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WorksheetsMarine Biology & Oceanography: Marine Plants & Ecology
Total questions: 42
Worksheet time: 1hrs 1mins
What do seaweeds such as giant kelp provide beyond being a food source (primary producer)?
they protect coral reefs
they take salt out of the water
they create a habitat for many organisms
How are seaweed classified or sorted in to groups?
By their pigment
By their length
By the water they are found in
By their toxins
Seagrasses form seagrass meadows which provide ________ to many organisms
food
habitat
oxygen
pollution
Mangroves can only be found in ___________ regions
Polar
Temperate
desert
tropical
Oxygen is produced through the exhalations of marine animals.
Oxygen is produced through precipitation falling on the ocean.
The marine ecosystem providing the most habitat and with the MOST diversity is
sandy beach
rocky shore
coral reef
kelp forest
The majority of marine organisms are found in
deep ocean waters
shallow, coastal waters
fisheries
none of the above
Which of the following is a threat to coral reefs?
oil spills
sewage
pesticides
all of the above
When corals turn white due to algae leaving it is know as
whiteout.
coral bleaching.
algal disease.
coral death.
Which of the following is not a significant limiting factor for seaweed?
sunlight
oxygen
place to anchor
nutrients
Which of the following is true about sea grasses?
Their roots help them absorb nutrients
The don't have leaves or stems
They are nonvascular
They are also called seaweed
Lower part of the oceanic zone that receives NO light
benthic zone
photic zone
aphotic zone
neritic zone
True or false? We should try to control and limit the population of all algae.
True-Algae is causing dead zones!
False-A lot of pure algae is a necessary food source for fish and humans.
Is kelp a type of algae?
Yes
No
Is seaweed a type of algae?
Yes
No
Group of photosynthetic organisms most readily recognized by their larger members, such as seaweeds and kelps.
fungi
algae
protozoa
helminths
What are some threats to sea grasses?
drought, hurricanes, erosion
deforestation, invasive species, ocean acidification
tourism, sedimentation, algal blooms
pollution, coastal development, climate change, overfishing
True or False: Sea grasses are important for maintaining biodiversity in marine ecosystems.
True
False
Sea grasses have no impact on biodiversity
Sea grasses decrease biodiversity
Which of the following is a threat to marine plants?
Dredging
Prop Scars
Coastal Development
All of these are correct
Area located between high and low tide boundaries:
Strandline
Intertidal zone
Supratidal zone
Subtidal zone
Area located below intertidal zone, remaining underwater:
Strandline
Intertidal zone
Supratidal zone
Subtidal zone
Mangroves can only be found in ___________ regions
Polar
Temperate
desert
tropical
Which of the following is a primary producer in marine ecosystems?
Fish
Seaweed
Crabs
Sharks
What is the main role of mangroves in coastal ecosystems?
Provide food for fish
Stabilize shorelines
Increase water salinity
Reduce oxygen levels
Which zone of the ocean is known for having the highest biodiversity?
Abyssal zone
Intertidal zone
Coral reef
Open ocean
What role do mangroves play in protecting coastal areas?
They increase water salinity
They provide habitat for fish
They act as a barrier against storms and erosion
They decrease biodiversity
Which of the following is a benefit of seagrass meadows?
They increase ocean acidity
They provide oxygen and habitat for marine life
They reduce water clarity
They are a source of pollution
True or False: Coral reefs are known as the rainforests of the sea due to their high biodiversity.
True
False
What is the primary role of phytoplankton in marine ecosystems?
They are predators of small fish
They decompose organic matter
They are primary producers, providing food through photosynthesis
They are a source of pollution
Which of the following factors can lead to coral bleaching?
Increased water temperature
Decreased salinity
Excessive nutrients
All of the above
What do seaweeds such as giant kelp provide beyond being a food source (primary producer)?
they protect coral reefs
they take salt out of the water
they create a habitat for many organisms
Seagrasses are important because:
they provide habitat for many animals
they can protect coral reefs from sediment
they are nurseries for juvenile fish
all answers are correct
Through what process do plankton get energy and provide energy to the rest of the ocean?
Carbon cycle
Photosynthesis
Chemosynthesis
Bioerosion
Nitrogen cycle
In what Marine Ecological Zone would you expect to find ALGAE?
Pelagic
Deep Ocean
Photic
Benthic
What is the primary function of zooxanthellae in coral reefs?
They provide structural support
They offer protection from predators
They perform photosynthesis, providing energy to corals
They increase water salinity
Which of the following marine zones is characterized by the presence of sunlight?
Abyssal zone
Photic zone
Aphotic zone
Benthic zone
True or False: Mangroves can help in carbon sequestration, reducing atmospheric CO2 levels.
True
False
Autotrophs (producers) can perform photosynthesis because they have -
Mitochondria
Ribosomes
A Nucleus
Chloroplasts
Exit: Carbon dioxide
Exit: Glucose
Exit: Oxygen
Exit: Water vapor
