Quiz about unit 3

Question 1

The original source of energy for a food web is...

Accepted Answer

sun

Answer

plants

Answer

producers

Answer

decomposers

Question 2

Decomposers get energy from...

Accepted Answer

dead things and waste

Answer

the sun

Answer

eating plants

Answer

eating animals

Question 3

Producers are ...

Accepted Answer

all of these are true

Answer

plants

Answer

able to do photosynthesis

Answer

also called autotrophs

Question 4

Arrows in a food web represent...

Accepted Answer

energy

Answer

eating

Answer

sunlight

Answer

matter

Question 5

Photosynthesis is important because...

Accepted Answer

it makes food for the food webs

Answer

it makes carbon dioxide

Answer

it makes water

Answer

it's not important

Question 6

Who is the producer?

Accepted Answer

lettuce

Answer

greenfly

Answer

ladybird

Answer

thrush

Question 7

What is a producer?

Accepted Answer

an organisms that uses sunlight to make its own food

Answer

an organism that gets energy from eating other organisms

Answer

an organism that gets energy from eating dead organisms, non-living material or waste

Question 8

An animal that hunts other animals for food is a ___________

Accepted Answer

predator

Answer

herbivore

Answer

prey

Answer

omnivore

Question 9

What is a herbivore?

Accepted Answer

an organism that gets energy from eating only plants

Answer

an animal that gets energy from eating other animals

Answer

an animal that gets energy by eating both plants and other animals

Question 10

An organism that gets energy from eating other organisms is a ______________

Accepted Answer

consumer

Answer

producer

Answer

decomposer

Question 11

An animal that is hunted and eaten for food is a

Accepted Answer

prey

Answer

predator

Question 12

What is a carnivore?

Accepted Answer

an animal that gets energy by eating other animals

Answer

An animal that gets energy by eating only plants

Answer

an animal that gets energy by eating both plants and animals

Question 13

An animal that gets energy from eating both plants and animals is a(n)

Accepted Answer

omnivore

Answer

herbivore

Answer

carnivore

Question 14

Which of the following is NOT a consumer

Accepted Answer

grass

Answer

dog

Answer

shark

Answer

fish

Question 15

Which of the following is a living part of the ecosystem?

Accepted Answer

Mushroom

Answer

Air

Answer

Sunlight

Answer

Soil

Question 16

Which of the following organisms is a herbivore?

Accepted Answer

rabbit

Answer

lion

Answer

jackel

Answer

snake

Question 17

Which of the following organisms is in competition with the wild cat for their food source?

Accepted Answer

jackel

Answer

goat

Answer

mouse

Answer

rabbit

Question 18

Which of the following organisms is a primary consumer?

Accepted Answer

grasshopper

Answer

snake

Answer

fox

Answer

squirrel

Question 19

A consumer that hunts is called ____.

Accepted Answer

a predator

Answer

a producer

Answer

nothing

Answer

a herbivore

Question 20

A snake eats a mouse. The snake and mouse are demonstrating _________.

Accepted Answer

predator/prey

Answer

mutualism

Answer

competition

Answer

parasitism

Question 21

Recently, a family of bobcats moved into an area with a large rabbit population. What changes may occur in the ecosystem?

Accepted Answer

The rabbit population may decrease.

Answer

The rabbit population may increase.

Answer

The rabbit population may increase first, then decrease.

Answer

The rabbit population will remain the same.

Question 22

True or False. In this Food Web Pyramid the consumers on each level only get about 10 percent of energy that the plants have stored.

Accepted Answer

True

Answer

False

Question 23

The diagram is intended to show relationships in an ecosystem. Gerhmayne and Macaden are discussing what the arrows represent. What are they likely discussing?

Accepted Answer

The direction of the energy flow

Answer

The direction of population migration

Answer

Differences in dietary habits

Answer

Progressively smaller organisms

Question 24

Using the diagram provided, which of the following energy pyramids best represents the data?

Accepted Answer

Option A is correct

Answer

B.

Answer

C.

Answer

D.

Question 25

What is the average amount of energy transferred from one trophic level to the next?

Accepted Answer

10%

Answer

90%

Answer

20%

Answer

50%

Question 26

An organism that eats the secondary consumer.

Accepted Answer

Tertiary Consumer

Answer

Primary Consumer

Answer

Secondary Consumer

Answer

Consumer

Question 27

The diagram represents a pyramid of energy in an ecosystem.  Which level would most likely contain members of the plant kingdom?

Accepted Answer

D

Answer

A

Answer

B

Answer

C

Question 28

If there is 1000 Kcal available in the producers in trophic level 1, how much energy is available in the herbivores in trophic level 2?

Accepted Answer

100 Kcal

Answer

10 Kcal

Answer

1 Kcal

Answer

1000 Kcal

Question 29

The diagram represents a model of a food pyramid.  Which statement best describes what happens in this food pyramid?

Accepted Answer

Energy is lost to the environment at each level, so less mass can be supported at each higher level.

Answer

More organisms die at higher levels than at lower levels, resulting in less mass at higher levels.

Answer

When organisms die at higher levels, their remains sink to lower levels, increasing the mass of lower levels.

Answer

Organisms decay at each level, and thus less mass can be supported at higher levels

Question 30

What does a pyramid of numbers compare?

Accepted Answer

the number of individual organisms at each trophic level

Answer

the number of individuals in each population

Answer

the number of predators and prey in an ecosystem

Answer

the number of different populations at each trophic level

Question 31

How much of the energy in each level of a ecological pyramid gets lost as heat or used by the organism so that it cannot be passed on to the next trophic level?

Accepted Answer

90%

Answer

80%

Answer

10%

Answer

20%

Question 32

What type of pyramid does this show?

Accepted Answer

numbers

Answer

biomass

Answer

energy

Answer

producers

Question 33

Why do food chains and food webs usually have no more than four levels?

Accepted Answer

Top consumers only get a tiny amount from energy from producers.

Accepted Answer

Too many levels means top consumers do not get enough energy.

Answer

This is false. There are usually 5 or 6 levels.

Answer

The more levels you have, the more energy there is for the top producer.

Question 34

If only 10% of an organism's energy is available for the next trophic level, what happens with the other 90% of the energy?

Accepted Answer

It is used for life processes or lost as body heat.

Answer

It is destroyed after it is used up.

Answer

It remains for the next trophic level IF the predator consumes ALL of the organism.

Answer

It is lost completely as body heat.

Question 35

Why are energy pyramids never inverted?

Accepted Answer

because energy is always lost from one trophic level to the next

Answer

because energy is always gained from one trophic level to the next

Answer

because energy cannot be measured as it transfers from one trophic level to the next

Answer

because it just never is

Question 36

What is the water cycle?

Accepted Answer

the movement of water on, above, or below the surface of the Earth

Answer

the 3 forms of water

Answer

when water melts

Answer

when clouds form

Question 37

Which is the opposite of condensation?

Accepted Answer

evaporation

Answer

runoff

Answer

precipitation

Answer

transpiration

Question 38

Snow, sleet, hail, and rain are all examples of  ________________.

Accepted Answer

precipitation

Answer

evaporation

Answer

condensation

Answer

accumulation

Question 39

What is it called when plants give off water vapor as a waste product?

Accepted Answer

transpiration

Answer

condensation

Answer

evaporation

Answer

sublimation

Question 40

What is the energy source for the water cycle?

Accepted Answer

the sun

Answer

the earth

Answer

water

Answer

the moon

Question 41

What is the process during which water changes from a liquid to a gas as it heats up?

Accepted Answer

Evaporation

Answer

Condensation

Answer

Runoff

Answer

Precipitation

Question 42

What step of the water cycle occurs when clouds become too heavy?

Accepted Answer

Precipitation

Answer

Condensation

Answer

Runoff

Answer

Evaporation

Question 43

What is the process during which water cools and turns from a gas to a liquid?

Accepted Answer

Condensation

Answer

Runoff

Answer

Precipitation

Answer

Evaporation

Question 44

What is it called when water droplets form on the outside of a cool glass?

Accepted Answer

Condensation

Answer

Transpiration

Answer

Precipitation

Answer

Evaporation

Question 45

The water cycle is a good example of the cyclic nature of some materials in a natural ecosystem. Cyclic is best defined as

Accepted Answer

occurring in cycles

Answer

never ending

Answer

succession

Question 46

As water evaporates it enters the air as

Accepted Answer

water vapor

Answer

clouds

Answer

rain

Question 47

Precipitation that enters the soil is called

Accepted Answer

ground water

Answer

surface water

Answer

runoff water

Question 48

The water that moves along the surface of the earth is called

Accepted Answer

runoff water

Answer

ground water

Answer

surface water

Question 49

Which of the following add carbon dioxide to the atmosphere?

Accepted Answer

all of these

Answer

volcanoes

Answer

combustion of fossil fuels

Answer

animal and plant respiration

Question 50

How nitrogen is "fixed" into useable form for plants

Accepted Answer

through action of bacteria & lightning

Answer

only through action of bacteria

Answer

only through lightning

Answer

through photosynthesis

Question 51

Why do all organisms need nitrogen?

Accepted Answer

To live and grow

Answer

To build phosphorus

Answer

To make oxygen levels grow

Answer

To help blood circulate better

Question 52

Nitrogen fixing bacteria, lives in nodules on the root of a plant called

Accepted Answer

Legumes

Answer

Broccoli

Answer

Beats

Answer

Carrots

Question 53

Where does Photosynthesis get the carbon dioxide it needs?

Accepted Answer

from cellular respiration

Answer

from photosynthesis

Answer

from the water cycle

Answer

from the nitrogen cycle

Question 54

Which gas dissolves in the ocean and is used in Photosynthesis for aquatic plants?

Accepted Answer

carbon dioxide

Answer

water vapor

Answer

nitrogen gas

Answer

glucose

Question 55

Where does nitrogen go once it is in the soil?

Accepted Answer

roots of plants

Answer

stems of plants

Answer

leaves of plants

Answer

flowers of plants

Question 56

What lives in the roots of plants that fix the nitrogen so that plants can use the nitrogen?

Accepted Answer

bacteria

Answer

viruses

Answer

malaria

Answer

protists

Question 57

Animals get nitrogen by ____________.

Accepted Answer

eating plants

Answer

breathing air

Answer

dying

Answer

being struck by lightning

Question 58

oxygen is a gas produced by _ and used by  _

Accepted Answer

plants and animals

Answer

photosynthesis and carbon dioxide

Answer

animals and plants

Answer

carbon dioxide and photosynthesis

Question 59

Which of the following removes carbon from the atmosphere?

Accepted Answer

Photosynthesis

Answer

Combustion

Answer

Respiration

Answer

Death

Question 60

True or False...The nitrogen in the atmosphere is in a usable form and can be absorbed by living things.

Accepted Answer

False

Answer

True

Question 61

True or False...There is not much nitrogen in the atmosphere.

Accepted Answer

False

Answer

True

Question 62

The process of plants absorbing usable nitrates from the soil with their roots is known as ____.

Accepted Answer

assimilation

Answer

nitrification

Answer

fixation

Answer

denitrification

Question 63

Nitrogen is an important building block of _____ for living things.

Accepted Answer

proteins

Answer

water

Answer

food

Answer

energy

Question 64

The process of lightning changing atmospheric nitrogen into a more usable form is known as ____.

Accepted Answer

lighting fixation

Answer

ammonification

Answer

assimilation

Answer

denitrification

unit 3

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