WorksheetsEcosystem Relationships Review
Total questions: 20
Worksheet time: 20mins
Name
Class
Date
1.
Barn owls hunt shrews. In this example what is a barn owl?
a)
Herbivore/Predator
b)
Carnivore/Prey
c)
Carnivore/Predator
2.
Sharks consume smaller fish they catch in the ocean. This is an example of what type of relationship?
a)
predator/prey
b)
parasite/host
c)
prey/predator
3.
In the tropical regions of Africa, the crocodile lies with its mouth open. The plover flies into its mouth and feeds on bits of decaying meat stuck in the crocodile’s teeth. The crocodile does not eat the plover. Instead, he appreciates the dental work. The plover eats a meal and the crocodile gets his teeth cleaned. This is an example of
a)
mutualism
b)
commensalism
c)
Parasitism:
4.
The deer tick attaches to a warm blooded animal and feeds on its blood. Ticks need blood at every stage of their life cycle. They also carry Lyme disease, an illness that can cause joint damage, heart complications, and kidney problems. The tick benefits from eating the animal's blood. Unfortunately, the animal suffers from the loss of blood and nutrients and may get sick.This is an example of
a)
mutualism
b)
commensalism
c)
Parasitism:
5.
Commensalism occurs when what happens between organisms?
a)
Both organisms are destroyed
b)
One organism benefits while the other is neither harmed or benefitted
c)
Both organisms need the other for survival
d)
One organism is harmed while the other organism benefits
6.
When an organism's energy source comes from both animals and plants, that organism is considered to be a what?
a)
predator
b)
omnivore
c)
herbivore
d)
carnivore
7.
In a grassland biome, the herbivores would compete most for
a)
Soil
b)
Space
c)
Grass
8.
In photosynthesis, _____ energy is transformed into_____ energy to be used for the plant's life processes.
a)
stored; mechanical
b)
mechanical; radiant
c)
radiant; chemical
9.
What is the function of photosynthesis?
a)
to make light
b)
to make carbon dioxide
c)
to make food for the plant
10.
Remora fish are very bony and have a dorsal fin (the fin on the back of fish) that acts like a suction cup. Remora fish use this fin to attach themselves to whales, sharks, or rays and eat the scraps their hosts leave behind. The remora fish gets a meal, while its host gets nothing. Selfish, sure, but neither gets hurt. This is an example of
a)
mutualism
b)
commensalism
c)
Parasitism:
11.
On a safari at night, a lion hunts and feeds on an antelope. In this relationship, the lion is the ____________________ and the antelope is the _________________.
a)
Parasite/host
b)
Predator/prey
c)
Prey/Predator
12.
Two male rams fighting for territory is an example of which relationship?
a)
Symbiosis
b)
Parasitism
c)
Competition
13.
True or False: A symbiotic relationship between organisms is one that benefits both organisms without causing any harm.
a)
True
b)
False
14.
When organisms rely on each other to survive, their relationship is described as what?
a)
mutalistic
b)
parasitic
c)
commensalism
d)
omnivore
15.
A high number of the same species of animals living in the same area, would most likely have what affect on their habitat?
a)
destroy most of the abiotic elements in the habitat
b)
raise the competition level for resources
c)
neither answers are correct
d)
both answers are correct
16.
Which of the following is TRUE about the predator/prey relationship?
a)
The prey is the consumer of the predator
b)
The predator is the consumer of the prey
c)
The predator is considered to be the host
d)
The prey is considered to be the parasite
17.
In a natural habitat, species compete most for which one of the following resources?
a)
shelter
b)
oxygen
c)
food
d)
space
18.
True or False: Decomposers are those organisms that consume dead or dying organisms without helping their environment in any way.
a)
True
b)
False
19.
Which of the following would be considered to be prey?
a)
an animal that has to hunt for its food
b)
an animal that is eaten by another animal
c)
an organism that makes it own food
d)
an organism that feeds on the blood of another animal
20.
When animals have to fight each other for their basic needs, we call this what?
a)
Natural selection
b)
Competition
c)
Predation
d)
Mutualism
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