Science 7 Year End Review - Unit A

Science 7 Year End Review - Unit A

Multiple Choice

Which of the following does not provide an example of an interaction between biotic and abiotic objects in an ecosystem?

• A leaf receives light from the sun.

• A worm shelters under a rock.

• A deer drinks water from a stream.

• An ox and oxbird form a mutualistic relationship.

Multiple Choice

Which of the following does not represent a symbiotic relationship?

• A wolf eats a hare.

• Beetles infest a tree for shelter.

• Bees pollinate flowers.

• Suckerfish attach to the bottom of sharks.

Multiple Choice

Which of the following would not be considered a sustainable source of energy?

• Wind power

• Natural gas

• Solar power

• Biofuel

Multiple Choice

Which of the following statements represents why bioinvasive species are harmful to the environment

• They introduce foreign competition, reducing the available resources to native organisms.

• They can remove the nutrients from soil, making it more difficult for plants to get what they need.

• They can sometimes prey on native species with no predators hunting them.

• All of the above.

Multiple Select

Select all the abiotic components below:

• Soil

• Sunlight

• Grass

• Rocks

• Bears

Multiple Choice

Which statement is true about the food web pictured?

• There are no decomposers in this food web.

• There are 3 producers listed.

• The hawk is ONLY a quaternary consumer.

• The arrows in this food web are pointing the wrong direction.

Multiple Choice

According to this food web, which of the following is MOST likely to occur if the population of rabbits in the ecosystem declined dramatically?

• The frog population would increase.

• The owl population would increase.

• The mouse population would decrease.

• The snake population would increase.

Multiple Choice

When it rains, it is which step in the water cycle?

• Collection

• Precipitation

• Evaporation

• Condensation

Multiple Choice

Which biological process helps to DECREASE the amount of carbon dioxide in the air?

• Cellular respiration

• Respiration

• Photosynthesis

• Nitrogen Fixation

Open Ended

What is the difference between biomagnification and bioaccumulation?

Multiple Choice

Which of the following would result in increased competition between the bird species in this ecosystem?

• A disease that kills grasshoppers.

• A disease that wipes out rabbits

• A disease that kills grass.

• A disease that kills foxes.

Multiple Choice

Which of the following is true of food chains and food webs?

• A food chain is more complex than a food web.

• In a food web, an organism can never be more than one type of consumer.

• In a food chain, an organism can be both a producer and a primary consumer.

• In both food chains and food webs the originating source of energy is the same.

Multiple Choice

In the volcanic islands that make up Hawaii, the type of success that is more likely to be seen is:

• Primary succession

• Secondary succession

• Tertiary succession

• None of the above

Open Ended

The use of the product in the image might have what sorts of unintended consequences?

Multiple Choice

In the attached graph, which of the following species would most likely indicate a prey in the ecosystem?

• The blue line

• The red line

• Both the blue line and the red line.

• Neither the blue or the red line.