Deck 16: Community Interactions

Question 1

The living organism that provides nutrients for a parasite is the

A) prey.
B) host.
C) predator.
D) scavenger.

Answer 1

host.

Question 2

What an animal uses for food is part of its

A) habitat.
B) niche.
C) competition.
D) None of these answers is correct.

Answer 2

niche.

Question 3

An animal that feeds on living material but does not kill the animal it feeds on is a

A) prey.
B) host.
C) parasite.
D) predator.

Answer 3

parasite.

Question 4

A rabbit is eaten by a fox; this is an example of

A) a part of the rabbit's niche.
B) parasitism.
C) mutualism.
D) None of these answers is correct.

Question 5

If a bass kills a perch and eats half the perch, and a crayfish feeds on the other half of the perch, the crayfish is

A) a parasite.
B) a predator.
C) a scavenger.
D) None of these answers is true.

Question 6

If a habitat is where you live, a niche is

A) what you do there.
B) where you sleep.
C) the same thing.
D) None of these answers is true.

Question 7

Among which of the following pairs of animals is competition likely to be most intense?

A) hummingbirds-honeybees
B) wolves-bison
C) grasshoppers-honeybees
D) mature white oak trees-young white oak trees

Question 8

Species A and species B both benefit by living together. This is an example of

A) competition.
B) commensalism.
C) mutualism.
D) succession.

Question 9

A suitable habitat would furnish an animal with

A) food.
B) shelter.
C) water.
D) All of these answers are true.

Question 10

An animal that kills for food is a

A) predator.
B) parasite.
C) scavenger.
D) All of these answers are true.

Question 11

A tapeworm living in a person's intestine is

A) a vector.
B) an internal parasite.
C) a mutualistic organism.
D) a predator.

Question 12

All of the following are examples of symbiotic relationships except

A) algae and fungi living together as a lichen.
B) the protozoa that live in the intestine of termites and digest cellulose that termites cannot digest.
C) the mosquito that visits a mammal for a blood meal.
D) the malaria parasite that lives in the liver of humans.

Question 13

When two species are harmed, it's called

A) mutualism.
B) commensalism.
C) competition.
D) predation.

Question 14

Protozoa that live in the gut of a termite and help to digest wood are engaged in

A) mutualism.
B) competition.
C) communism.
D) amensalism.

Question 15

Competition can occur for which of the following?

A) Food.
B) Space.
C) Mating.
D) All of these answers are true.

Question 16

The introduction of foreign species into an area often causes problems because

A) they replace native species.
B) they compete with native species.
C) they cause the extinction of native species.
D) All of these answers are true.

Question 17

The usual type of symbiotic relationship between humans and the bacteria normally found in their intestinal tract is that of

A) predator/prey.
B) parasitism.
C) mutualism.
D) communism.

Question 18

A niche is

A) a place where an organism lives.
B) the way an organism goes about living.
C) a place where you put yourself.
D) an animal that is able to slip through a narrow opening.

Question 19

An animal that serves as food for other animals is a

A) prey.
B) predator.
C) parasite.
D) symbiont.

Question 20

The type of cooperation between two species of a community that is based on satisfying the needs of both species is called

A) commensalism.
B) mutualism.
C) parasitism.
D) predation.

Question 21

The most destructive activity of humans that has led to many extinctions is

A) predator control.
B) pesticide use.
C) biomagnification.
D) habitat destruction.

Question 22

Some kinds of shrimp obtain food by cleaning parasites from the surface of fish. This can be termed mutualism because

A) neither participating member is damaged.
B) both members benefit from the relationship.
C) the shrimp benefit and their hosts are not injured.
D) the host fishes cannot survive without the shrimp.

Question 23

A niche of a living organism is

A) that place or localized region where it is usually found.
B) approximately the same narrow range for any organism.
C) usually capable of being continuously occupied by several species.
D) made up of many needs of the organism and interactions with its environment.

Question 24

The interaction between two organisms, called commensalism,

A) always benefits one of the organisms and does not affect the other.
B) does not fit either of the definitions of symbiosis.
C) is illustrated by the relationship between the shark and the fish that it eats.
D) includes all of these statements.

Question 25

Which of the following would be an external parasite?

A) a bird that aids large mammals by eating parasites in the skin of the large mammal
B) a fungus living on the dead remains of a tree
C) a cowbird that lays its eggs in the nest of another species of bird
D) a flea that lives among the feathers and feeds on the blood of a bird

Question 26

A community

A) is a population living in a certain habitat.
B) is a portion of a species making its home within a certain habitat.
C) includes those animals that only visit a habitat for food and drink.
D) includes all organisms that interact with one another within a local area.

Question 27

An organism serving the role of host is a part of the interaction called

A) competition.
B) mutualism.
C) parasitism.
D) predation.

Question 28

The biome with the fewest seasonal changes is the

A) temperate deciduous forest.
B) grassland.
C) tropical rain forest.
D) boreal coniferous forest.

Question 29

An example of community is

A) this class.
B) the various kinds of plants, animals, and bacteria in a vacant lot.
C) bees in a hive.
D) the water, soil, and air in a farmer's field.

Question 30

If a species of insect provides most of the food for a particular species of bird, this is part of the bird's

A) habitat.
B) environment.
C) niche.
D) range.

Question 31

Some animal populations are kept in check by

A) hosts.
B) decomposers.
C) amensalism.
D) predators.

Question 32

Which of the following is NOT a community?

A) a group of different species living in a pond
B) a forest
C) a population of rabbits
D) a pine tree and the organisms that live on it

Question 33

When a bass feeds on a frog, the frog is the

A) prey.
B) predator.
C) vector.
D) niche.

Question 34

If an animal cannot digest a chemical but is able to pass out all the chemical as waste material, there is

A) biomagnification.
B) succession.
C) no parasitism.
D) no biomagnification.

Question 35

Which of the following is an example of a biome?

A) tundra in Alaska
B) the lawn at your college
C) sugar cane fields
D) Australia

Question 36

Biomagnification is concerned with

A) succession.
B) organic molecules.
C) molecules that organisms cannot metabolize.
D) vectors.

Question 37

Animal A kills animal D for food; animal C lives in animal D but does not harm D; animal B lives on the surface and sucks blood from D. The animal(s) that is/are a parasite on animal D is/are:

A) A.
B) A and C.
C) B.
D) B and C.

Question 38

An organism that carries a disease between hosts is a

A) parasite.
B) predator.
C) vector.
D) All of these answers are true.

Question 39

The biome with permafrost is

A) tundra.
B) temperate deciduous forest.
C) desert.
D) temperate grassland.

Question 40

If two animals are living together and the death of one results in the death of the other, the two animals were

A) competitors.
B) vectors.
C) mutualistic.
D) predators.

Question 41

If a relationship is harmful to both the animals in that relationship, the relationship is one of

A) competition.
B) parasitism.
C) symbiosis.
D) mutualism.

Question 42

A ____ is a pelagic animal.

A) fish
B) slug
C) housefly
D) moose

Question 43

The greatest diversity of animals is found in the

A) tropical rainforest.
B) boreal coniferous forest.
C) tundra.
D) temperate deciduous forest.

Question 44

Areas with low amounts of rainfall and moderate temperatures will develop a ____ biome.

A) desert
B) temperate deciduous forest
C) temperate grassland
D) tundra

Question 45

The specific place in the ecosystem occupied by an organism is the organism's

A) niche.
B) range.
C) den.
D) habitat.

Question 46

A pelagic animal is

A) sessile.
B) a filter feeder.
C) a larval form.
D) a free swimmer.

Question 47

The temperature does not go below freezing in the

A) desert.
B) temperate grassland.
C) tropical rainforest.
D) desert or the tropical rainforest.

Question 48

In biomagnification, the least concentration of a persistent organic molecule would be found in the

A) herbivore.
B) producer.
C) omnivore.
D) carnivore.

Question 49

Acacia trees provide food and shelter for ants. In turn ants protect the Acacia trees from herbivorous insects. This relationship exemplifies

A) mutualism.
B) parasitism.
C) commensalism.
D) amensalism.

Question 50

Many sponges and shellfish provide shelter for aquatic guests who do no harm or benefit to their host. This is an example of

A) mutualism.
B) parasitism.
C) commensalism.
D) amensalism.

Question 51

You live at the base of a mountain where there is a tropical forest. As you travel up the mountain you would expect

A) the kinds of plants and animals to be similar at the base and top of the mountain.
B) the forest will change into a grassland.
C) to see organisms similar to those found in more northerly climates.
D) to find desert.

Question 52

A tropical region that has large grassy areas with scattered trees is a

A) prairie.
B) savanna.
C) tundra.
D) desert.

Question 53

Which of the following would have the highest productivity?

A) desert
B) tundra
C) temperate deciduous forest
D) the open ocean

Question 54

This biome is located near oceans with wet, cool winters and hot, dry summers. Rainfall is 40 to 100 centimeters per year.

A) prairie
B) savanna
C) tundra
D) chaparral

Question 55

The euphotic zone is that region of the ocean where

A) photosynthesis occurs.
B) there is a warm temperature.
C) sessile organisms are supported.
D) there is always light.

Question 56

A large regional community is

A) a biome.
B) the biosphere.
C) an ecosystem.
D) a trophic level.

Question 57

A difference between a grassland and a savanna is

A) the pattern of rainfall.
B) fire.
C) carnivores.
D) decomposers.

Question 58

The tundra, boreal forest, and tropical savanna are all

A) communities.
B) ecosystems.
C) food chains.
D) biomes.

Question 59

The ____ has the greatest productivity.

A) tundra
B) desert
C) boreal forest
D) tropical rainforest

Question 60

An ecosystem has a long growing season, high species diversity, and rapid growth. It is most likely a

A) desert.
B) tundra.
C) tropical rain forest.
D) northern coniferous forest.

Question 61

Whether an area of the country will be a desert or grassland is primarily determined by

A) the average temperature.
B) the average rainfall.
C) the length of the winter.
D) the kinds of animals in the area.

Question 62

When a glacier retreats it leaves behind rocks and there is no living thing present. If succession occurs in such cases, one of the first processes that must take place is

A) an increase in temperature.
B) an increase in the number of kinds of animals.
C) formation of soil.
D) reduction in the amount of water.

Question 63

The productivity of an ecosystem

A) can be measured in biomass produced.
B) can change depending on the stage of succession.
C) is dependent on such abiotic factors as; temperature, water, and sunlight.
D) All of these answers are true.

Question 64

If a forest fire destroys a region of the forest,

A) secondary succession will occur.
B) primary succession will occur.
C) a climax community is present in the burned area.
D) None of these answers is correct.

Question 65

In a marsh community, aquatic plankton contain 0.04 ppm of DDT, small fish contain 0.30 ppm of DDT, larger fish contain 1.5 ppm of DDT, and cormorants (fish-eating birds) contain 24 ppm of DDT. This is an example of

A) the carbon cycle.
B) succession.
C) nutrient cycling.
D) biomagnification.

Question 66

Following a hurricane an area will become re-forested. This statement is best described by the term

A) evolution.
B) succession.
C) trophic level.
D) pioneer community.

Question 67

Acacia trees often have ants that live on them. The ants feed on materials produced by special structures called nectaries, which the tree produces. The ants will attack other animals that begin to feed on the tree and will even cut off small branches of other trees that come in contact with "their" tree. The relationship between Acacia trees and ants is called

A) mutualism.
B) competition.
C) predator/prey.
D) parasite/host.

Question 68

"At one time there was a shallow pond in this area. Now it has all filled in and is a field." This statement would best describe

A) climax community.
B) primary succession.
C) secondary succession.
D) pioneer community.

Question 69

Persistent pollutants that accumulate in living tissue will be most concentrated in the bodies of

A) producers.
B) decomposers.
C) carnivores.
D) herbivores.

Question 70

These organisms live either attached to a substrate or free-living on the ocean floor.

A) benthic
B) plankton
C) pelagic
D) littoral

Question 71

The last stage of succession is the

A) early community.
B) climax community.
C) biome community.
D) pioneer community.

Question 72

The term "ecological succession" refers to

A) the flow of energy from producers to consumers.
B) replacement of one plant community by another.
C) successive seasons of the year that guide the growth of ecosystems.
D) an unending series of geological events that occur in all areas.

Question 73

You would find primary succession at(on)

A) rock exposed by glaciers.
B) a prairie destroyed by fire.
C) an abandoned agricultural field.
D) a clear-cut forest.

Question 74

A stable, long-lasting community is a

A) successional community.
B) pioneer community.
C) climax community.
D) sere.

Question 75

A correct successional sequence is represented by

A) grasses $\rightarrow$ mosses $\rightarrow$ herbs $\rightarrow$ trees $\rightarrow$ shrubs.
B) trees $\rightarrow$ shrubs $\rightarrow$ mosses $\rightarrow$ herbs $\rightarrow$ grasses.
C) herbs $\rightarrow$ grasses $\rightarrow$ mosses $\rightarrow$ shrubs $\rightarrow$ trees.
D) mosses $\rightarrow$ herbs $\rightarrow$ grasses $\rightarrow$ shrubs $\rightarrow$ trees.

Question 76

Which of the following is most likely to be found in a pioneer community?

A) small trees
B) well-developed soil
C) few kinds of organisms
D) no organisms

Question 77

Which of these are likely to be pioneer organisms?

A) lichens, moss, grass, and insects
B) elephants and deer
C) rabbits, grass, trees, and birds
D) mice and men

Question 78

Which is most likely an example of pioneer plants?

A) weeds growing in the grassland
B) algae on a bare rock
C) maple tree forest
D) Indian corn

Question 79

A ____ is a pioneer organism.

A) shrub
B) lichen
C) tree
D) raccoon

Question 80

Organisms that are NOT attached to the bottom of an aquatic ecosystem are termed

A) benthic.
B) abyssal.
C) pelagic.
D) scavengers.