1
A cactus uses sunlight and water to grow.
Which TWO are abiotic?
A Sunlight
B Water
C Cactus
D Soil bacteria
Sunlight
Water
Which group contains only biotic factors?
A Soil, water, sunlight
B Hawk, rabbit, grass
C Air, temperature, rain
D Rock, sand, water
Hawk, rabbit, grass
Why are abiotic factors important in ecosystems?
A They eat other organisms
B They provide nonliving resources organisms need
C They hunt prey
D They produce energy
They provide nonliving resources organisms need
What type of organism is grass?
Producer
Sun → Grass → Grasshopper → Frog → Snake → Hawk
If frogs disappeared, what would happen to grasshoppers?
Population would increase
An eagle has sharp talons.
How does this help survival?
Helps catch and hold prey.
A duck has webbed feet.
How does this help survival?
Helps swim faster to escape predators or find food.
A polar bear has thick fur.
How does this help survival?
Keeps the animal warm in cold environments.
A rabbit has camouflage fur.
How does this help survival?
Helps hide from predators.
Sun → Grass → Grasshopper → Frog → Snake → Hawk
If grass died from drought, which organisms would be affected first?
Grasshoppers
A woodpecker has a long, strong beak.
How does this structure help the woodpecker survive?
A. It helps the bird swim faster
B. It helps the bird dig insects out of tree bark
C. It helps the bird fly longer distances
D. It helps the bird hide from predators
B. It helps the bird dig insects out of tree bark
A drought removes most plants in an ecosystem.
Question:
Name two things that will happen to animals in this food web.
• Herbivores decrease
• Predators lose food
• Food chain becomes unstable
• Some animals migrate or die
Grass → Mouse → Snake → Hawk
If the mouse population suddenly increases, what will most likely happen next?
A. Snake population will increase
B. Grass population will increase
C. Hawk population will disappear
D. Snake population will decrease
A. Snake population will increase
A pond ecosystem contains fish, algae, frogs, sunlight, water, and rocks.
Which statement correctly explains the role of abiotic factors in this ecosystem?
A. Abiotic factors provide energy and materials organisms need to survive.
B. Abiotic factors are animals that hunt other organisms.
C. Abiotic factors are only found on land ecosystems.
D. Abiotic factors only affect plants.
A. Abiotic factors provide energy and materials organisms need to survive.
Sun → Grass → Grasshopper → Frog → Snake → Hawk
Which organism is both a predator and prey?
Frog or snake
Animals that live in the grasslands have structures and behaviors that help them survive. Which sentences describe structures that help grassland animals survive? Choose all correct answers.
Prairie dogs have paws designed for digging burrows.
Coyotes have thin, sleek bodies that allow them to sneak quietly through tall grasses.
Bison move in herds to protect their young from predators.
Owls have night vision that helps find field mice and ground squirrels in the dark prairie night.
A hive of honeybees survives cold prairie winters by hibernating.
1,2,4
A tide pool is an ecosystem on the edge of an ocean, sea, or bay. It is made of living and nonliving parts. The rocks, water, and air are_____of a tide pool. The kelp, crab, and starfish are_______that depend on the rocks and water to survive.
Which terms, in order, best complete the sentences?
(Biotic and Abiotic)
Abiotic and Biotic
A population of rabbits lives in an area where winters become much colder than usual.
Which trait would most help the rabbits survive?
A. Thicker fur
B. Smaller ears
C. Brighter fur color
D. Longer legs
A. Thicker fur
Sun → Grass → Grasshopper → Frog → Snake
If a pesticide kills many grasshoppers, which organism will be affected first?
A. Frog
B. Snake
C. Grass
D. Sun
A. Frog
Sun → Grass → Grasshopper → Frog → Snake → Hawk
Where does all energy originally come from?
The Sun
Some behaviors help organisms on the African savanna survive.
Which of the following are behaviors that increase the chance of the animal’s survival? Choose three answers.
A young lion cub practices stalking prey through tall grass.
Hyenas in a pack work together to find food.
An elephant holds the trunk of another elephant.
A herd of zebras smells lions in the area and runs away.
A zebra and wildebeest play in the same field together.
1,2,4