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WorksheetsSystems of Living Organism
Total questions: 40
Worksheet time: 32mins
Which of the following is NOT an organizational structure of an organism?
cell
tissue
organ system
nucleus
What is an organism?
A living system that can respond to stimuli, grow, reproduce, and maintain a consistent state (homeostasis)
Anything that's alive
Anything that grows and reproduces itself
Anything that moves of its own accord
Look at this food web. Name two producers in the food web.
land plants, water fleas
tiny water plants. water fleas
tiny water plants, land plants
insects, water fleas
Which of the following is NOT the herbivore?
heron
slug
insect
water fleas
Which food chain correctly describes the flow of energy in an ecosystem?
Grass-->cow-->human
Caterpillar-->leaf-->human
Cow-->grass-->human
Leaf-->bird-->caterpillar
Rabbits eat grass and other plants to survive, but they do not eat animals. What kind of animal are rabbits?
Decomposers
Carnivores
Producers
Herbivores
How do decomposers help other organisms in an ecosystem?
They break down dead organisms and add nutrients back to the soil that plants use.
They use the sunlight to make their own food that other organisms eat for energy.
They help disperse seeds for plant growth.
Decomposers do not help other organisms in an ecosystem.
In what order do a hawk, grass, and rabbit form a food chain in a meadow?
Hawk-->grass-->rabbit
Grass-->hawk-->rabbit
Rabbit-->grass-->hawk
Grass-->rabbit-->hawk
Which of the following lists only consumers?
Hawks, lizards, chipmunks
Acorns, squirrels, rabbits
Grass, chipmunks, eagles
Mice, squirrels, grass
The picture shows an energy pyramid. What will most likely happen to the foxes and the wolves if the rabbits are removed?
The foxes will eat more wolves
The foxes will eat fewer wolves
There will be more foxes and wolves
There will be fewer foxes and wolves
The picture below shows an ocean bay food chain. Sea otters move into the ocean bay. They eat all the sea urchins. This change will cause....
kelp to have less food
crabs to have more food
sea ducks to have less food
arctic foxes to have more food
A marine food web is shown in the diagram. Which organism below belongs in level 3 of this marine food web.
salmon
sea algae
zooplankton
polar bear
Which statement best describes the ow of energy as it passes through the organisms in the pyramid?
Energy flows through the organisms from bottom to top and increases at each level.
Energy flows through the organisms from bottom to top and decreases at each level.
Energy flows through the organisms from top to bottom and increases at each level
Energy flows through the organisms from top to bottom and decreases at each level.
The picture below shows the energy flow through a meadow community. Which of the following would most likely occur to the populations within the community of organisms immediately after a wildfire burns the environment?
Hawks would increase and foxes would increase.
Hawks would decrease and foxes would increase.
Meadow plants would increase and rabbits would decrease.
Meadow plants would decrease and rabbits would decrease.
A food chain is a series of relationships between members of an ecosystem so that _________ can be transferred between them.
food
sunlight
energy
water
As energy is transferred through a food chain, only 10-20 percent of the energy is available to the next member of the chain. This is because...
80-90 percent is used by each member of the chain for life processes
80-90 percent may be lost to heat or waste products
80-90 percent may be eaten
A and B both
An example of a food chain in a pond environment would be: algae: water bug: fish: otter. In this example the __________ is at the bottom of the food chain.
algae
water bug
fish
otter
An example of a forest food chain could be: pinenut (from a tree): squirrel: fox: bacteria. In this example, the food chain ends with ....
plant-eating
meat-eating
decomposition
photosynthesis
Each level of a food chain is called a _________ level.
food-eating
trophic
sunlight
energy
A food chain always begins with an autotroph. This kind of organism, such as a plant, is one which can produce organic material from inorganic substances. This is done with a series of chemical reactions inside the organism, done with the help of energy from _______.
water
the soil
the sun
the air
After the first producer, the next members of the food chain will be consumers. Consumers must eat __________ ______________ to survive.
sunlight
water
other organisms
none of the above
Producers are called ______________________, while consumers are called heterotrophs.
herbitrophs
carnitroph
autotrophs
decomposers
The length of a food chain is measured by the number of _____________ encountered as energy moves from the autotroph to the top consumers.
species
people
bacteria
plants
A series of interrelated food chains in a given ecosystem is called a ______________.
trophic level
food pyramid
predator-prey relationship
food web
All animals respire. What is respiration?
breathing
chemical reaction
sweating
coughing
During normal human respiration, glucose reacts with ___________ to produce energy.
oxygen
nitrogen
blood
water
What is the first step in photosynthesis?
Producing sugar
Trapping sunlight
Producing water
Producing oxygen
In addition to sunlight, what else is required for photosynthesis to take place?
sugar and water
water and oxygen
carbon dioxide and water
oxygen and carbon dioxide
How many groups of reactions take occur in the process of photosynthesis?
5
4
3
2
What are the products of photosynthesis?
water and oxygen
sugar and water
sugar and oxygen
water and carbon dioxide
What is Respiration?
Respiration is the chemical reaction that takes place in the cells
Respiration is breathing
Respiration is anaerobic
Respiration is the process where energy is produced
The respiratory system is housed in the:
Trachea
Lungs
Thoracic cavity
Abdominal cavity
Which describes the process of aerobic respiration?
takes place in the absence of oxygen
takes place in the presence of oxygen
does not use an electron transport system
results in the incomplete oxidation of glucose
The lungs are:
Spongy and elastic
Contain only a few smooth muscle fibers
Paired
All of the above
The abdomen contains major:
soft organs
diaphragm
lungs
heart
This is a cartilaginous structure extending inferiorly from the larynx to the bronchi below:
Trachea
Esophagus
Epiglottis
Ribs
This structure is a highly specialized valvular mechanism that opens and closes the airway passage:
Trachea
Larynx
Bronchi
Lungs
Air sacs are pitted with small depressions called:
Alveolar ducts
Bronchioles
Epithelium
Alveoli
The place where carbon dioxide is exchanged for oxygen is:
Alveoli
Alveolar ducts
Alveolar sacs
Bronchi
The trachea is lined with:
Hyaline cartilage
Aponeurosis
Ciliated epithelium
Adipose tissue
