WorksheetsBio09.1 Energy Flow
Total questions: 15
Worksheet time: 8mins
What is the relationship between a community and a population?
A population includes communities of organisms interacting.
A community includes populations of organisms interacting.
A population is larger than a community.
A population is smaller than a community.
Which statement best represents the relationship between a producer and a consumer?
A snake catches a frog and swallows it whole.
A dog chews on a bone.
A panda eats bamboo.
A polar bear kills and eats a seal.
Into which trophic level will herbivores most likely be placed?
X
W
Y
Z
Which would most likely happen if the Bluegill population decreased significantly?
The Zooplankton population would start being consumed by the Kingfisher population.
The Crayfish population would compete with
the Minnows for food.
The Minnows population would decrease in number.
The Kingfisher population would decrease in number.
Which is the correct representation of energy flow through an ecosystem?
sun → autotrophs → heterotrophs
water → squirrel → nuts
sun → consumers → producers
autotrophs → heterotrophs → sun
Which correctly displays the direction energy flows in a food chain?
aphid →
rose plant →
beetle →
hawk →
mouse
beetle →
rose plant →
mouse →
hawk →
aphid
rose plant →
aphid →
beetle →
mouse →
hawk
hawk →
mouse →
beetle →
aphid →
rose plant
What orgnisms are found at level Y?
primary consumers
tertiary consumers
secondary consumers
producers
In which level is most of the available energy located within an energy pyramid?
The third-order consumer has the largest amount of available energy because it is at the top of the energy pyramid.
The producer level has the largest amount of available energy because it stores energy from the sun and supports all other trophic levels.
The first-order consumer has the largest amount of available energy because it requires less energy to digest its vegetarian diet.
The second-order consumer has the largest amount of available energy because more energy is obtained from a meat-eating diet than from plants.
As energy flows through each trophic level of the food chain approximately what percentage of energy is available to the next trophic level?
100%
10%
1%
50%
Which best describes energy transfer in an ecosystem among trophic levels?
Approximately ninety percent of all energy is used at each trophic level.
No energy is used in an ecosystem.
Approximately half of all energy is used at each trophic level.
Approximately ten percent of all energy is used at
each trophic level.
The branch of biology dealing with interactions among organisms and between organisms and their environment is called
genetics
ecology
zoology
botany
In this food chain
Algae → Zooplankton → Small fishes → Squid → Shark
The Algae at the beginning of the food chain are
Decomposers
Consumers
Heterotrophs
Producers
An organism that cannot make its own food is called a
producer.
autotroph.
heterotroph.
chemotroph.
A community in which barn owls and snakes consume only mice is observed. If the number of snakes increases which of the following is most likely to happen first?
the barn owl population will increase
the mouse population will remain the same
the mouse population will decrease
the barn owl population will decrease
Which represents the most likely flow of energy through an ecosystem?
grass →
mouse →
snake →
hawk
mouse →
grass →
hawk →
snake
snake →
mouse →
grass →
hawk
hawk →
snake →
mouse →
grass
