Science 7 Chapter 1-3 - Test Prep

Question 1

Which of the following two organisms are producers?

 a. plants and phytoplankton	
 b. plants and consumers	
 c. consumers and phytoplankton	
 d. phytoplankton and chlorophyll

Answer 1

a. plants and phytoplankton

Question 2

Producers make food using ______ to trap the Sun’s energy in a process called photosynthesis.

 a. food chains	
 b. chlorophyll	
 c. cellular respiration	
 d. microscopic organisms

Answer 2

b. chlorophyll

Question 3

Only a small amount of the energy stored in food is available to the next organism in a food chain because

a. there are more producers than consumers in a food chain
b. there are fewer top consumers than producers in a food chain
c. primary and secondary consumers compete for food
d. most of the energy is used for life processes

Answer 3

d. most of the energy is used for life processes

Question 4

Temperature, light, air, water, soil, and climate are all __________ parts of the environment.

 a. biotic	
 b. abiotic	
 c. living	
 d. boreal

Answer 4

b. abiotic

Question 5

Choose the phrase that correctly finishes this statement: “A species is…”

a. a specific part of the abiotic environment
b. a way of describing all the living parts of an ecosystem
c. a group of organisms that can successfully mate with each other and reproduce
d. part of the natural decomposing materials in soil

Answer 5

c. a group of organisms that can successfully mate with each other and reproduce

Question 6

Which of the following are necessary for the survival of living things?

a. air, water, food, and a suitable place to live
b. air, water and companions
c. temperature, light, air, water, soil, and climate
d. oxygen, carbon dioxide, soil, and energy

Answer 6

a. air, water, food, and a suitable place to live

Question 7

Ecology is the study of the

a. abiotic parts of the environment, such as climate, air, and soil
b. biotic parts of the environment, such as animals and plants
c. interactions between organisms
d. interactions between organisms as well as the interactions between organisms and their environment

Answer 7

d. interactions between organisms as well as the interactions between organisms and their environment

Question 8

What is an ecosystem?

a. All the interacting organisms that live in an environment and the abiotic parts of the environment that affect the organisms
b. A person who observes and studies the interactions between the biotic and abiotic parts of the environment
c. The relationship among the biotic parts of the environment
d. The relationship between all the abiotic elements of a pond

Answer 8

a. All the interacting organisms that live in an environment and the abiotic parts of the environment that affect the organisms

Question 9

Large regions that have about the same temperature and amount of rain or snow are known as…

Answer 9

biomes

Question 10

The four major biomes of Canada are…

Answer 10

tundra, grassland, boreal forest, and temperate forest

Question 11

What is a population?

Answer 11

A group of individuals of the same species that live in the same ecosystem

Question 12

Food, water, shelter, and a space in which to live all describe an organism’s…

Answer 12

habitat

Question 13

When populations share their environment and interact with populations of other species, it is called a…

Answer 13

community

Question 14

Scientists refer to a biological community and the abiotic parts of the environment that affect the community as…

Answer 14

an ecosystem

Question 15

If you studied ecosystems to learn about relationships between organisms and any changes in populations that take place over a long period of time, you would be…

Answer 15

an ecologist

Question 16

Scientists often estimate population sizes in ecosystems by marking off a specific area using a…

Answer 16

quadrat

Question 17

Which of the following is a way of counting the number of organisms in a small area to estimate the number of organisms in a much larger area?

 a. communicating	
 b. sampling	
 c. organizing	
 d. banding

Answer 17

b. sampling

Question 18

The space where an organism lives and the role an organism plays within its ecosystem is referred to as a…

Answer 18

niche

Question 19

An organism that creates its own food is called…

Answer 19

a producer

Question 20

A consumer is…

Answer 20

an organism that cannot produce its own food

Question 21

Herbivores, carnivores and omnivores are

a. plants, animals and micro-organisms
b. three types of consumers
c. three types of producers
d. three of British Columbia’s 10 ecoprovinces

Answer 21

b. three types of consumers

Question 22

An organism that eats decaying plants and animals is called…

Answer 22

a scavenger

Question 23

Parasitism, commensalism and mutualism are

a. three examples of producers
b. the three main types of symbiotic relationships
c. the three main types of ecological relationships
d. three examples of abiotic interactions

Answer 23

b. the three main types of symbiotic relationships

Question 24

Which of the following is NOT an example of a parasitic organism?

 a. tapeworm	
 b. mistletoe	
 c. termite	
 d. lice

Answer 24

c. termite

Question 25

Which of the following is a symbiotic relationship where one partner benefits and the other does not benefit or lose from the relationship? a. commensalism b. mutalism c. parasitism d. decomposition

Answer 25

a. commensalism

Question 26

Which of the following is a symbiotic relationship where both partners benefit? a. mutualism b. parasitism c. commensalism d. symbolism

Answer 26

a. mutualism

Question 27

Which of the following is a symbiotic relationship where one partner benefits and the other is harmed? a. commensalism b. mutualism c. symbolism d. parasitism

Answer 27

d. parasitism

Question 28

The amount of carbon in the environment a. does not change b. is converted to heat and lost to the abiotic environment c. is called the carbon cycle d. immediately converts to carbon dioxide

Answer 28

a. does not change

Question 29

The way in which carbon is used and reused through the ecosystem is called...

Answer 29

the carbon cycle

Question 30

The four main processes of the water cycle are

Answer 30

precipitation, condensation, transpiration, and evaporation

Question 31

The process in which water evaporates from the leaves, stems and flowers of plants is called...

Answer 31

transpiration

Question 32

The process in which liquid water changes into gas is called...

Answer 32

evaporation

Question 33

The process in which water vapor changes to a liquid is called...

Answer 33

condensation

Question 34

Water that moves over the surface of the ground into lakes and rivers is called...

Answer 34

run-off

Question 35

When any substance is added to the environment faster than it can be broken down, stored, or converted to a non-harmful form, it is called...

Answer 35

pollution

Question 36

Bioaccumulation is...

Answer 36

the build-up of pollutants in an organism

Question 37

In a food chain, the organisms most affected by bioaccumulation are...

Answer 37

top consumers

Question 38

Any abiotic or biotic factor that controls the number of individuals in a population is...

Answer 38

a limiting factor

Question 39

A population that has reached the largest number of individuals that the environment can support over a long period of time a. has no limiting factors b. contains only top consumers c. has reached its carrying capacity d. has changed from a food chain to a food web

Answer 39

c. has reached its carrying capacity

Question 40

The predator-prey cycle shows a. how one population can limit another population b. how wolves and elk maintain a mutualistic relationship c. how bioaccumulation helps maintain balance in nature d. how pollutants are recycled through species in the environment

Answer 40

a. how one population can limit another population

Question 41

Competition for resources is a limiting factor because a. there is only a limited amount of food and living space available in any ecosystem b. predator-prey populations often increase and decrease in cycles c. abiotic factors such as light, water, and temperature are present d. cities, highways, campgrounds and orchards provide alternate environments for animals and plants

Answer 41

a. there is only a limited amount of food and living space available in any ecosystem

Question 42

One of the main reasons wildlife populations become threatened is...

Answer 42

loss of habitat

Question 43

The gradual change in the make-up of a biological community over time is called

Answer 43

ecological succession

Question 44

Areas set aside to protect examples of the different habitats in the province are called...

Answer 44

ecological reserves

Question 45

___________ is the careful and responsible management of something for which you are responsible.

Answer 45

Stewardship

Question 46

The Nisga'a operate fish wheels on both the lower and the upper Nass River, allowing biologists to tag fish at the lower wheel and count them upstream. This is an example of a. an ecological reserve b. a habitat restoration project c. a habitat enhancement project d. environmental monitoring

Answer 46

d. environmental monitoring

Question 47

Objects found in nature that people use to meet their basic needs are a. baseline resources b. natural resources c. symbiotic resources d. traditional resources

Answer 47

b. natural resources

Question 48

Which of the following is NOT a renewable resource? a. natural gas b. trees c. fish d. wheat

Answer 48

a. natural gas

Question 49

Which of the following is a non-renewable resource? a. timber b. cattle c. coal d. orchards

Answer 49

c. coal

Question 50

When the resources of nature are being renewed or replaced at least as fast as they are used, this is a. reliability b. renewing the resources c. susceptibility d. sustainability

Answer 50

d. sustainability

Question 51

What is the biggest threat facing organisms today?

Answer 51

loss of habitat

Question 52

When sulfur and nitrogen compounds mix with water vapour, __________ is formed.

Answer 52

acid rain

Question 53

A species that is almost extinct is called...

Answer 53

an endangered species

Question 54

A species that could become endangered if the factors limiting its population are not reversed is called...

Answer 54

a threatened species

Question 55

Scientists use _____ to track changes in ecosystems by comparing the results of investigations done at different times. a. ecological watches b. organism monitoring c. environmental system gathering d. ecosystem monitoring

Answer 55

d. ecosystem monitoring

Question 56

Four common types of ecosystem monitoring are...

Answer 56

physical monitoring, environmental monitoring, chemical monitoring, and biological monitoring.