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Marine science semester exam questions and answers
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Marine science semester exam questions and answers
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Marine science semester examquestions and answers
What percentage of the surface of the earth is covered by seawater - Answer -71%
Oceanography is the study of - Answer -Physical and geological aspects of the ocean
Marine biology is the study of - Answer -The living organisms that inhabit the seas and
their interactions with each other and their environment
El niño - Answer -Equatorial pacific ocean
The first step in the scientific process is - Answer -Making observations
Ecology is - Answer -The study of relationships between organisms and their
interactions with the environment (ecosystems)
An example of abiotic factors influencing marine organisms - Answer -Salinity, sunlight,
density, temperature, etc.
Regions above or below the optimal range of an envoronmental variable are called -
Answer -Zone of stress
The most important marine photosynthetic organisms are - Answer -Blue - green algae,
phytoplankton
Animals that obtain their body heat from internal metabolism are called - Answer -
Endothermic
A measure of the solutes in water determines the - Answer -Salinity
The movement of water across a membrane in response to a gradient of solute
concentration is called - Answer -Osmosis
Am atmosphere of pressure in psi equals - Answer -14.7
The pressure of the oceans increases by one atmosphere for every ____ meter
increase in depth - Answer -10
Those organisms that thrive in an environment free of oxygen are called - Answer -
Anaerobic
, ____ is when one organism successfully outcompetes another organism and excludes it
from a particular are or niche - Answer -Competitive exclusion
The niche of a species is best described as - Answer -The occupation (needs and role)
Membes of the same species living in the same area and interacting are - Answer -A
population
The primary source of energy for primary production is - Answer -The sun
With each change in trophic level we can expect a ___ % transfer of biomass - Answer -
10
Nutrients are reintroduced into the upper reaches of the oceans from deeper areas by
the process of - Answer -Upwelling
Gaseous oxygen formed in the earth's atmosphere as a result of - Answer -
Photosynthesis
A small area more or less landlocked is called - Answer -Sea
The region of the mantle below the crust is called - Answer -Athenosphere
The oceanic crust is primarily comprised of - Answer -Basalt
When pangea first broke up it formed - Answer -Laurasia and gondwanaland
A region where old oceanic crust is being destroyed is called - Answer -Subduction
zone
Midocean ridges form - Answer -Where oceanic crust is cracked and magma is
emerging
The continental rise is composed of sediments deposited from - Answer -Underwater
landslides
The deepest underwater trench in the world is - Answer -Mariana Trench
At the base of a steep continental slope a gentle slope is called - Answer -The
continental rise
Seamounts are formed from - Answer -Underwater volcanoes
Sediment that are composed of the remains of living organisms are called - Answer -
Biogenenous
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