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Ecology Marathon

Total questions: 44

Worksheet time: 38mins

Name
Class
Date
1.

What is a relationship between two organisms

a)

Symbiosis

b)

Mutualism

c)

Decomposers

d)

Consumers

2.

Johnathan collects bugs. Whether flying, crawling, or digging, he has a vast collection of organisms. When returning back from a family vacation, he finds half of his insects have died. What is an instant result from the death of his insects?

a)

a reduction in biodiversity

b)

increased CO2 emission

c)

New insect species introduced

d)

a decline the microorganisms in the insect ecosystem

3.

It was discovered in recent times that a once thriving, ancient forest now has a low biodiversity and contains many species who's very existence is threatened. Which of these would cause the QUICKEST and most drastic decrease in biodiversity in this forest?

a)

a virus that infects certain grass species

b)

reduced daylight hours which reduce photosynthesis opportunities

c)

deforestation

d)

introduction of multiple predator species

4.

Global warming is the buildup of excess carbon in the atmosphere. One of the main results of global warming is:

a)

decrease in breathable oxygen with an increase in toxic oxygen

b)

decreased Solar energy

c)

warmer oceans leading to more hurricanes

d)

decreased atmospheric temperature and weather changes

5.

The removal of which organism would cause the least damage to the ecosystem's stability?

a)

hawk

b)

grass

c)

rattlesnake

d)

tarantula

6.

Decomposers can be found where on the food chain?

a)

1st level

b)

2nd level

c)

3rd level

d)

Anywhere on the food chain.

7.

The secondary consumer here is?

a)

The snake

b)

The Eagle

c)

The mouse

d)

The plant

8.
What is an ecosystem?
a)
A system of living and non-living things working together
b)
The flow of energy and matter
c)
Everything in the environment
d)
Photosynthesis
9.
What percentage of energy is passed on to each trophic level?
a)
10%
b)
50%
c)
90%
d)
100%
10.
A species that is not native to an area is called: 
a)
Native Species
b)
Natural Species
c)
Invasive Species
d)
Symbiotic Species
11.
What would most likely happen if an ecosystem no longer received sunlight?
a)
The number of herbivores would increase
b)
The number of plants would increase
c)
all organisms would adapt
d)
All living organisms would eventually die
12.

What is an invasive species?

a)

a species that is helpful to the environment

b)

a species that has been introduced to an area and causes harm to the ecosystem

c)

both a and b

d)

neither a nor b

13.

Both species benefit

a)

symbiosis

b)

parasitism

c)

mutualism

d)

commensalism

14.

One species benefits, the other is unaffected

a)

symbiosis

b)

parasitism

c)

mutualism

d)

commensalism

15.

One species benefits, the other species is harmed

a)

symbiosis

b)

parasitism

c)

mutualism

d)

commensalism

16.

Barnacles create home sites by attaching themselves to whales. As the barnacle is a filter feeder, it also gets access to more water (and more food) due to the relationship. Whale is unaffected.

a)

symbiosis

b)

parasitism

c)

mutualism

d)

commensalism

17.

Ostriches and gazelles feed next to each other. They both watch for predators. Because the visual abilities of the two species are different, they can each identify threats that the other animal may not see as readily.

a)

symbiosis

b)

parasitism

c)

mutualism

d)

commensalism

18.

Mistletoe extracts water and nutrients from the spruce tree to the detriment (ill effect) to the spruce

a)

symbiosis

b)

parasitism

c)

mutualism

d)

commensalism

19.

Honey guide birds alert and direct badgers to bee hives. The badgers then expose the hives and feed on the honey first. Next the honey guide birds eat.

a)

symbiosis

b)

parasitism

c)

mutualism

d)

commensalism

20.

Tapeworms reside in human intestine and take nutrients from the human

a)

symbiosis

b)

parasitism

c)

mutualism

d)

commensalism

21.

Epiphytes are a class of plants that grow in the crooks of tree branches. They simply use the tree branches as a way to be higher—closer to the sunlight needed for photosynthesis. The trees aren’t affected by this relationship.

a)

symbiosis

b)

parasitism

c)

mutualism

d)

commensalism

22.

E. Coli is a bacteria that lives in the gut of humans. The human provides the ideal habitat for e coli reproduction and the e coli provides the extra vitamin K that we use.

a)

symbiosis

b)

parasitism

c)

mutualism

d)

commensalism

23.

The tick feeds off the blood of the deer.

a)

symbiosis

b)

parasitism

c)

mutualism

d)

commensalism

24.

Remoras attach themselves to a shark’s body. They travel with the shark and feed on the leftover food scraps after the shark has finished its meal, not taking any food from the shark or slowing it down when swimming.

a)

symbiosis

b)

parasitism

c)

mutualism

d)

commensalism

25.

One organism hunts and eats another organism.

a)

predation

b)

mutualism

c)

carnivore

d)

parasitism

26.

This occurs when niches overlap between species and they have to compete for resources.

a)

competition

b)

interspecific

c)

parasite

d)

intraspecies

27.
A community of living and nonliving things in their natural environment makes up a 
a)
food web
b)
ecosystem
c)
food chain
d)
population
28.
What is a herbivore?
a)
an animal that gets energy from eating other animals
b)
an organism that gets energy from eating only plants
c)
an animal that gets energy by eating both plants and other animals
d)
an animal that eats only herbs
29.
An organism that gets energy from eating other organisms is a ______________.
a)
producer
b)
consumer
c)
decomposer
d)
prey
30.
An organism that gets energy from breaking down dead organisms, non-living material or waste is a(an) ___________.
a)
producer
b)
consumer
c)
decomposer
d)
autotroph
31.
What is a carnivore?
a)
an animal that gets energy by eating other animals
b)
An animal that gets energy by eating only plants
c)
an animal that gets energy by eating both plants and animals
d)
an animal that makes its own energy through photosynthesis
32.
A connection of food chains with many food energy paths in an ecosystem is a ____________.
a)
ecosystem
b)
food web
c)
environment
d)
population
33.
Which of the following is NOT a consumer?
a)
grass
b)
dog
c)
shark
d)
fish
34.
Which of the following is a herbivore?
a)
cricket
b)
frog
c)
hawk
d)
shrew
35.
In the energy pyramid here, how much of the energy in each level gets lost as heat or used by the organism for survival?
a)
80%
b)
90%
c)
10%
d)
20%
36.
What percentage of energy is passed on to each tropic level?
a)
10%
b)
50%
c)
90%
d)
100%
37.
The arrows in a food chain or web represents what?
a)
They point to the organism that is being eaten.
b)
It shows how sunlight flows within an ecosystem.
c)
They show what direction the energy is flowing between organisms. 
d)
They represent how water is transferred within a habitat.
38.

Which process removes carbon dioxide from the atmosphere?

a)

deforestation

b)

tree farms

c)

burning fossil fuels

d)

cellular respiration

39.

Which of the following is correct?

a)

There is as much carbon on earth as when it was formed

b)

Carbon is being created whenever it is recycled

c)

Carbon is lost every time it is recycled

d)

Carbon changes to different forms and is never recovered

40.

What organisms form fossils?

a)

animals

b)

plants and animals

c)

CaCO2

d)

sedimentary rocks

41.
When humans burn fossil fuels, most of the carbon quickly enters the                       as carbon dioxide.
a)
Water
b)
Atmosphere
c)
Sun
d)
Air
42.

PREDATION is a form of interaction where......

a)

the organism that benefits is the predator

b)

the organism that benefits is the prey

c)

both organisms benefit

d)

neither organism benefits

43.
All energy transformations in an ecosystem begin with
a)
a scavenger
b)
the sun
c)
a decomposer
d)
a herbivore
44.
What does a Secondary Consumer eat?
a)
Tertiary Consumers
b)
Primary Consumers
c)
Producers
d)
Secondary Consumers