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WorksheetsAks 6A Ecology
Total questions: 18
Worksheet time: 10mins
Name
Class
Date
1.
Which of these would most likely be a keystone species?
a)
Sea Otter
b)
Sea Urchin
c)
Kelp
d)
Horseshoe Crabs
2.
Which of these would NOT be true of a specialist species?
a)
They are more likely to go extinct during changes to an ecosystem.
b)
They have a very narrow niche.
c)
They often lose in competition for resources to generalists.
d)
They often feed on a very specific diet.
3.
People in industrialized countries are more likely to eat this in their diet in comparison with people in developing countries.
a)
Wheat
b)
Rice
c)
Beans
d)
Beef
4.
Of the following, which occupies the lowest trophic level?
a)
Spider
b)
Bat
c)
Rabbit
d)
Tiger
5.
Introduced or invasive species are often difficult because:
a)
They contribute to habitat fragmentation
b)
They do not adapt well to new environments
c)
They increase biodiversity
d)
They often lack natural predators
6.
A bird nests in a tree. The tree does not gain any benefit and is not harmed. What relationship best describes this:
a)
commensalism
b)
parasitism
c)
mutualism
d)
mimicry
7.
Which of the following is a nonrenewable resource?
a)
wind
b)
water
c)
solar
d)
fossil fuels
8.
Humans impose the largest negative impact on the carbon cycle by ________________
a)
cultivating crops
b)
burning fossil fuels
c)
harnessing solar power
d)
mining
9.
Which of the following would have the largest biomass in any given terrestrial ecosystem?
a)
autotrophs
b)
secondary consumers
c)
primary consumers
d)
tertiary consumers
10.
If you wanted to predict which biome you would find in an area, what two things would you would need to know about that area?
a)
the annual soil nutrient levels and relative humidity
b)
the annual levels of light and length of day
c)
its annual rainfall and temperature
d)
the annual daytime high and nighttime low temperatures
11.
If the number of births is greater than the number of deaths in a population, what will happen to the growth of the population?
a)
It will increase.
b)
It will decrease.
c)
It will stay the same.
d)
It will fluctuate.
12.
Which factor is a density-dependent limiting factor on the population of a species?
a)
seasonal variation
b)
natural disasters
c)
unusual weather
d)
predation
13.
A population will most likely stop growing when it reaches its:
a)
Growth limit
b)
Exponential limit
c)
Carrying Capacity
d)
Metapopulation
14.
A population is...
a)
A group of species in one area
b)
Multiple species that live in one area
c)
All of the living and nonliving things in an area
d)
All biotic and abiotic factors in an ecosystem
15.
Individuals with favorable traits survive, reproduce, and pass their traits onto their offspring. This is called:
a)
Mutation
b)
Adaptation
c)
Evolution
d)
Natural Selection
16.
In this Food Web Pyramid Which type of consumer gets only 10% of the energy stored in plants?
a)
Herbivore
b)
Carnivore
c)
Omnivore
d)
Top carnivore
17.
In the energy pyramid shown, which organism has the least amount of biomass?
a)
Producers
b)
Herbivores
c)
Carnivores
d)
Top Predator
18.
What percentage of energy is passed on to each tropic level in an energy pyramid?
a)
10%
b)
50%
c)
90%
d)
100%
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