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Interactions Among Organisms

Total questions: 20

Worksheet time: 13mins

Name
Class
Date
1.

Which of the following could organisms compete for?

a)

food

b)

water

c)

living space

d)

sunlight

2.

When finches left their origin (scientists think perhaps the Caribbean) and ended up on the Galapagos Islands, they were _____ from their original home.

a)

immigrating

b)

emigrating

3.

Which of the following occurs when individuals join a population?

a)

immigration

b)

emigration

4.

Populations _____ when individuals are born.

a)

increase

b)

decrease

c)

stay the same

5.

A symbiotic relationship in which both organisms benefit is called

a)

mutualism

b)

commensalism

c)

parasitism

6.

A symbiotic relationship in which one organism benefits while the other is harmed is called

a)

mutualism

b)

commensalism

c)

parasitism

7.

A symbiotic relationship in which one organism benefits and the other remains unaffected is called

a)

mutualism

b)

commensalism

c)

parasitism

8.

Which of the following is an example of an abiotic factor?

a)

temperature

b)

squid

c)

coral reef

d)

bacteria

9.

Which of the following is the best example of mutualism?

a)

a dog steals a bone from another dog

b)

a tiger hunts and eats a deer

c)

a bird eats ticks from a zebra's skin

d)

a bee stings a jogger

10.

Monkeys helping to clean bugs off of each other's back is a form of

a)

competition

b)

cooperation

c)

parasitism

d)

abiotic factors

11.

What type of symbiosis occurs when hummingbirds feed on nectar from flowers thus the flowers are pollinated by hummingbirds as they move from flower to flower?

a)

commensalism

b)

mutualism

c)

parasitism

d)

predation

12.
Hawks and owls eat the same thing. That relationship is called ___________.
a)
adaptation
b)
competition
c)
parasitism
d)
mutualism
13.

Which of the following describes a relationship in which two species interact closely together?

a)

resource

b)

limiting factor

c)

carrying capacity

d)

symbiosis

14.

Lion and Zebra - The lion hunts and kills the zebra for its food. This is an example of which type of interaction among organisms?

a)

predator-prey

b)

mutualism

c)

commensalism

d)

parasitism

15.

Cattle egrets feed in fields among cattle. The egret gets easy access to flying insects stirred up by the cattle, and the cattle don't care if they are there or not. This relationship is an example of

a)

mutualism

b)

commensalism

c)

competition

d)

parasitism

16.

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

17.

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

18.

When a jellyfish paralyses a tiny fish with its poisonous tentacles, the jellyfish is the

a)

predator

b)

prey

c)

host

d)

parasite

19.
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
20.

When this isopod enters the fish through its gills, consumes the fish's tongue, then replaces the tongue, it is acting as a

a)

predator

b)

prey

c)

parasite

d)

friend