WorksheetsLife Science Test Review
Total questions: 30
Worksheet time: 15mins
Which of the following describes a relationship between biotic and abiotic parts of an environment?
a shark and the fish it eats
a caterpillar and the leaf where it makes a cocoon
the rain that washes away the sand on a river bank
a flower and the sunlight it uses to make food
Which of the following describes a relationship between two biotic components in an ecosystem?
a lake and the sun that warms the water
a person and the air she breathes
a squirrel and the acorn it hides
a tree's roots and the soil in which they grow
Put the following organisms in order to create a food chain.
Grass, Sun, Grasshopper, Snake, Owl
Owl, Snake, Grasshopper, Sun, Grass
Sun, Grass, Grasshopper, Snake, Owl
Fill in the blank.A group of organisms OF THE SAME SPECIES, living together in the same area is called a __________.
community
population
niche
Habitat
Which example listed below is NOT a population?
all the plant life in a meadow
all the red maple trees in a forest
all the Saguaro cacti in a desert
all the sunfish in a lake
Fill in the blank.
Squirrel, bird, insect, spider, and raccoon families all live in the same pine tree. Altogether, these animals make up the _______________ of the pine tree.
community
habitat
ecosystem
niche
Use the diagram below to answer the question. At which energy level(s) are organisms only receiving approximately 10% of the stored energy from the organisms in the previous energy level?
2, 3, and 4
1, 2, 3, and 4
4 only
1 only
What is the energy source for organisms located on the first level of an energy pyramid?
plants
herbivores
sun
carnivores
Which of the following is NOT an example of a decomposer?
a squirrel
A mushroom
bacteria
An earthworm
Which of the following is NOT an example of a scavenger?
A vulture
A squirrel
A crab
A lobster
In the food web below, which organisms are competing for the fly?
the fish and frog only
the owl and alligator only
the alligator, frog, and owl
the fish, frog, and owl
Fill in the blank. Competition occurs when _______________
two or more organisms need the same resources
one organism is hunting another organism
two different organisms can benefit from an interaction
when the interaction between two organisms neither benefits nor harms the organisms
The threadworm lives and grows inside an animal, such as a sheep. The threadworm feeds on the nutrients that the sheep gets from its food. The sheep becomes unhealthy because the threadworm takes nutrients from the sheep. The threadworm is a __________.
scavenger
decomposer
producer
parasite
Food, space, temperature, and disease can stop a population from increasing in size. These are known as __________.
limiting factors
mutual benefits
ecological relationships
population controls
Wolves eat squirrels and squirrels eat acorns in a forest ecosystem. Many of the oak trees, which produce acorns, suffered from a disease this year. Which of the following describes the limiting factor that caused the wolf population to decline?
the amount of water that the oak trees need;
the number of wolves that lives in the ecosystem;
the amount of space for the squirrels to bury the acorns;
The number of squirrels dying from the disease
Which of the following could cause an increase in the population of wolves in an ecosystem?
Lower birthrates in the wolves prey
A shorter growing season
Lower death rate in the wolf population
A very harsh winter
Which of the following is an example of a producer?
wolf
grass
grasshopper
snake
Which one of the following is NOT a producer?
elephant
plant
tree
a bush
All energy in an ecosystem begins with
producer
consumer
the sun
plants
Energy decreases by ___ as you move through a food chain.
half
2/3
4/5
9/10
The third consumer in a food chain is called the;
primary consumer
quaternary consumer
producer
tertiary consumer
Which one of the following shows the words in order from smallest to largest?
organism, population, community, ecosystem
ecosystem, community, population, organism
community, population, ecosystem, organism
The number of organisms that can live in an ecosystem before resources run low and animals start to die off.
limiting factors
ecosystem limit
carrying capacity
resources
Vultures eat the remains of dead animals, they are called
herbivores
omnivores
carnivores
scavengers
Factors that influence the size of a population are called
limiting factors
ecosystem limit
carrying capacity
resources
Commensalism is a _______ relationship
+/+
+/-
+/0
Mutualism is a _______ relationship
+/+
+/-
+/0
Parasitism is a _______ relationship
+/+
+/-
+/0
The relationship between a flea and a dog is an example of:
commensalism
mutualism
parasitism
When all of the food chains in an ecosystem combine, it forms a
food web
energy pyramid
energy diagram
food chains
