(s) make plants (both terrestrial and aquatic) important for the survival of all life forms?

1. They produce food for other living organisms.

2. They fill up all the empty spaces.

3. They produce carbon dioxide.

4. They produce oxygen.

Q.

Which of the following is an adaptation of floating plants?

1. The stem is very rigid and hard.

2. Leaves are absent.

3. Roots are poorly developed.

4. Leaves lack stomata.

Q. The roots of many aquatic plants are covered with a waxy layer.

1. False
2. True

Q. Water easily trickles off lotus leaves. Why?

1. Air spaces are present in the leaves.
2. Their leaves are thin surfaced.
3. Their leaves have an oily surface.
4. Leaf surface is covered with dead cells.

Q.

describe adaptation in water plants?