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Unit 3 Study Guide: Interdependent Relationships

Total questions: 19

Worksheet time: 10mins

Name
Class
Date
1.
The variety of species that exist in an environment
a)
carrying capacity
b)
biosphere
c)
biodiversity
d)
habitat
2.
When a number of organisms exceeds the capacity of the environment that supports them it is called __________.
a)
overpopulation
b)
under population
c)
thriving
d)
biodiversity
3.
The variety of species that exist in an environment is called ______.
a)
overpopulation
b)
pollution
c)
biodiversity
d)
biosphere
4.
Carrying capacity is...
a)
a failing ecosystem
b)
resources
c)
greatest number of individuals in a population that an ecosystem can support
d)
All the squirrels in a forest
5.
___________ blooms can steal the oxygen and nutrients other organisms need to live
a)
cyanobacteria
b)
population
c)
pink algae
d)
oil
6.
The population that once boomed may experience a rapid decrease. This is why __________ is one of the most common effects of overpopulation.
a)
jumping off cliffs
b)
starvation
c)
hiding
d)
degradation
7.
Changes in limiting factors, like a decrease in predators or an increase in food, can cause population booms.
a)
True
b)
False
8.
The effects of overpopulation include ALL except...
a)
decrease in biological diversity
b)
starvation
c)
degradation of habitat
d)
thriving organisms
9.
The number and variety of ecosystems allow Earth’s biosphere to support millions of _______.
a)
plants
b)
animals
c)
species
d)
lemmings
10.
A species is officially declared as “endangered” when its population is too small to ensure its continued existence.
a)
FALSE
b)
TRUE
11.
The most effective conservation efforts are those that focus on a specific threat.
a)
TRUE
b)
FALSE
12.

There are many different actions that human societies can take to protect species that are already at risk (endangered species). Choose ALL that apply

a)
  1. Climate change - including laws that reduce human cause pollution (think electric cars)

b)

Continue building large developments on organisms ecosystems

c)

Stop excessive hunting - conservation may take the form of laws that make it illegal to hunt a given species.

d)
  1. Preventing nonnative species moving in to other habitats

13.

Overpopulation can cause ____________ in an ecosystems biodiversity. (think mormon crickets)

a)
Increase
b)
Decrease
c)
No significant change
14.
The primary goal is to ensure a stable or increasing population of a species that is endangered
a)
TRUE
b)
FALSE
15.

Name 3 human factors that cause decline of species populations.

a)

Logging, hunting, and farming.

b)
  • Pollution, global warming, and sea-level rise worsen the effects of these activities

c)

Humans preventing nonnative species from migrating

d)

Destroy habitats

16.

Choose 3 ways habitats are affected by overpopulation.

a)

a decrease in biodiversity (ex: cyanobacteria)

b)

starvation

c)

a degradation of habitat (ex: mormon crickets)

d)

rivers are cleaner

17.

What is the term for the maximum population size that an environment can sustain indefinitely?

a)

Carrying capacity

b)

Overpopulation

c)

Biodiversity

d)

Habitat

18.

Which of the following is NOT a consequence of overpopulation?

a)

Increased resource consumption

b)

Pollution

c)

Habitat destruction

d)

Enhanced biodiversity

19.

True or False: A decrease in food supply can lead to a population decline.

a)

False

b)

True