Biology Spring 2023

 Which biome is more likely to survive a change in the environment?

• High (rich) biodiversity
• Low (poor) biodiversity

What does Darwin's theory of evolution suggest?

• species change over time

• extinct species are not related to living species

• different species can interbreed

• animals that look alike are most closely related

The variety of life in the world, a habitat, or an ecosystem

• biodiversity
• ecosystem
• mutations
• diversity

Below is an example of a simple food chain.

Acorn → Squirrel → Fox → Mountain Lion 

What will most likely happen if squirrels are removed from the food chain?

• The fox will eat acorns
• The fox population will decrease
• The trees will produce fewer acorns.
• The mountain lion population will increase

In a forest ecosystem, a food chain might look like this:
green plants → rabbit → fox → panther

If the green plants are destroyed in a forest fire, which short-term effect will this have on the organisms in this food chain?

• There would be fewer rabbits for the foxes to eat. 
• The panthers would have to begin to eat green plants.
• There would be an increase in the fox population
• There would be more green plants for the rabbits to eat

How much energy moves from trophic level to trophic level?

• 100%

• 50%

• 1%

• 10%

Which type of relationship happens because of limited resources?

• Competition

• Symbiotic relationships

• Predator / Prey

Which type of relationship happens to limit populations size?

• Competition

• Symbiotic relationships

• Predator / Prey

How is the predator population controlled through a predator prey relationship?

• Predators lose energy as they hunt their prey

• Prey get smarter than the predators so they don't get eaten

• As prey become harder to find, the predator population declines

• Predators find other food sources so they can continue to grow their population

a relationship between two species that benefits both of them

• mutualism

• commensalism

• parasitism

• competition