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Niche and Symbiosis

Total questions: 16

Worksheet time: 18mins

Name
Class
Date
1.

The close relationship between two different species in an ecosystem

a)

Biosphere

b)

Ecology

c)

Symbiosis

d)

Environment

2.

Organisms that can interbreed and produce fertile offspring.

Example: all humans are the same species with the scientific name Homo sapiens

a)

Symbiosis

b)

Population

c)

Ecosystem

d)

Species

3.

A symbiotic relationship that benefits both members of two different species.

a)

Predator-Pray

b)

Commensalism

c)

Mutualism

d)

Parasitism

4.
The idea that no two species within an ecosystem can occupy the exact same niche
a)
niche overlap
b)
niche differentiation
c)
competitive exclusion
d)
niche decay
5.
An organism's _________ is defined as the environment in which it lives.
a)
habitat
b)
niche
c)
social structure
d)
ecosystem
6.
Which species tend to go extinct more frequently?
a)
narrow niche creatures
b)
broad niche creatures
7.

The ecological role an organism performs in their specific environment is considered the organism's...

a)

Habitat

b)

Population

c)

Biome

d)

Niche

8.

"Organisms that have moved to a location that does not naturally support them."

a)

Invasive species

b)

Destructive species

c)

Unwelcomed species

d)

Infected species

9.

the differentiation of niches that enables similar species to coexist in a community

a)

character displacement

b)

climax community

c)

resource partitioning

d)

pioneer species

10.
The ecological niches of three bird species are shown in the diagram. What is the advantage of each bird species having a different niche?
a)
As more birds feed higher in the tree, available energy increases.
b)
More abiotic resources are available for each bird.
c)
Predators are less likely to feed on birds in a variety of locations.
d)
There is less competition for food.
11.

An organism’s habitat provides _____________________.

a)

food, water, shelter, and space.

b)

food, water, and clothes.

c)

only food.

d)

video games, ninjas, and baked beans.

12.

A squirrels niche would be _________________.

a)

hunting prey and providing meat for other squirrels.

b)

searching for fish to eat in the ocean.

c)

staying busy storing nuts and seeds for winter.

d)

help decompose other animals and plants.

13.

A squirrels habitat would be _____________.

a)

Ocean

b)

Arctic

c)

Forest

d)

Dessert

14.
The resources a population actually uses as a result of competition.
a)
niche
b)
realized niche
c)
fundamental niche
d)
competition
15.
Two closely related species of birds live in the same tree.  Species A feeds on ants and termites, while Species B feeds on caterpillars.  The two species coexist successfully because –
a)
each occupies a different niche
b)
they interbreed 
c)
they use different methods of reproduction
d)
birds compete for food
16.
This is known as the set of resources a population is theoretically capable of using in the wild.
a)
niche
b)
realized niche
c)
fundamental niche
d)
competition