WorksheetsMarine Ecology Assessment
Total questions: 25
Worksheet time: 25mins
Name
Class
Date
1.
1.________________ includes the nonliving factors in the environment.
a)
Biotic
b)
Abiotic
c)
Competition
d)
Parasitism
2.
2.______________________________ occurs when one species benefits and the other is unaffected.
a)
Commensalism
b)
Parasitism
c)
Mutualism
d)
Competition
3.
3. ______________ occurs when both species benefit.
a)
Competition
b)
Parasitism
c)
Mutualism
d)
Commensalsm
4.
4. When one species benefits and the other is harmed. ____________________.
a)
Competition
b)
Parasitism
c)
Mutualism
d)
Commensalism
5.
5. ________________ occurs when species need to compete for resources such as food, shelter or a mate.
a)
Mutualism
b)
Parasitism
c)
Commensalism
d)
Competition
6.
6. Living factors are ________________.
a)
Niche
b)
Biotic
c)
Abitoic
d)
Detritus
7.
7. How do intraspecific and interspecific competition differ?
a)
Interspecific competition occurs when members of the same species compete. Intraspecific competition occurs when members of different species compete.
b)
Intraspecific competition occurs when members of the same species compete. Interspecific competition occurs when members of different species compete.
8.
8. What is a limiting resource?
a)
Resources that are in short supply which, in turn, can decrease the rate of growth for a population.
b)
The largest size of a population that can be sustained with the given number of resources.
c)
The total amount of organic energy created by primary producers.
d)
The total amount of renewable organic matter produced by the organisms at each trophic level.
9.
9. What is the difference between nekton and benthos marine lifestyles?
a)
Nekton are free floating and cannot swim against the current. Benthos live on the ocean floor.
b)
Benthos can swim against the current. Nekton live on the ocean floor.
c)
Nekton can swim against the current. Benthos live on the ocean floor.
d)
Nekton live on the ocean floor. Benthos float with the current.
10.
10. Which scientist originally explained the process of natural selection?
a)
Sylvia Earle
b)
Charles Darwin
c)
Eugenie Clark
d)
Gregor Mendel
11.
11. ___________ organisms live in the water column. ___________ organism live at the ocean bottom.
a)
Plankton, Nekton
b)
Pelagic, Nekton
c)
Benthos, Pelagic
d)
Pelgic, Benthos
12.
12. What is the total amount of renewable organic matter produced by the organisms at each trophic level?
a)
Biomass
b)
Standing stock
c)
Net primary productivity
d)
Gross primary productivity
13.
13. What refers to the total amount of phytoplankton present in the water at a given time?
a)
Standing stock
b)
Biomass
c)
Net primary productivity
d)
Gross primary productivity
14.
14. When non-living organic matter is broken down by decomposers into carbon dioxide, water and essential nutrients, it is called
a)
Ecological niche
b)
Biomass
c)
Nutrient regeneration
d)
Standing stock
15.
15. On average, only about ____% of energy is passed on to each trophic level.
a)
10
b)
5
c)
20
d)
15
16.
16. Consumers are __________ that can consume both primary producers or consumers.
a)
Nekton
b)
Autotrophs
c)
Heterotrophs
d)
Benthos
17.
17. _____________ are organisms capable of photosynthesis and gain their energy from sunlight.
a)
Heterotrophs
b)
Autotrophs
c)
Nekton
d)
Benthos
18.
18. Coral and Symbiodinium have a relationship in which the Symbiodinium provides the coral with oxygen and nutrients. The coral provides Symbiodinium a safe habitat to live. This is an example of
a)
Mutualism
b)
Commensalism
c)
Parasitism
19.
19. Isopods and some species of fish have a relationship in which the isopod will consume the fish's tongue and then eats whatever it attempts to consume. This is an example of
a)
Commensalism
b)
Parasitism
c)
Mutualism
20.
20. Barnacles and whales have a relationship in which the barnacles attach to the whale’s body but do not harm it. This is an example of
a)
Parasitism
b)
Mutualism
c)
Commensalism
21.
21. An organism’s ecological role within the ecosystem is it’s
a)
Habitat
b)
Niche
c)
Ecosystem
d)
Symbiosis
22.
22. The largest size that a population can sustain based on the number of resources is
a)
Interspecific competition
b)
Limiting resources
c)
Carrying capactiy
d)
Standing stock
23.
23. Reduction of resources due to overcrowding can cause a population’s growth to
a)
Decrease
b)
Increase
c)
Stay the same
d)
Homeotherms
24.
24. Dead organic matter in solid form is referred to as
a)
Detritus
b)
Parasite
c)
Decomposer
d)
Biomass
25.
25. A _________________ is an area where an organism lives.
a)
Niche
b)
Habitat
c)
Symbiosis
d)
Ecosystem
100 %
