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WorksheetsPhotosynthesis in the Ocean
Total questions: 40
Worksheet time: 25mins
Producers are able to make their own food through the process of photosynthesis or chemosynthesis.
True
False
Cyanobacteria are an example of ancient phytoplankton responsible for increasing the amount of oxygen on Earth and forming the ozone layer which protects living things from the Sun’s harmful solar radiation.
True
False
Microscopic organisms in the ocean called chloroplasts photosynthesize and are responsible for producing more than half of the oxygen on Earth.
true
false
Producers in the aquatic and marine environments get the gas needed for photosynthesis from the
sun
sand
soil
water
Organisms that can make their own food are called
heterotrophs
autotrophs
Harmful Algae Blooms or HABs
chloroplasts
What role do chloroplasts play in photosynthesis?
Chloroplasts absorb solar energy and convert it to chemical energy.
Chloroplasts absorb glucose from the surrounding environment.
Chloroplasts are responsible for absorbing ozone in the troposphere.
None of the above.
In an experiment, plant A is placed in a brightly lit area and plant B is placed in a dark area. Other conditions are held similar. What will most likely occur when comparing the two plants over time?
Photosynthesis will not occur in either plant.
The rate of photosynthesis will speed up in Plant B only.
The rate at which oxygen is released from Plant A will be less than that of Plant B.
Glucose production by Plant A will be greater than Plant B
In an experiment on aquatic plants, plant A is placed in a brightly lit area and plant B is placed in a dark area. Other conditions are held similar. What will be true of the water in the samples?
Sample A will have a higher pH B
Sample A will have a lower pH than B
Sample A will have less glucose
Which word equation represents the process of photosynthesis?
glucose + water --> oxygen + carbon dioxide
carbon dioxide + water --> glucose + oxygen
chlorophyll + water --> glucose + oxygen
glucose + oxygen --> carbon dioxide + water
Most of the oxygen in our atmosphere comes from processes carried out
by phytoplankton
by forests
by factories
by grass
The complex process in which the element carbon moves throughout the living and nonliving components of the Earth system is known as
photosynthesis.
harmful algal bloom.
the Carbon Cycle.
chlorophyll imagery.
What colors are most reflected by chlorophyll?
red and green
green and blue
blue and violet
green and yellow
Light absorbing and reflecting chemicals are called...
chloroplasts
mitochondria
tanins
pigments
When I see a red color on a shirt, what has happened?
All colors of the visible light spectrum are being absorbed and red is being reflected
All colors of the visible light spectrum are being reflected and red is being absorbed
Green pigments found in kelp are
phycobilins
carotenoids
chlorophylls
Yellow and orange pigments found in kelp are
phycobilins
chlorophylls
carotenoids
Our chromatography experiment's purpose was to
find out which photosynthetic pigments are found in different seaweeds
compare the rate of photosynthesis in green, red and brown algae
convert light energy into stored chemical energy
Why do different seaweeds have different combinations of photosynthetic pigments?
to make them different colors
different seaweeds are adapted to photosynthesize in water of varying depths and therefore need to absorb varying wavelengths of light
to increase oxygen production
What caused the Gulf of Mexico's Dead Zone?
over-fishing
a lot of trash flowed there
excess nutrients from farm fertilizer
a nuclear test was done there during WW2
The effects of Harmful Algae Blooms, also called "red tides" are directly caused by
neurotoxic pollution from factories
neurotoxins secreted by large blooms of phytoplankton
burning fossil fuels
overfishing Dungeness crabs
The photic zone refers to
parts of the ocean where photosynthesis does not occur
coastal areas only
the top 200m (650ft) of ocean where light can penetrate
the part of the ocean where you can find photon torpedos
Many deep sea animals are red because
the only visible light in the deep sea is red, so they are camouflaged
no red light penetrates to the deep, so they appear black and therefore camouflaged
red is a warning signal that an animal is dangerous
Which statement is supported by the events shown in the diagram?
Materials are cycled between living organisms only
Materials are cycled between living and nonliving aspects of the environment
Materials are cycled between the autotrophs only
Materials are cycled within the atmosphere only
90% of the world's carbon is stored in the oceans
true
false
In the carbon cycle, producers take in the gas __
carbon dioxide
oxygen
nitrogen
carbon monoxide
Which of the following removes carbon from the atmosphere?
Combustion
Respiration
Photosynthesis
Death
Organisms that do not decompose can be buried and become what?
water
nutrients
air
fossil fuels
What is the typical pH of a base?
higher pH, >7
25 km
lower pH, < 7
110 ppm
If something has a pH of 7, what would we consider it as?
An acid
Neutral
A base
What is causing the pH to drop in the oceans?
Squid ink
Rising CO2 levels in the atmosphere
Kelp dying
Acid is being dumped into the ocean
Which of the following is NOT a source of nitrates and phosphates into a river?
Fertilizers
Animal waste
Wastewater
Burning fossil fuels
What can be a source of nitrates for eutrophication in rivers?
fertilisers
plastic bottles
paper
sewage
Eutrophication is defined as a change that occurs to an aquatic ecosystem. This change is mainly due to what?
Newly introduced fish
Depletion of the ozone layer
Increased nutrient concentration
Increase in atmospheric carbon dioxide.
The ultimate goal of photosynthesis is for plants to produce ________ and release __________ as a byproduct
glucose ; oxygen
oxygen ; glucose
oxygen ; carbon dioxide
carbon dioxide ; glucose
