Ecosystems
What is a food chain?
A linear picture of what eats what in an ecosystem. Shows how energy moves in an ecosystem
What would happen if the grain all died?
The animals would have less food, their populations would decrease
T of F: When a grasshopper is eaten by a bird the matter from the grasshopper becomes body matter for the bird
True
What does photosynthesis mean?
Producers making their own food
What is a food web?
Shows multiple food chains and how they interact in an entire ecosystem.
What would happen if the grass and the grain all died?
The entire ecosystem would eventually die
Can matter be created or destroyed?
NAHHHH
What is needed for photosynthesis to take place?
Sunlight, Water, CO2
What do both food chains and food webs always begin with?
Producer/ plant
The bird population increases, what does that mean for the owls? What does that mean for the grasshoppers?
Owls have more food= their population will increase
Grasshopper will decrease in population since birds eat grasshoppers
When food is eaten, what 2 things happen?
Energy, body matter/growth
What is made during photosynthesis?
Food molecules (glucose)
What is the original source of energy for all ecosystems?
The sun
Which animals on this food web have no predators?
Foxes and owls
Which shows a correct way that matter moves in a food chain?
A) Marsh Grass -> Frog -> Great Blue Heron -> American Alligator
B) Bladderwort Plant -> Grass Carp -> Rabbit -> Alligator
C) Algae -> Young Mosquito -> Grass Carp -> Alligator
D) Algae <- Young Mosquito <- Grass Carp <- Alligator
C
What is released into the air after photosynthesis?
Oxygen
What is one way an ecosystem can be thrown out of balance that we learned about?
Invasive species, a species dying out, etc.
An invasive species enters this ecosystem and eats rabbits and birds. How will that affect the foxes?
Foxes will have competition for food therefore they'll have less food.
Why do the arrows point in certain directions in a food chain or web?
The arrows point to where the energy flows
If a plant has sunlight, co2 and water but no soil, what will happen to that plant?
The plant will be healthy and survive because it only needs sunlight, co2 and water.