Populations and Ecosystems

A

100

A major problem with humans clearing the land is... a) decreased habitat for animals b) increased water runoff c) increased pollution in water supplies d) all of the above

d) all of the above

200

A body of water shallow enough to allow plant roots to reach the bottom is called a.... a) pond b) lake c) river d) ocean

a) pond

300

A pond and a lake are different because... a) a pond is bigger and more shallow b) a pond is smaller and deeper c) a lake is larger and deeper d) a lake is smaller and deeper

c) a lake is larger and deeper

400

All of the following are factors that affect the producers in a community except... a) sunlight b) presence of worms c) type of soil d) water availability

b) presence of worms

500

Clearing a forest to build a new housing development will most likely result in red-cockaded wood peckers.... a) having more babies b) losing parts of their habitats c) increasing their overall production d) maintaining their current nesting sites

b) losing parts of their habitats

B

100

As more people move to the beach, the sea turtle population has declined. What is most likely the cause of this decline? a) the turtles have less to eat b) they cannot swim as well c) habitat loss due to new houses d) none of the above

c) habitat loss due to new houses

200

_______--> grasshopper --> snake --> hawk a) mouse b) spider c) prairie grass d) mushroom

c) prairie grass

300

grass -->____________ --> lion a) shrub b) light c) water d) zebra

d) zebra

400

light --> _____________ --> deer a) zebra b) water c) light d) shrub

d) shrub

500

Which of the following is NOT a way that people turn healthy soil into barren desert? a) terrace farming b) logging c) overgrazing d) overfarming

a) terrace farming

C

100

Vultures are considered... a) producers b) consumers c) scavengers d) decomposers

c) scavengers

200

The greenhouse effect is a result of... a) an over-dependence on fossil fuels b) the pollution of rivers by industry c) the erosion of farmland d) the use of nuclear power plants

a) an over-dependence on fossil fuels

300

Which of the following is a method to prevent using up all of our drinkable water? a) using better plumbing b) taking showers rather than tub baths c) making laws dealing with the dumping of industrial wastes into rivers d) all of the above

d) all of the above

400

The change in dominant species in an area is called... a) evolution b) birth order c) succession d) co-dominance

c) succession

500

Which of the following is a way to prevent the loss of habitat for wildlife? a) using wood-burning stoves for heat b) recycling wood products c) using herbicides to control weeds d) building dams for hydroelectric power

b) recycling wood products

D

100

A hawk carries a field mouse to its nest to feed its young. The hawk is... a) a herbivore b) a carnivore c) an omnivore d) none of these

b) a carnivore

200

Which of the following is characteristic of producers? a) ability to decompose dead organisms b) ability to undergo photosynthesis c) ability to hunt d) ability to eat plants

b) ability to undergo photosynthesis

300

Which term refers to the behavior of two species attempting to use the same living space, food source, and water source? a) saprophytic b) competitive c) predatory d) symbiotic

b) competitive

400

Which group of organisms is an example of a population? a) leopard frogs in a stream b) birds in Colorado c) reptiles in the Sahara Desert d) trees in a forest

a) leopard frogs in a stream

500

The Exxon Valdez caused a huge _________________ in Alaska in 1989. a) strip mine b) landfill c) oil spill d) nuclear explosion

c) oil spill