Fill in the blank:
The source of all energy is the ______.
sun
100
An organism that creates its own energy from the sun
producer
100
Wheat => Grasshopper => Mouse => Owl
What is the producer in this food chain?
wheat
100
How do plants take in the water they need?
Roots
100
What does a food chain show us?
How energy moves through an ecosystem.
200
Wheat => Grasshopper => Mouse => Owl
What SHOULD be written to the left of "wheat?"
sun
200
An organism that eats other organisms for food and energy
a consumer
200
Wheat => Grasshopper => Mouse => Owl
What is the first consumer in this food chain?
grasshopper
200
What organism gets energy from dead organisms?
decomposer
200
Arrange the steps of digestion to be in order:
1.acids in the stomach digest the food
2. food goes in the mouth and the teeth begin to break it down
3. nutrients from digested food move from the intestines into the bloodstream
4.waste moves from the large intestine out of the body
5.food is swallowed and travels down to the stomach
2, 5, 1, 3, 4
300
Which correctly shows the flow of energy in an ecosystem?
a) producer => decomposer => consumer
b) consumer => producer => decomposer
c) producer => consumer => decomposer
d) consumer => decomposer => producer
c) producer => consumer => decomposer
300
Name two things both producers and consumers need to survive in an ecoystem
air, water, sunlight, decomposers
300
In a food web, Mrs. Baker sees this one link:
Grasshoppers => Frogs
Which organism eats the other?
Frogs eat grasshoppers
300
Living organisms are classified based on:
a) their speed of movement
b) the size of their communities
c) how they obtain their food
c) how they obtain their food
300
Why is it important for predator/prey relationships to be balanced?
Too many predators, they'll run out of food.
Too much prey, the prey will run out of food.
400
The process plants use to make their own food
photosynthesis
400
The process consumers use in their bodies to break down food for energy
digestion
400
Ferns => Rabbit => Hawk => Fungus
Write down this food chain, and label each organism as a producer, consumer, or decomposer.
Wheat => Grasshopper => Mouse => Owl => Bacteria
Which organism is responsible for recycling nutrients?
bacteria
400
How do decomposers help ecosystems?
They break down waste and remains of dead organisms and release nutrients back into the soil.
500
Name two nonliving natural things that do not need the sun to exist.
answers will vary
500
Another word for a producer is a
plant
500
What is a food web?
many paths of energy between living things
500
How do decomposers affect plants in a community?
a) by making consumers stronger
b) by creating nutrients from dead organisms
c) by turning dead organisms into living ones
b) by creating nutrients from dead organisms
500
Name two natural ways an ecosystem can change.
Forest fire, season changes, tsunami, earthquake, volcanic eruption, etc.