- 1. Rainforests are dense forests characterized by high levels of rainfall, lush vegetation, and diverse wildlife. These tropical ecosystems play a crucial role in maintaining Earth's biodiversity and are considered to be one of the most ecologically rich habitats on the planet. Rainforests are home to countless species of plants and animals, many of which are endemic and found nowhere else in the world. These ecosystems also provide essential ecosystem services such as regulating the climate, producing oxygen, and storing carbon. However, rainforests are under threat from deforestation, logging, and other human activities, leading to the loss of biodiversity and the disruption of vital ecological processes.
What percentage of the world's plant and animal species are found in rainforests?
A) Over 75%.
B) Less than 10%.
C) Around 25%.
D) Approximately 50%.
- 2. What is the process of converting carbon dioxide into oxygen by plants called?
A) Pollination.
B) Transpiration.
C) Photosynthesis.
D) Respiration.
- 3. Which rainforest is the largest in the world?
A) Tongass Rainforest.
B) The Amazon Rainforest.
C) Congo Rainforest.
D) Daintree Rainforest.
- 4. Which continent is home to the majority of the world's rainforests?
A) Africa.
B) Asia.
C) South America.
D) Australia.
- 5. What is the term for the natural region of tall, dense forest in the Amazon Basin?
A) Savanna.
B) Selva.
C) Steppe.
D) Taiga.
- 6. What is the term for the continuous recycling of nutrients in a rainforest ecosystem?
A) Deforestation.
B) Primary succession.
C) Ecosystem stability.
D) Nutrient cycling.
- 7. What is the term for the variety of life in a particular habitat or ecosystem?
A) Acidification.
B) Biodiversity.
C) Erosion.
D) Desertification.
- 8. Which part of the rainforest is home to the majority of plant and animal species?
A) Forest floor.
B) Canopy.
C) Understory.
D) Emergent layer.
- 9. What is the term for the process by which leaves release water vapor into the atmosphere?
A) Photosynthesis.
B) Condensation.
C) Evapotranspiration.
D) Transpiration.
- 10. Which layer of the rainforest receives the most sunlight?
A) Canopy layer
B) Emergent layer
C) Forest floor
D) Understory layer
- 11. Approximately what percentage of the world's oxygen is produced by rainforests?
A) 10%
B) 20%
C) 5%
D) 50%
- 12. Which of the following is a threat to rainforests caused by human activities?
A) Natural wildfires
B) Deforestation
C) Volcanic eruptions
D) Climate change
- 13. What is the term for the layer of permanently frozen subsoil in the rainforest?
A) Litter
B) Compost
C) Permafrost
D) Humus
- 14. Which of the following is a famous bird species found in rainforests known for its colorful beak?
A) Ostrich
B) Toucan
C) Penguin
D) Vulture
- 15. Which of the following is a type of rainforest characterized by fog and cool temperatures at high altitudes?
A) Tropical rainforest
B) Mangrove forest
C) Temperate rainforest
D) Cloud forest
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