Students identify the correct grass-to-hawk food chain order, explain why ecosystems support more rabbits than wolves, and choose the best example of a decomposer. Part B has five fill-in-the-blank problems about food web resilience, what scavengers eat, and what happens to nutrients without decomposers.
Ecosystem resilience and decomposer necessity questions connect food web structure to the long-term health and balance of ecosystems.
Style:
Food Webs and Energy
Part A: Multiple Choice
Circle the best answer for each question.
1. A field has grass, mice, snakes, and hawks. Which food chain is in the correct order?
A) hawk → snake → mouse → grass
B) grass → mouse → snake → hawk
C) mouse → grass → hawk → snake
D) snake → hawk → grass → mouse
2. Why can an ecosystem support more rabbits than wolves?
A) Wolves are bigger animals
B) Less energy is available at higher trophic levels
C) Rabbits reproduce faster than wolves
D) Wolves live in smaller habitats
3. Which is the best example of a decomposer?
A) eagle
B) mushroom
C) deer
D) sunflower
4. What would most likely happen if a new predator that eats rabbits is introduced to a grassland ecosystem?
A) Grass populations would decrease
B) Rabbit populations would decrease
C) Snake populations would increase
D) Decomposer populations would double
Part B: Fill in the Blank
Write the correct answer on each line.
1. An ecosystem with many different food chains woven together is more resistant to change.
2. Scavengers like vultures eat animals that are already dead.
3. Without decomposers, dead organisms would pile up and nutrients would not return to the soil.
4. Energy flows in one direction through a food chain, from producers to consumers.
5. An invasive species can disrupt a food web by competing with native organisms for resources.
Food Webs and Energy
★ Part A: Multiple Choice
Circle the best answer for each question.
1. A field has grass, mice, snakes, and hawks. Which food chain is in the correct order?
A) hawk → snake → mouse → grass
B) grass → mouse → snake → hawk
C) mouse → grass → hawk → snake
D) snake → hawk → grass → mouse
2. Why can an ecosystem support more rabbits than wolves?
A) Wolves are bigger animals
B) Less energy is available at higher trophic levels
C) Rabbits reproduce faster than wolves
D) Wolves live in smaller habitats
3. Which is the best example of a decomposer?
A) eagle
B) mushroom
C) deer
D) sunflower
4. What would most likely happen if a new predator that eats rabbits is introduced to a grassland ecosystem?
A) Grass populations would decrease
B) Rabbit populations would decrease
C) Snake populations would increase
D) Decomposer populations would double
★ Part B: Fill in the Blank
Write the correct answer on each line.
1) An ecosystem with many different food chains woven together is more resistant to change.
2) Scavengers like vultures eat animals that are already dead.
3) Without decomposers, dead organisms would pile up and nutrients would not return to the soil.
4) Energy flows in one direction through a food chain, from producers to consumers.
5) An invasive species can disrupt a food web by competing with native organisms for resources.
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9 Questions
12-18 minutes
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