WorksheetsUnit 3 Test Quizizz
Total questions: 30
Worksheet time: 21mins
Name
Class
Date
1.
Energy flows through the trophic levels of a food web. Which of the following statements regarding this flow of energy is true?
a)
Energy is neither created nor destroyed; therefore, it is fully transferred to each trophic level.
b)
Ecological pyramids diagram the flow of energy with producers at the top and consumers at the bottom.
c)
Energy flows down from the top consumers to other carnivores, then herbivores, and finally down to the producers
d)
Generally, only 10% of energy is transferred from one trophic level to the next.
2.
Food webs are used to depict the flow of energy through an ecosystem, as well as the relationships that exist between organisms in an ecosystem. These food webs do not, however, provide detailed information on the relative size of each population. Despite this fact, which generalization can be made about a functioning ecosystem?
a)
There will always be fewer primary consumers than
secondary consumers.
b)
b.
There will always be fewer decomposers
than predators.
c)
c.
There will always be more producers than
consumers.
d)
d.
There will always be more predators than
consumers.
3.
Energy within an ecosystem flows from the producers to the consumers. However, a very important group of heterotrophs are decomposers. What role do decomposers serve in an ecosystem?
a)
They make their own food and provide energy for the
rest of the system
b)
They break down organic matter into nutrients for
other organisms.
c)
They change electromagnetic energy from the Sun into
usable energy forms
d)
They consume the producers and provide energy for the
higher consumers.
4.
A forest is shown in the picture below. How can producers be identified in this food web?
a)
Producers are any organism below the top consumers.
b)
Producers always have arrows pointing toward them, but
no arrows coming from them.
c)
Producers are the autotrophs that make their own food
and have no arrows pointing toward them.
d)
Producers are any organism on the food
web, wince they all undergo metabolic reactions.
5.
Which of the following correctly describes the distribution of available energy among the different trophic levels of any food web?
a)
The amount of available energy is the highest among
the primary and tertiary consumers of the food web.
b)
The amount of available energy decreases as the food
web approaches the tertiary consumers.
c)
The amount of available energy is evenly distributed
among the consumers in the food web.
d)
The amount of available energy increases as the food
web moves from primary consumers to secondary and tertiary consumers.
6.
Which of the following best describes the flow of energy in a food web that contains the following organisms: fish, zooplankton, bacteria, and phytoplankton?
a)
fish --> zooplankton --> phytoplankton -->
bacteria
b)
phytoplankton --> zooplankton --> fish -->
bacteria
c)
phytoplankton --> zooplankton --> bacteria
--> fish
d)
bacteria --> phytoplankton --> zooplankton
--> fish
7.
Jamie has created this food web. Which of the following are at the same trophic level?
a)
Wolf and Insects
b)
Birds and Bees
c)
Deer and Red Fox
d)
Nuts and Leaves
8.
Which of the following correctly explains why the distribution of available energy decreases as the food web, shown below, moves from primary consumers to secondary and tertiary consumers?
a)
The lowest trophic levels receive their energy
directly from the sun.
b)
Metabolism and other processes at each trophic level
are not 100% efficient, losing lots of available energy as heat.
c)
Storage of available energy is easier for animals in
the lower trophic levels than those at the top.
d)
The lower trophic levels have more biomass than the
upper trophic levels.
9.
How can you identify herbivores in any food web?
a)
Herbivores capture the energy from sunlight.
b)
Herbivores obtain energy by eating only plants.
c)
Herbivores are consumers that eat both plants and
animals.
d)
Herbivores break down organic matter.
10.
Which of the following best explains the difference in the amount of available energy in the trophic levels of the desert ecosystem?
a)
There is less energy available in the producers
because their tissues are less dense than those at higher trophic levels.
b)
There is more energy available in the second trophic
level because less energy is needed for hunting compared to the higher trophic
levels.
c)
There is more available energy in the birds of prey
because they have greater muscle mass for storing energy than organisms in
lower trophic levels have.
d)
There is less available energy in the fourth trophic level
because of the loss of energy through metabolism in each of the lower trophic
levels.
11.
Which of these organisms would most likely be found at the top of an energy pyramid?
a)
clams - a primary consumer
b)
sharks - a secondary consumer
c)
sardines - a primary consumer
d)
kelp - a primary producer
12.
Which organism receives the least amount of energy from the producers?
a)
Hawk
b)
Rabbit
c)
Grasshopper
d)
Mouse
13.
The removal of which of the following groups would cause the most immediate decrease in the amount of energy flowing through the entire system?
a)
Producers
b)
Consumers
c)
Decomposers
d)
Inorganic nutrients
14.
The diagram below shows a food web in a large park. Each circle represents a different species in the food web. Which of the organisms in the food web could be referred to as primary consumer(s)?
a)
7 only
b)
2, 3 and 4 only
c)
5 and 6 only
d)
2, 5, 7 only
15.
In a marsh ecosystem, alligators, woodstorks, muskrats, cattails, ferns, and grasses make up a food web. If a disease eliminates the fern population, which of the following is the most likely consequence?
a)
The herbivores would consume the decomposers.
b)
The animals relying solely on ferns for food would die out.
c)
The carnivores would adapt to become herbivores.
d)
All trophic levels would be affected except the top consumers.
16.
Which of the following statements is true about natural systems?
a)
Consumers form the bottom levels of both the energy
pyramid and the biomass pyramid.
b)
Producers are at the bottom level of both the energy
pyramid and the biomass pyramid.
c)
Producers are at the bottom of the energy pyramid, but
at the top of the biomass pyramid.
d)
Consumers are at the bottom of the energy pyramid, but
at the top of the biomass pyramid.
17.
Which will most likely happen if the decomposers are removed from the carbon cycle?
a)
The amount of carbon dioxide in the atmosphere will increase.
The amount of carbon dioxide in the atmosphere will increase.
b)
The amount of carbon dioxide in the atmosphere will
decrease.
c)
The amount of carbon dioxide used by producers will
increase.
d)
The amount of carbon dioxide needed by consumers will
decrease.
18.
The framework of organic molecules essential to all organisms is composed mainly of carbon atoms. Which processes are involved in the cycling of carbon within an environment?
a)
photosynthesis and respiration
b)
evaporation and condensation
c)
transcription and translation
d)
diffusion and transpiration
19.
Which nutrient is being cycled in the environment?
a)
water
b)
nitrogen
c)
phosphorus
d)
carbon
20.
In a process called transpiration, plants get rid of excess water through pores in the leaves called stomata. Which of the following terms best describes how the released water enters the atmosphere?
a)
condensation
b)
precipitation
c)
evaporation
d)
capillary action
21.
As water cycles through an ecosystem, which process returns it to the atmosphere though by Plants?
a)
Condensation
b)
Transpiration
c)
Perspiration
d)
Precipitation
22.
In the carbon cycle, what purpose do the bacteria serve?
a)
They convert glucose from living organisms into energy
and release the carbon in the form of carbon dioxide.
b)
They break down carbon from decaying organisms and
release the carbon as carbon dioxide.
c)
They act as a reservoir for carbon by storing it in
the form of dissolved organic carbon.
d)
They absorb carbon dioxide from the atmosphere and
convert the carbon into glucose for organisms to consume.
23.
If the xylem in a young tree is damaged, which process is affected first?
a)
performing photosynthesis
b)
transporting water to the leaves
c)
transporting sugar to the roots
d)
absorbing water from the soil
24.
The cambium is a section of cells in a plant that can become either part of the xylem or phloem, depending on the growth and needs of the plant. If the cambium of a particular plant was damaged, what would be the most likely effect on the plant?
a)
The plant would lose its ability to carry out photosynthesis.
b)
The plant would have uncontrolled growth.
c)
The plant would not experience any change in physiology.
d)
The plant would not be able to transport nutrients and water.
25.
The diagram below represents a flower, the reproductive structure of some plants. Most flowers have both male and female structures for fertilization and reproduction.
a)
the stamen, a male structure which produces pollen
b)
the pistol, a female structure which collects pollen and passes it to the ovary
c)
the sepal, a modified leaf used for protection of the flowe
d)
the petals, decorative structures which attract pollinators
26.
How does the structure marked X contribute to the survival of the plant?
a)
It allows the intake of gases necessary for
photosynthesis
b)
It allows the intake of minerals necessary for plant
growth
c)
It allows the intake of sunlight necessary for ATP
production
d)
It allows the intake of sugars necessary for plant
reproduction
27.
Carmen conducted an experiment to determine if listening to different types of music would affect a person’s pulse. Her hypothesis was that pulse rate would change with different types of music. Each person listened to seven different selections of music for 30 seconds each. Each person’s pulse was taken before the music and then after each 30-second interval of music. The pulses were taken again after the music selections were completed. Based on her experiment, Carmen concluded that a person’s pulse rate changed when the person listened to different types of music.
a)
a question
b)
a hypothesis
c)
a control group
d)
a description of the experiment
28.
Which of the following conclusions can be drawn from this graph?
a)
Atmospheric carbon dioxide levels are responsible for
global temperature change.
b)
Atmospheric carbon dioxide levels have been rising at
about the same rate for the past century.
c)
Atmospheric carbon dioxide levels have remained the
same over the past century.
d)
Atmospheric carbon dioxide levels have been rising at
an increasingly higher rate as the past century has progressed.
29.
A scientist performs an experiment to see if acids have an effect on the health of a particular type of plant. Three sets of plants were treated with acidic solutions of known pH while the control set was treated with a solution of neutral pH 7.
Which is the best conclusion for this experiment? Remember that the farther away the pH is from 7 and the closer it is to 0, the stronger the acidity.
Which is the best conclusion for this experiment? Remember that the farther away the pH is from 7 and the closer it is to 0, the stronger the acidity.
a)
Acid has no effect on the health of this type of
plant.
b)
High acidity is helpful to this type of plant.
c)
Low acidity is harmful to this type of plant
d)
High acidity is harmful to this type of plant
30.
A research group has discovered that damselflies, a type of dragonfly, are being infected by a particular type of aquatic protozoan. Both young and adult damselflies are not directly infected by the protozoan but contract the infection from the prey they eat. The graph shows the percentage of adult damselflies infected by protozoans during the summer and early fall.
a)
Infection in embanked ponds increased during the
sampling period.
b)
Protozoans were more common in creek-fed ponds than
embanked ponds.
c)
Protozoans reproduce more quickly in embanked ponds
than creek-fed ponds.
d)
Infection in creed-fed ponds remained constant
throughout the sampling period.
100 %
