Ecosystem Unit Review / Test is Wednesday
Name: ________________________________
Homeroom: ________________
Parent signature: _______________________________ (for extra credit)
Cells
1. All living things are made up of ____Cells__________________
2. Cells are made up of
_________Nucleus_____________ = control center for the cell
__________Cytoplasm__________ = jelly-like substance that fills the cell
___________Cell Membrane_____ = keeps the cell together
__________Vacuoles___________ = stores water and other materials (plant cell)
3. Draw and label a cell below using the parts listed above
Ecosystems
Use the word bank below to match the vocabulary words to their definitions
ecosystem
habitat
niche
population
community
4. _____Niche_______________ the organism’s job or role in its ecosystem
5. _____population___________ the number of species in one area
6. ______habitat____________ where an organism lives
7. ______community__________ all of the populations on one area
8. _______ecosystem__________ the community of living and non-living parts
Use the word bank below to match the vocabulary words to their definitions
herbivore
consumer
parasite
omnivore
carnivore
decomposer
producer
host
9. ___carnivore__________ an animal that only eats meat
10.___decomposer________ an organism that breaks down other dead organisms
11.___producer___________ an organism that makes its own energy from the sun
12.____herbivore__________ an animal that only eats plants
13.____parasite____________ an organism that feeds but does not kill another
14._____consumer__________ an organism that has to eat to get energy
15._____host______________ an organism that is fed off of by a parasite
16._____omnivore__________ an animal that eats both plants and animals
17. Draw a food chain using the following parts: carnivore, sunlight, decomposer,
producer, and herbivore. BE SURE TO USE ARROWS TO SHOW HOW THE
ENERGY MOVES THROUGH THE FOOD CHAIN.
18.What are four common abiotic (non-living) elements in an ecosystem?
Circle the most important abiotic element in most ecosystems.
1) water
2) air
3)
temperature
4)
sunlight
19.How do plants turn sunlight into energy (what is the name of this process)?
Photosynthesis
20.What are the four major limiting factors for plant and animal populations?
1) air
2) living space
5) water
3) shelter
4) food
21.Make a simple food web that includes the following: BE SURE TO USE ARROWS
TO SHOW HOW THE ENERGY MOVES THROUGH THE FOOD CHAIN.
 Sunlight
 Grass
 Oak tree
 Squirrel
 Mouse
 Small bird
 Grasshopper
 Owl
 Decomposers
22. Explain how the populations of predators and prey are related.
Predators eat the prey. The more predators the less prey. The less predators the
more prey
Match the ecosystems to the descriptions below.
forest
ocean
pond
estuary
wetlands
lake
grassland
23.___grassland_________ terrestrial, dry soil, filled with grasses, few trees
24.___lake______________ aquatic, fresh - still water, larger than a pond
25.____ocean____________ aquatic, salt water, very large
26.____forest___________ terrestrial, good amount of rain, filled with trees
27.____estuary____________ aquatic and terrestrial, where a river meets the ocean
28._____pond_________ aquatic, fresh – still water, smaller than a lake
29._____wetlands_______ aquatic and terrestrial, habitat for many animals and plants
Extra credit: show the chemical equation for photosynthesis below
___sunlight__________________ + _____6CO
2
__________ + __6H O__________ 
2
____C H O ____________ + ______6O ___________
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