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Worksheets1.3 Interactions Among Living Things
Total questions: 15
Worksheet time: 13mins
Name
Class
Date
1.
An organism's particular role in its habitat, or how it makes its living, is called its
a)
carrying capacity.
b)
ecosystem.
c)
competition.
d)
niche.
2.
The behaviors and physical characteristics of species that allow them to live successfully in their environment are called
a)
habitats.
b)
limiting factors.
c)
biotic factors.
d)
adaptations.
3.
The struggle between organisms to survive in a habitat with limited resources is called
a)
competition.
b)
predation.
c)
symbiosis.
d)
parasitism.
4.
When a jellyfish paralyses a tiny fish with its poisonous tentacles, the jellyfish is the
a)
predator.
b)
prey.
c)
host.
d)
parasite.
5.
A close relationship between two species that benefits at least one of the species is called
a)
natural selection.
b)
symbiosis.
c)
adaptation.
d)
competition.
6.
The bacteria that live in your intestine and help break down food are an example of which type of interaction?
a)
competition
b)
mutualism
c)
parasitism
d)
predation
7.
Which of the following describes an interaction in which one organism kills and eats another?
a)
competition
b)
symbiosis
c)
predation
d)
mutualism
8.
Which of the following is an example of a predator adaptation?
a)
a porcupine's needles
b)
a shark's powerful jaws
c)
a frog's bright colors
d)
a plant's bright flowers
9.
When a flea is living on a dog, the dog is the
a)
parasite.
b)
host.
c)
predator.
d)
prey.
10.
Mutualism, commensalism, and parasitism are the three types of
a)
symbiotic relationships.
b)
predation.
c)
competition.
d)
prey adaptations.
11.
A hawk building its nest on an arm of a saguaro cactus is an example of
a)
commensalism.
b)
mutualism.
c)
parasitism.
d)
predation.
12.
A tapeworm, which is living inside a mouse's body is a predator.
a)
True
b)
False
13.
An insect looks like a leaf, so it blends in with its surroundings and is hard for predators to see. The insect's characteristic is an example of commensalism.
a)
True
b)
False
14.
In predation, the organism that kills another organism for food is the prey.
a)
True
b)
False
15.
Both species benefit in the type of symbiosis called mutualism.
a)
True
b)
False
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