Populations & Resources Chapter 1 Quiz

Which of the following is a LIVING part of an ecosystem?

• Mountains

• Water

• Sun

• Trees

What organism is the main focus of our Amplify unit story?

• Honeybees

• Moon Jellies

• Weebugs

• Furbils

What is the best definition of an organism?

• Many individuals of the same species living in the same area.

• All of the living and nonliving things in a particular area.

• All living things, such as plants, animals, and bacteria.

• A creature that is large enough to see without using a microscope.

Which of the following is a NONLIVING part of an ecosystem?

• Pebbles

• Flowers

• Jellyfish

• Plankton

A large population of ducks lives in an area with a lake. In the last 40 years, the size of the duck population has STAYED THE SAME. What must be TRUE about the duck population during the last 40 years?

• The number of ducks that were born was the same as the number of ducks that died.

• No ducks were born and no ducks died.

• Humans started protecting the duck population so they stopped dying.

• The ducks did not have any baby ducks during these years.

When a populations is known to be STABLE, _______________.

• there are more births.

• it stays mostly the same, over time.

• there are more deaths.

• there are no new births or deaths happening.

A population of bluefish lives in the Gulf of Mexico. Over the last 50 years, the size of the bluefish population has DECREASED. What best explains the DECREASE in the size of the bluefish population?

• A lot of bluefish died and no new bluefish were born.

• More bluefish were born than died.

• Fewer bluefish were born than died.

• The bluefish population is always decreasing because bluefish are always being eaten.

If the population size STAYS STABLE, does this mean that NO organisms have been born or died?

• Yes, because if organisms were born or died that would change the number of organisms in the population.

• No, because if some organisms are born and the same number of organisms die, then the total population size can stay constant.

• Yes, because some organisms never die, so they don't need to reproduce.

• No, because all organisms will give birth and then die.

A large population of squirrels lives in a forest. In the last 50 years, the size of the squirrel population has STAYED THE SAME. What must be true about the squirrel population during the last 50 years?

• No squirrels were born and no squirrels died.

• Humans started protecting the squirrel population so they stopped dying.

• The squirrels did not have any baby squirrels during these years.

• The number of squirrels that were born was the same as the number of squirrels that died.

True or False: Nonliving and dead mean the same thing.

• True

• False