Coral reefs form when coral polyps, small marine animals, attach themselves to rocks or other hard surfaces on the ocean floor. Over time, these polyps multiply and create colonies. They secrete calcium carbonate, which builds up and forms the reef structure. As the coral grows, it provides a habitat for a diverse array of marine life.
Contents
- MCQs
- Fill in The Blanks
- 1. Some animals migrate to find better _______ sources.
- 2. Migration helps animals survive and thrive in their ________ habitats.
- 3. Animals migrate to find suitable _______ grounds.
- 4. Why do some animals migrate? To escape harsh ________ conditions.
- 5. Migration is the regular seasonal movement of ________ from one place to another.
- True / False
- 1. Coral reefs are made up of living organisms called coral polyps (True/False)
- 2. Coral reefs are formed by volcanic eruptions (True/False)
- 3. Coral reefs can only form in cold water (True/False)
- 4. Coral reefs provide a habitat for a diverse range of marine life (True/False)
- 5. Coral reefs are not affected by human activities (True/False)
MCQs
1. How do coral polyps get their food?
A. By hunting small fish
B. Through photosynthesis performed by algae living in their tissues
C. By filtering nutrients from the water
D. Eating plants on the ocean floor
2. What is the importance of coral reefs to marine life?
A. They provide a hiding place from predators
B. They offer a rich source of nutrients
C. They serve as breeding and nursery grounds for many marine species
D. All of the above
3. Which of the following factors contribute to the growth of coral reefs?
A. Warm water temperatures
B. High salinity levels
C. Clearwater
D. All of the above
Fill in The Blanks
Choose from These Words: food, natural, breeding, weather, and animals.
1. Some animals migrate to find better _______ sources.
2. Migration helps animals survive and thrive in their ________ habitats.
3. Animals migrate to find suitable _______ grounds.
4. Why do some animals migrate? To escape harsh ________ conditions.
5. Migration is the regular seasonal movement of ________ from one place to another.
True / False
1. Coral reefs are made up of living organisms called coral polyps (True/False)
2. Coral reefs are formed by volcanic eruptions (True/False)
3. Coral reefs can only form in cold water (True/False)
4. Coral reefs provide a habitat for a diverse range of marine life (True/False)
5. Coral reefs are not affected by human activities (True/False)
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