DIRECTION: Select the best answer from the given choices. WRITE only the letter of your choice on the
BLANK SPACE before the item number on this sheet.
1. Which of the following refers to biodiversity?
A. The rate of species declines
C. Extinct species
B. The variety of species on Earth
D. Nonrenewable resources
2. Which is not a benefit of biodiversity?
A. Medicine B. Agriculture C. Deforestation
D. Ecotourism
3. An endangered species means
A. an organism brought to a place where it has not lived before.
B. a species in danger of extinction.
C. a species growing on public land.
D. a species that have disappeared entirely.
4. The level of biodiversity that involves a variety of habits and communities is
A. species diversity
C. genetic diversity
B. population diversity.
D. ecosystem diversity
5. In what part of the world is the greatest number of extinctions occurred?
A. In deserts
C. In tropical rain forest
B. In the Arctic
D. In Europe and the United States
6. Why is biodiversity important to ecosystems?
A. It allows animals to feed permanently from one type of plant.
B. It increases at each level of the food chain.
C. It helps populations adapt to ecological changes.
D. It reduces the number of insects in a given ecosystem.
7.
species is a non-native plant/animal introduced accidentally or intentionally by humans.
A. Endangered B. Extinct
C. Invasive (exotic)
D. Threatened
8. Why are invasive species a threat to biodiversity?
A. They can outcompete native organisms for their resources.
B. They can be harmful to humans.
C. They can cause harm to the environment.
D. All statements are true.
9. Which of the habitat where many critical biodiversity hotspots located?
A. Desert environments.
C. Islands, tropical rain forests and coastal areas.
B. Polar environments.
D. Cities and developed areas of the world.
10. When animals are placed in controlled, restrictive environments, they
A. may have difficulty meeting their basic survival needs.
B. become immune to infectious diseases that are common in the wild.
C. have a low rate of genetic disorders because their gene pool is large.
D. are less likely to compete.
diversity affect ecosysteme?​