Seagrass Meadows: Underwater Grasslands

Description: Seagrass Meadows: Underwater Grasslands
Number of Questions: 15
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Tags: coastal and marine ecosystems seagrass meadows
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Which of the following is not a characteristic of seagrass meadows?

  1. They are found in shallow coastal waters.

  2. They are composed of flowering plants.

  3. They provide habitat for a variety of marine life.

  4. They are a source of food for humans.


Correct Option: D
Explanation:

Seagrass meadows are not a direct source of food for humans, although they do support a variety of marine life that is consumed by humans.

What is the primary role of seagrass meadows in the marine ecosystem?

  1. They provide habitat for a variety of marine life.

  2. They filter pollutants from the water.

  3. They produce oxygen through photosynthesis.

  4. They help to stabilize the shoreline.


Correct Option: A
Explanation:

Seagrass meadows provide habitat for a variety of marine life, including fish, invertebrates, and sea turtles. They also provide food and shelter for juvenile fish and other marine animals.

Which of the following is not a type of seagrass?

  1. Thalassia testudinum

  2. Zostera marina

  3. Posidonia oceanica

  4. Ruppia maritima


Correct Option: D
Explanation:

Ruppia maritima is a type of aquatic plant, but it is not a seagrass. Seagrasses are flowering plants that grow in marine environments, while Ruppia maritima is a flowering plant that grows in freshwater or brackish water environments.

What is the main threat to seagrass meadows?

  1. Climate change

  2. Pollution

  3. Overfishing

  4. Habitat destruction


Correct Option: D
Explanation:

Habitat destruction is the main threat to seagrass meadows. This can occur through a variety of human activities, such as coastal development, dredging, and pollution.

What can be done to protect seagrass meadows?

  1. Reduce pollution

  2. Protect coastal habitats

  3. Educate the public about the importance of seagrass meadows

  4. All of the above


Correct Option: D
Explanation:

All of the above actions can be taken to protect seagrass meadows. Reducing pollution, protecting coastal habitats, and educating the public about the importance of seagrass meadows can all help to ensure the survival of these important ecosystems.

What is the ecological significance of seagrass meadows?

  1. They provide habitat for a variety of marine life.

  2. They help to stabilize the shoreline.

  3. They filter pollutants from the water.

  4. All of the above


Correct Option: D
Explanation:

Seagrass meadows provide habitat for a variety of marine life, help to stabilize the shoreline, and filter pollutants from the water. They are important ecosystems that play a vital role in the health of coastal environments.

Which of the following is a common species of seagrass found in the Indian Ocean?

  1. Thalassia testudinum

  2. Zostera marina

  3. Posidonia oceanica

  4. Cymodocea serrulata


Correct Option: D
Explanation:

Cymodocea serrulata is a common species of seagrass found in the Indian Ocean. It is a perennial plant that can grow up to 1 meter in height. It has long, narrow leaves and produces small, white flowers.

What is the role of seagrass meadows in the carbon cycle?

  1. They absorb carbon dioxide from the atmosphere.

  2. They release carbon dioxide into the atmosphere.

  3. They have no role in the carbon cycle.

  4. They both absorb and release carbon dioxide.


Correct Option: D
Explanation:

Seagrass meadows both absorb and release carbon dioxide. They absorb carbon dioxide through photosynthesis and release carbon dioxide through respiration. However, they absorb more carbon dioxide than they release, so they are a net sink for carbon dioxide.

Which of the following is not a benefit of seagrass meadows?

  1. They provide habitat for a variety of marine life.

  2. They help to stabilize the shoreline.

  3. They filter pollutants from the water.

  4. They are a source of food for humans.


Correct Option: D
Explanation:

Seagrass meadows are not a direct source of food for humans, although they do support a variety of marine life that is consumed by humans.

What is the main threat to seagrass meadows in India?

  1. Climate change

  2. Pollution

  3. Overfishing

  4. Habitat destruction


Correct Option: D
Explanation:

Habitat destruction is the main threat to seagrass meadows in India. This can occur through a variety of human activities, such as coastal development, dredging, and pollution.

What can be done to protect seagrass meadows in India?

  1. Reduce pollution

  2. Protect coastal habitats

  3. Educate the public about the importance of seagrass meadows

  4. All of the above


Correct Option: D
Explanation:

All of the above actions can be taken to protect seagrass meadows in India. Reducing pollution, protecting coastal habitats, and educating the public about the importance of seagrass meadows can all help to ensure the survival of these important ecosystems.

What is the ecological significance of seagrass meadows in India?

  1. They provide habitat for a variety of marine life.

  2. They help to stabilize the shoreline.

  3. They filter pollutants from the water.

  4. All of the above


Correct Option: D
Explanation:

Seagrass meadows in India provide habitat for a variety of marine life, help to stabilize the shoreline, and filter pollutants from the water. They are important ecosystems that play a vital role in the health of coastal environments in India.

Which of the following is a common species of seagrass found in the Andaman and Nicobar Islands?

  1. Thalassia testudinum

  2. Zostera marina

  3. Posidonia oceanica

  4. Halophila ovalis


Correct Option: D
Explanation:

Halophila ovalis is a common species of seagrass found in the Andaman and Nicobar Islands. It is a small, perennial plant that can grow up to 15 centimeters in height. It has oval-shaped leaves and produces small, white flowers.

What is the role of seagrass meadows in the carbon cycle in the Indian Ocean?

  1. They absorb carbon dioxide from the atmosphere.

  2. They release carbon dioxide into the atmosphere.

  3. They have no role in the carbon cycle.

  4. They both absorb and release carbon dioxide.


Correct Option: D
Explanation:

Seagrass meadows in the Indian Ocean both absorb and release carbon dioxide. They absorb carbon dioxide through photosynthesis and release carbon dioxide through respiration. However, they absorb more carbon dioxide than they release, so they are a net sink for carbon dioxide.

Which of the following is not a benefit of seagrass meadows in the Indian Ocean?

  1. They provide habitat for a variety of marine life.

  2. They help to stabilize the shoreline.

  3. They filter pollutants from the water.

  4. They are a source of food for humans.


Correct Option: D
Explanation:

Seagrass meadows in the Indian Ocean are not a direct source of food for humans, although they do support a variety of marine life that is consumed by humans.

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