Biodiversity

First Name

Last Name

Class Period

• 1st
• 2nd
• 4th
• 5th
• 6th

1. True or False. An increase in diversity of an ecosystem decreases the chance of survival.

• True
• False

2. Consider the two ecosystems represented by the two food webs above. Which of the two ecosystems best represents a healthier or more diverse ecosystem?

• Forest Food Web
• Grassland Food Web

3. Which ecosystem would be more likely to survive if a disease killed the grasses?

• Grassland Food Web
• Forest Food Web

4. In the Forest food Web, if the deer population is affected by disease and dies off, there would be ____.

• more food
• about the same food
• less food
• none of the above

5. ____ refers to an ecosystems health and ability to survive over a long period of time.

• carrying capacity
• biodiversity
• sustainability
• biosphere

6. True or False. Biodiversity ensures that ecosystems survive and function to maintain a balance on Earth.

• True
• False

7. An ecosystem that is not sustainable can break down when a natural disaster occurs. This can lead to organisms in the ecosystem either leaving the area or dying off. Increased biodiversity results in a more sustainable ecosystem because —

• a greater number of plant species means that there is less barren land
• a greater variety of species present allows more organisms to adapt after changes occur
• the transition area between two ecosystems is narrower
• there are fewer species to be affected by environmental stresses