13 Jan Question 15 As the lati

hen:

A. a population experiences extreme competition for resources.
B. the birth rate is less than or equal to the death rate.
C. growth conditions are ideal.
D. the rate of increase of the population is negative.

Question 2 The death rate of a population is referred to as:

A. survivorship.
B. life expectancy.
C. opportunistic.
D. mortality.

Question 3 The major density dependent limiting factor in populations is:

A. intraspecies competition.
B. parasitism.
C. weather conditions.
D. predation.

Question 4 Uniform distribution patterns for a population are:

A. relatively rare in nature.
B. due to one organism not influencing another organism’s growth pattern.
C. best for animals that hunt and care for their young together.
D. due to unevenly distributed resources in an environment.

Question 5 Which of the following IS NOT considered a population?

A. all of the humans in the world
B. all of the protozoans in the gut of one termite
C. all of the cliff swallows on a particular mountain
D. all of the plants growing in a specific field

Question 6 A decomposer obtains its food from:

A. fallen leaves and bodies of dead animals.
B. eating other organisms.
C. photosynthesis.
D. the sun.

Question 7 Which of the following organisms is a primary consumer?

A. a cow
B. a flowering plant
C. a lion
D. an oak tree

Question 8 Which of the following would represent an ecosystem?

A. oak trees, grass, roses, shrubs
B. the sun, the temperature, amount of rainfall, type of soil
C. oak trees, beetles, squirrels, robins
D. the sun, amount of rainfall, oak trees, beetles, squirrels

Question 9 Which of the following organisms is an autotroph?

A. an insect
B. a decomposer
C. a producer
D. a consumer

Question 10 In the food web involving the green heron, a flea, a sunfish and algae, which organism would have the greatest biomass?

A. the flea
B. the algae
C. the green heron
D. the sunfish

Question 11 Which of the following DOES NOT affect the temperature and rainfall of an area?

A. the amount of solar radiation that reaches the area
B. the number of different species in an area
C. the geographical features of the Earth such as mountains and valleys
D. the global atmospheric and oceanic circulation patterns

Question 12 Because of the rain shadow effect on mountains:

A. the air traveling down the leeward side cools and it loses moisture as precipitation.
B. the air traveling up the windward side cools and it picks up moisture.
C. the air traveling up the windward side cools and it loses moisture as precipitation.
D. the air traveling down the leeward side cools and it picks up moisture.

Question 13 When the sun’s rays strike the northern hemisphere more directly, it experiences:

A. winter.
B. the rainy season.
C. the dry season.
D. summer.

Question 14 A savanna:

A. is wet all year long.
B. contains some of the richest soil on the earth.
C. is home for mainly tree living animals.
D. is an open grassland with scattered shrubs and trees.

Question 15 As the latitude increases from the equator:

A. the angle at which the sun’s rays strike the Earth increases, and the climate is colder.
B. the angle at which the sun’s rays strike the Earth decreases, and the climate is colder.
C. the angle at which the sun’s rays strike the Earth decreases, and the climate is warmer.