Life science benchmark review

What are the two ways sensory receptors respond to stimuli?

• An immediate AND delayed action.

• Skip immediate reaction and respond with a secondary action

• Input is received without a response

• Responds with an immediate reaction and a memory is stored

What do sense receptors do?

• Send information to your brain so your body can take in information and respond appropriately.

• Send information to your muscles so you can look strong

• Send information to your stomach so you will know when you eat good food.

• None of the above

How does memory help guide the actions of an animal?

• Animals can remember things that have happened long ago.

• Memories are stored in the brains of most animals.

• Animals can avoid actions that have been harmful to them in the past.

• Memories will not be passed on from parents to offspring.

Which of the following would be the most likely effect, if there were a sudden increase in the cricket population?

• There would be a decrease in the small bird population.

• There would be a decrease in the grass/flowers population.

• There would be a decrease in the mice population.

• There would be an increase in the grass/flowers population.

In this food chain, what will happen if the frogs become extinct?

• The snakes will increase.
• The grasshoppers will decrease.
• The eagles will remain the same.
• The grasshoppers will increase.

How do producers obtain energy?

• They conduct photosynthesis.
• They consume plants.
• They consume primary consumers.
• They consume secondary consumers.

Where does the rabbit get its energy from?

• snake

• shrub

• cricket

• robin

Why might an organism have more than one arrow coming from them in a food web?

• More than one organism may eat them. 
• They may eat more than one other organism. 
• This organism gets its energy from multiple sources. 
• They have no resources available to them.

If the yellow perch population were to increase what would happen to the algae?

• The algae population would increase

• The algae population would decrease

• The algae would be unaffected

• It would cause a forest fire

What effect does bird extinction have on an ecosystem?

• deer and other primary consumers lose food sources.

• producers decrease because of lost food sources

• humans populations increase without bird populations.

• Insect populations increase without birds eating them