WorksheetsAICE Marine Unit 4 Interactions in Marine Ecosystems
Total questions: 41
Worksheet time: 22mins
The zone of lighted ocean in which marine autotrophs tap more energy than they use to stay alive are called:
the photic zone
the euphotic zone
the abyssal zone
the mesopelagic zone
the hadal zone
The 2 main inorganic nutrients necessary for the success of marine autotrophs are:
carbon dioxide and carbohydrates.
glucose and oxygen.
nitrates and phosphates
nitrates and carbohydrates
phosphates and carbohydrates.
The more efficient photosynthesizers of the two algae listed:
diatom
dinoflagellate
both
neither
What is produced in primary productivity?
carbon dioxide
cold, blue light
carbohydrates
gametes
carbon atoms
The organisms that consume autotrophs are called:
primary producers.
heterotrophs.
secondary producers.
secondary consumers.
top carnivores.
Organisms that can exist with light as an energy source and an inorganic form of carbon and other raw materials:
are called photoautotrophs.
do not exist in nature.
are called heterotrophs.
are best classified as decomposers.
Check all that apply
Which type of organism obtains energy by metabolizing molecules produced by other organisms?
autotrophs
heterotrophs
decomposers
Which of the following statements best describes the relationship between photosynthesis and respiration?
Photosynthesis is the reversal of the biochemical pathways of chemosynthesis.
Photosynthesis stores energy in complex organic molecules, while respiration releases it
Photosynthesis occurs only in plants and respiration occurs only in animals.
Photosynthesis and chemosynthesis allow for autotrophs to harness energy from the sun and fixate the energy into ecosystems.
Gross primary productivity is determined by the different between photosynthesis and cellular respiration.
During an experiment, a scientist observed prokaryotes that lived near volcanic vents deep in the ocean. The scientist MOST likely observed:
photoautotrophs.
chemoautotrophs.
heterotrophs.
photoheterotrophs.
What is the term for each step in the transfer of energy and matter within a food web?
energy path
food chain
trophic level
food pyramid
What goes in Box 5 of the food web in the picture?
herbivores
scavengers
carnivores
decomposers
What are the three kinds of ecological pyramids?
producer, consumer, and decomposer
energy, nutrient, and trophic
energy, biomass, and numbers
biotic, abiotic, and nutrient
Matter can recycle through the biosphere because:
matter does not change into new compounds.
matter is assembled into chemical compounds.
biological systems do not use up matter, they transform it.
biological systems use only carbon, oxygen, hydrogen, and nitrogen.
Nitrogen fixation is carried out primarily by:
humans
plants
bacteria
consumers
The movements of energy and nutrients through living systems are different because:
energy flows in one direction, and nutrients recycle.
energy is limited in the biosphere, and nutrients are always available
nutrients flow in one direction, and energy recycles.
energy forms chemical compounds, and nutrients are lost as heat.
The chemical energy stored in a plant is an example of:
kinetic energy
nuclear energy
solar energy
potential energy
radiant energy
The correct, chemically balanced equation for photosynthesis is:
12CO2 + 6H2O + Light Energy ---> C6H12O6 + 12O2
6CO2 + 12H2O + Light ENERGY---> C6H12O6 + 6H2O + 6O2
12O + C6H12O6 + 6H2O ---> 6CO2 +12H2O + Light ENERGY
12O2 + C6H12O6 + 12H2O ---> 6CO2 + 12H2O + Light ENERGY
6O2 + C6H12O6 + 6H2O
---> 6CO2 + 12H2O + Light ENERGY
A secondary consumer would eat:
tertiary consumers
dinoflagellates, the protists associated with red-tide
bacteria
herbivores
phytoplankton
In a pyramid of biomass, the trophic level of which organism would have the least biomass?
Phytoplankton, are eaten by copepods, which are eaten by squid, which are eaten by sea turtles.
Phytoplankton
Copepods
Squid
Sea turtles
none of these, all trophic levels would be of equal biomass
The equation to find net primary productivity is:
GPP = R + NPP
R = NPP – GPP
NPP = GPP - R
NPP = GPP + R
GPP = NPP – R
Which of the following is/are TRUE regarding tube worms?
Tube worms gain their nutrition from chemosynthetic bacteria who use heat energy as a source of energy to synthesize glucose
Tube worms possess a plume which draws in hydrogen sulfide that benefits their symbiotic bacteria who oxidize the hydrogen sulfide gas to provide the energy source to synthesize organic compounds like glucose
Tube worms are the only organisms at hydrothermal vents that have chemosynthetic bacteria living in their tissues.
Tube worms are not actually animals, they are marine plants.
All of these statements are false regarding tubeworms.
The symbiotic relationship between the coral and its zooxanthellae is:
Mutualistic
Commensalistic
Parasitic
It's not symbiotic - it's actually a predator/prey relationship!
The symbiotic relationship between the Riftia HTV tube worm and its chemoautotrophic bacteria that live within it is:
Mutualistic
Commensalistic
Parasitic
It's not symbiotic - it's actually a predator/prey relationship!
What word describes all the individuals of a single species living in an area?
Community
Ecosystem
Biosphere
Population
Which word describes an organism's biotic and and abiotic environment?
Ecosystem
Niche
Population
Community
What type of pyramid is this?
Pyramid of numbers
Pyramid of biomass
Pyramid of energy
Ooh, the owl is so cute I can't think!
a way of describing the feeding relationships between organisms in a linear sequence
Trophic Level
Food
Food Web
Food Chain
The base of the food web in open ocean ecosystems is:
Mangrove trees
Phytoplankton
Sea grass
Zooplankton
What type of pyramid is this?
Pyramid of numbers
Pyramid of biomass
Pyramid of energy
Giza
What process brings nutrients and cold water from the deep ocean to the surface?
Upwelling
Uptake
Upcurrents
Downwelling
What process is the flow of water from land to the ocean caused by precipitation?
Runoff
Extrusion
Slough
Influent
Which of the following elements are found in all macromolecules? (Select all that apply).
Which macromolecule is used as our main source of energy?
Lipids/Fats
Nucleic Acids
Proteins
Carbohydrates
This macromolecule breaks down into sugars such as glucose.
Lipids/Fats
Nucleic Acids
Protein
Carbohydrates
C H O
C H O N
C H O N P
C H O N S
