Font size
WorksheetsAquatics Science Final Exam
Total questions: 151
Worksheet time: 1hrs 19mins
What does the term 'Biotic' mean?
living organism in the environment
non-living part of the environment
a type of chemical reaction
a weather phenomenon
Which of the following statements is true about unicellular organisms?
They are made of many cells
The cell carries out all functions
They have many types of cells
They can be seen without a microscope
An organism is either made of just ________.
one or more cells
proteins only
water only
DNA only
A ______ is the basic structural and functional unit of all living organisms.
cell
tissue
organ
molecule
What is the first level of organization in living things?
Cells
Organs
Tissues
Organ systems
What is the fifth level of organization in living things?
Organisms
Cells
Tissues
Organs
Arrange the following levels of organization in the correct order: Organism, Cells, Organ System, Organs, Tissues.
Cells, Tissues, Organs, Organ System, Organism
Organism, Organ System, Organs, Tissues, Cells
Organ System, Organs, Tissues, Cells, Organism
Tissues, Cells, Organs, Organ System, Organism
Which stage in the life cycle of a fish is described as a reproductive organ made up by a nutritive yolk that the developing fish can feed on?
Egg
Fry
Adult
Spawning
Compare the life cycles of a fish and a frog. Which stage is unique to the frog’s life cycle but not present in the fish’s life cycle?
Egg
Tadpole
Juvenile
Fry
At which stage do young fish become independent and able to eat on their own?
Egg
Fry
Spawning
Larvae
Which of the following best describes the process of spawning?
Growing new body parts after injury
Laying eggs on land
Releasing eggs or sperm into the water in hopes that they will meet and fertilize
Building nests for eggs
Which reproductive strategy involves depositing fertilized zygotes outside the body?
Viviparous
Oviparous
Asexual reproduction
Parthenogenesisfif
Which of the following is an example of an ovoviviparous animal?
Seahorse
Frog
Chicken
Kangaroo
In parthenogenesis, what is true about the offspring?
They are genetically identical to the parent
They are a mix of genes from two parents
They are always male
They require fertilization to develop
A scientist is examining how a fish's gills help it exchange gases with water. Is this scientist studying anatomy or physiology?
Anatomy
Physiology
Ecology
Genetics
If you are labeling the bones and muscles in a fish, which field are you working in?
Physiology
Anatomy
Chemistry
Physics
What is located at the posterior end of an organism?
The head and nose
The dorsal fin
The tail fin (caudal fin)
The ventral side
If a scientist is studying the digestive organs of a fish, which anatomical position are they most likely examining?
Dorsal
Ventral
Posterior
Lateral
Which part of the fish is responsible for protecting the gills from harm?
Mouth
Dorsal fin
Operculum
Caudal fin
A fish is having trouble maintaining its balance while swimming. Which external anatomical part is most likely damaged?
Scales
Dorsal fin
Mouth
Pectoral fin
Where is the adipose fin located on a fish?
Between the mouth and the gills
Between the dorsal fin and the caudal fin
On the underside near the vent
At the tip of the nose
Which anatomical position refers to the cranial region, where the head and nose are found?
Anterior
Posterior
Dorsal
Ventral
Why is it important to distinguish between external and internal anatomy when studying fish?
It helps in understanding the different functions and locations of body structures.
It is only important for identifying fish species.
It is not important for scientific studies.
It only matters for fish that live in saltwater.
A student observes a fish and notices two small openings above its mouth. Based on your knowledge, what is the most likely function of these openings?
Hearing underwater sounds
Smelling substances in the water
Breathing air
Detecting light
Producers are able to create their own energy using which two types of functions?
Cell Respiration
Transpiration
Chemosynthesis
Photosynthesis
What is the source of chemosynthesis?
Gas Energy
Light Energy
Wind Energy
Chemical Energy
What is the main purpose of chemosynthesis?
To make chemicals
To make food
To make oxygen
To make sunlight
What is chemosynthesis?
Where bacteria use light energy to make glucose.
Where plants use light energy to make glucose
Where bacteria use chemical reactions to make glucose
What is Photosynthesis?
Where bacteria use light energy to make glucose.
Where plants use light energy to make glucose
Where bacteria use chemical reactions to make glucose
In deep ocean trenches, bacteria produce organic materials from inorganic compounds through the process of
Respiration
Decomposition
Photosynthesis
Chemosynthesis
Photosynthesis turns _________energy from the sun into chemical energy.
Light
Chemical
Thermal
Electrical
Which cell would undergo photosynthesis?
Only A
Only B
Both
None of the above
What is an autotroph?
An organism that collects energy from sunlight or inorganic substances to make food.
An organism that eats other organisms for energy.
An organism that only lives in water.
An organism that cannot make its own food.
Which organisms are likely to be classified as decomposers?
Lion and tiger
Tree and flower
Bear and fish
Worm, mushroom, insect, and bacteria
What is a heterotroph?
An organism that makes its own food.
An organism that only eats animals.
An organism that gets its energy by consuming other organisms.
An organism that only eats plants.
What does a carnivore eat?
Only plants
Both plants and animals
Dead matter
Animals
Where do organisms at each trophic level get their energy from?
The trophic level above them
The sun directly
The water in the ecosystem
The trophic level below them
Why are food chains and food webs important for understanding ecosystems?
They show how water moves through the ecosystem
They show how energy flows and is transferred between organisms
They show how plants grow in different environments
They show how weather affects animal behavior
According to the diagram, which trophic level has the greatest biomass?
Human
Grain
Chicken
Decomposer
What does the pyramid of numbers show in an ecosystem?
The relative number of individual organisms at each trophic level
The amount of rainfall in an ecosystem
The speed of energy transfer between levels
The color of organisms in each level
What is biomass in the context of ecological pyramids?
The speed of energy transfer between trophic levels
The amount of sunlight received at each trophic level
The number of organisms at each trophic level
The total mass of living matter at each trophic level
Which organism in the energy pyramid is classified as a tertiary consumer?
Parrot Fish
Shark
Killer Whale
Seaweed
If a student is asked to identify an autotroph in a marine food chain, which organism should they choose?
Zooplankton
Fish
Phytoplankton
Dolphin
Ecology is the study of the __________ between organisms and their environment.
colors
interactions
distances
numbers
Which of the following is a biotic factor?
Water
Soil
Plant
Light
Which of the following is an abiotic factor?
Fish
Coral
Water
Phytoplankton
What is the definition of an organism?
One individual member of a species.
A group of different species living together.
A non-living part of the environment.
A process by which plants make food.
What is a community?
All of the communities in an area and the abiotic factors that affect them.
The populations of different species that interact in some way.
A single species living in an area.
The non-living parts of an environment.
Part of the earth that supports life including atmosphere, water and top portion of Earth's crust is called the _______.
Biosphere
Lithosphere
Hydrosphere
Stratosphere
Which biome consists of saltwater and is home to many aquatic species?
Freshwater
Marine
Desert
Savannah
In commensalism, both species are equally affected.
True
False
What is the organism that is harmed in a parasitic relationship called?
Parasite
Predator
Producer
Host
Sea otters actively hunt and consume _________?
Sea Urchins
Kelp
Penguins
Coral
Barnacles create home sites by attaching themselves to whales. This neither harms nor benefits the whales.
Mutualism
Parasitism
Commensalism
Competition
A clownfish uses a sea anenome as a safe place to live. While living there, the clownfish lures in food for the anenome. This is an example of what type of relationship?
Predator-Prey
Commensalism
Mutualism
Parasitism
A tongue-eating louse is an isopod that eats and takes the place of a fish's tongue. The louse then takes nutrients from the food the fish eats.
What type of symbiotic relationship is being described?
Parasitism
Predation
Commensalism
Mutualism
A coral is competing against another coral for space, sunlight, and food.
What type of symbiotic relationship is being described?
Intraspecific Competition
Parasitism
Interspecific Competition
Predation
Shark competing with Dolphins over the same food, Squid. Which type of symbiotic relationship is being described?
Predation
Intraspecific Competition
Interspecific Competition
Parasitism
In which direction does water generally move within a watershed?
From low elevation to high elevation
From high elevation to low elevation
In a circular motion
Only underground
Which of the following is NOT an example of surface water?
Ocean
Pond
River
Groundwater
Which of the following is an example of surface water?
Groundwater
Pond
Aquifer
Underground Spring
Which type of soil allows more infiltration?
Porous soils and rock
Non-porous soils and rock
Clay soils only
Sandy soils only
Why are streams and rivers considered part of the freshwater aquatic biome?
They contain saltwater
They are found in the ocean
They contain freshwater and support aquatic life
They are always dry
Which of the following best describes a pond?
A body of moving water
A type of standing water
A saltwater ecosystem
A fast-flowing stream
Which of the following best describes a river?
A small, narrow body of running water that drains into a river, lake, or ocean.
A large natural stream of running water that flows downhill into a lake or sea.
A body of still water surrounded by land.
A small pond with no movement.
Why is it important to understand the lateral components (bank and floodplain) of a river system when studying flood conditions?
Because they determine the river's length
Because they affect how water spreads during floods
Because they are the only parts with water
Because they are not affected by floods
Why is it important to study the vertical distribution in lotic systems?
It helps understand the speed of water flow only
It reveals how water, temperature, and aquatic life vary from the surface to the bottom
It shows the direction of river flow
It measures the width of the river
Which zone of a pond or lake is located near the shore and has a depth of less than 15 feet?
Limnetic zone
Profundal zone
Littoral zone
Benthic zone
Which zone is described as the middle layer of a body of water with reduced sunlight?
Photic zone (Euphotic)
Dysphotic zone
Aphotic zone
Benthic zone
Which zone of a lake is described as the top, near-shore layer?
Littoral zone
Open water zone
Deep water zone
Benthic zone
Explain how the benthic zone contributes to the ecosystem of a lake.
It provides a habitat for birds to nest.
It supports decomposers that recycle nutrients by breaking down dead and decaying material, maintaining the lake’s health.
It is the main source of sunlight for the lake.
It increases the oxygen content in the water.
What causes high and low tides on Earth?
The rotation of the Earth only
The gravitational pull of the Moon and the Sun
The wind blowing over the ocean
The Earth's magnetic field
How many high tides and low tides typically occur each day?
1 high tide and 1 low tide
2 high tides and 2 low tides
3 high tides and 3 low tides
4 high tides and 4 low tides
What are ocean waves?
Disturbances on the surface of water affected by wind, gravity, and underwater disturbances.
Movements of air in the atmosphere caused by temperature changes.
Currents in the ocean caused by the rotation of the Earth.
Layers of water with different temperatures.
Which of the following is NOT a factor that affects ocean waves?
Wind
Gravity
Underwater Disturbances
Sunlight
Which of the following animals is NOT commonly found in salt marshes?
Crab
Oyster
Camel
Mosquitofish
Why is grass able to grow in salt marshes?
Grass requires only freshwater.
Grass is tolerant of salty water.
Grass grows only in deserts.
Grass cannot survive in wetlands.
Where are mangrove forests typically found?
In deserts
In tropical and subtropical coastal areas where freshwater and saltwater meet
In mountain regions
In deep ocean trenches
Which of the following is NOT a characteristic of the deep sea ocean biome?
Low temperatures
High pressure
Abundant sunlight
Darkness
Based on the diagram, which feature is found between the continental shelf and the continental rise?
Abyssal plain
Continental slope
Oceanic trench
Volcanic island
Why might organisms living in the intertidal zone need to adapt to changing conditions?
Because the temperature is always the same
Because the area is always dry
Because the area is covered by water at high tide and exposed at low tide
Because there is no sunlight
What does the diagram of the intertidal zone illustrate?
The area of the ocean that is always deep underwater
The area where land and ocean meet, affected by both high and low tides
The area with the highest mountains
The area with the most freshwater
Which of the following best describes the conditions in the midnight zone of the ocean?
Bright and warm
Perpetual darkness and very cold
Shallow and sunny
Full of coral reefs
What is the depth range of the abyssal zone (abyssopelagic) in the ocean?
0 to 200 meters (0 to 656 feet)
200 to 1,000 meters (656 to 3,281 feet)
3,000 to 6,500 meters (9,842 to 21,325 feet)
6,500 to 10,000 meters (21,325 to 32,808 feet)
Why might organisms living in the trench zone need special adaptations?
Because of the abundance of sunlight
Due to the presence of coral reefs
Because of extreme pressures, cold temperatures, and darkness
Due to high oxygen levels
Which ocean is also known as the Southern Ocean?
Pacific Ocean
Antarctic Ocean
Atlantic Ocean
Indian Ocean
What are physical or structural adaptations in animals?
Behaviors animals learn
Parts of their body or physical features that change
The places animals live
The food animals eat
Why do most aquatic animals have a streamlined body shape?
To increase their size
To reduce water resistance and move faster
To help them float
To make them more colorful
What is the main function of blubber in animals like seals?
To help them swim faster
To keep them warm
To help them see better
To make them heavier
What is the main function of gills in fish?
To help fish swim faster
To get dissolved oxygen out of water
To protect the fish from predators
To store food
Which animal is given as an example of having an oily liver for buoyancy?
Dolphin
Whale
Shark
Tuna
Why might a fish migrate in the ocean?
To find food or to reproduce
To escape from sunlight
To learn new swimming techniques
To avoid other fish
How does echolocation help animals like dolphins and bats?
It helps them navigate and located prey
It helps them fly faster.
It helps them change color.
It helps them swim deeper.
Explain how burying helps aquatic animals survive in their environment. Use evidence from the images and text to support your answer.
Burying helps aquatic animals find food more easily.
Burying allows aquatic animals to blend in with their surroundings, making it harder for predators to spot them.
Burying helps aquatic animals swim faster.
Burying is used to attract mates.
Why do marine fish produce concentrated salty urine?
To conserve water and excrete excess salts
To absorb more water from their environment
To increase their body temperature
To help them float in seawater
A student claims that both freshwater and marine fish produce the same type of urine. Using your knowledge of osmoregulation, explain why this statement is incorrect.
Both types of fish produce dilute urine
Freshwater fish produce concentrated urine, while marine fish produce dilute urine
Freshwater fish produce dilute urine, while marine fish produce concentrated salty urine
Both types of fish do not produce urine
Biodiversity, aka biological diversity, usually refers to
the same species in a general location
the number of different species in a given area
the number of animal species in a given area
the number of plant species in a given area
Which habitat exhibits the greatest biodiversity?
A habitat with 15 different species with about 300 individuals each
A habitat with 10 different species with about 75 individuals each
A habitat with 4 different species with about 150 individuals each
A habitat with only one species with about 2000 individual
Adaptations allow for an organism to survive only in its specific habitat.
True
False
As depth increases, the temperature increases.
True
False
The process that decreases the pH of the ocean due to an increase in the absorption of carbon dioxide.
Atmosphere
Geosphere
Acidification
Hydrosphere
Which of the following can is a "source" of the carbon cycle?
Decomposition
The burning of fossil fuels
Volcanic eruptions
All of these
Increased amounts of greenhouse gases can–
cause the oceans to become less acidic.
increase temperatures causing ice to melt on Earth.
decrease temperatures allowing more ice to form.
cause permafrost to extend beyond the polar regions.
Where does most evaporation happen?
Ocean
Lakes
Rivers
Groundwater
Which number identifies the Pacific Ocean?
1
2
3
4
5
Which number identifies the Arctic Ocean?
1
2
3
4
5
Warm ocean currents generally come from
The North Pole
The South Pole
The Equator
The North and South Pole
Cold ocean currents generally come from
The North Pole
The South Pole
The Equator
The North and South Pole
What is the difference between the aphotic zone and the profundal zone?
Aphotic zone has a higher chance of photosynthesis than the profundal zone
Profundal zone is too dark to have biodiversity in comparison to the aphotic zone
The profundal is shallow and the aphotic is not
The aphotic has low biodiversity, and the profundal has high biodiversity
Which answer choice is an example of commensalism?
The anemones provide clownfish with a shelter and the clownfish defends anemones from predators
Birds trail army ants to eat fleeing insects
A tick feeding on the blood of a cat
Barnacles invading the crab’s reproductive system
Why is the ocean salty ?
Due to minerals and salts being carried into bodies of water and deposit into the ocean
Rocks in the ocean gradually start to collect salt and maintain the salinity
Because of groundwater
The ocean contains carbon dioxide
If the temperature of a pond/standing water is 39 degrees Fahrenheit or 4 degrees Celsius then what type of zone is it ?
Hypolimnion
Epilimnion
Metalimnion
Limnetic or Thermlimnion
What organism can reproduce asexually and sexually?
Crabs
Fish
Jellyfish
Frogs
If the fish is a bottom feeder, then that fish has what type of mouth ?
Subterminal
Superior
Terminal
Interior
What is measured when determining the elevation ?
Depth
Surface Area
Width
Height
What are the two types of dorsal fins ? (select 2)
Spiney
Smooth-rayed
Soft-rayed
Finlets
Is it true that bacteria has multiple cells and functions?
True
False
This zone has a low amount of oxygen and decomposers.
Which aquatic zone extends from the surface to the deepest part of a lake?
Profundal
Aphotic
Benthic
Neritic
Which is not one of the ways that water can move through a watershed?
Runoff
Precipitation
Infiltration
Evaporation
Which is the second stage in the life cycle of a frog?
Fry
Larvae
Egg
Spawning
If an organism externally fertilizes its eggs and produces a large quantity of offspring at a faster rate, it would go through which reproductive process?
Viviparous
Oviparous
Ovoviviparous
Binary fission
According to the pyramid of energy, What happens to 90% of the energy ?
Transferred to the next level
Saved for energy
Lost to the environment as heat
Depends on the ecosystem
Where does the thermocline occur?
Hypolimnion
Epilimnion
Metalimnion
Thermocline
Freshwater fish can absorb water from the ocean. What type of adaptation is this considered?
Absorption
Mimicry
Osmoregulation
Homeostasis
What is the largest ocean ?
Pacific Ocean
Antarctic Ocean
Atlantic Ocean
Arctic Ocean
Identify the three qualities of the Deep Sea Ocean ?
Warm temperatures, below 250 meters, and includes the intertidal zone
Cold temperatures, below 200 meters, and includes the intertidal zone
Cold temperatures, below 200 meters, and includes the bathypelagic zone
Cold temperatures, below 250 meters, and includes the intertidal zone
Why are autotrophs the foundation of the ecosystem?
Autotrophs produce energy and use the sun as a food source
Autotrophs acquire their energy from organic substances
Autotrophs are more abundant than other organisms
Autotrophs hold 100% of the energy in the ecosystem, which is transferred through all trophic levels
What percentage of fish are bony fish?
50%
90%
75%
50%
What type of heterotroph is known for consuming other species?
Parasite
Omnivore
Predator
Carnivore
Why is pollution beneficial at times?
Pollution helps the atmosphere maintain a stable temperature
Pollution helps mitigate the effects of global warming
Pollution eliminates debris in the atmosphere
Pollution contributes to the amount of oxygen released into the atmosphere
Which of the following best describes the role of phytoplankton in an aquatic food web?
Secondary consumers that feed on zooplankton
Decomposers that recycle nutrients
Top predators that control fish populations
Primary producers that form the base of the food chain
In a freshwater lake food chain, which organism is most likely to be eaten by a small fish?
Zooplankton
Algae
Large predatory fish
Water lily
What would happen to the aquatic food web if all the top predators were removed?
All organisms would immediately die
Populations of prey species would likely increase
There would be no effect on the food web
The number of primary producers would increase
To rise in the water, a bony fish fills its swim bladder with gas from
its gills.
its bloodstream.
the surrounding water.
its lungs.
Most fishes have a _______________ that helps them move up and down in the water or remain at a given depth.
swim bladder
oxygen tank
The rise and fall of Earth's waters on its coastlines are called
currents
tides
waves
gravity
Primary production occurs here
Photic Zone
Neritic Zone
Hadal Zone
Intertidal Zoné
Oceanic Zone
Heterotrophs get their energy by eating other organisms
true
false
What is the bottom layer of the an energy pyramid?
carivore
consumer
producer
Some human activities that reduce aquatic biodiversity include _____.
Draining a wetland
Damming a river
Pumping water out of an aquifer
All of the answers given are correct
Why is ocean water denser that fresh water?
Ocean water contains more salt than fresh water
Ocean water is deeper that most bodies of fresh water
Ocean water has waves that move the water around
Ocean water contains more organisms than fresh water
Which letter represents the intertidal zone?
A
B
C
D
Which letter represents the neritic ocean zone of the picture provided?
G
H
J
K
Where does the energy for chemosynthesis come from?
sunlight
chemicals
producers
consumers
Deep sea animals use bioluminescence to:
attract mates
attract prey
see
all of these
Where do deep ocean organisms get their nutrients?
A- marine snow
B- kelp
C- chemosynthesis
A & C only
All of these
