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6th Grade Ecosystems TCAP
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6th Grade Ecosystems TCAP
🌿 Part 1: Ecosystem Basics (Questions 1-5)
1. Which of the following is the primary source of energy for most ecosystems?
A) Wind
B) The sun
C) Water
D) Soil
2. What is the role of decomposers in an ecosystem?
A) They produce their own food through photosynthesis
B) They hunt and eat other animals
C) They break down dead organisms and return nutrients to the soil
D) They only eat plants
3. Which organism would be classified as a primary consumer?
A) Grass
B) Rabbit
C) Hawk
D) Mushroom
4. In a food chain: Grass → Grasshopper → Frog → Snake → Hawk, which organism is the tertiary consumer?
A) Grasshopper
B) Frog
C) Snake
D) Hawk
5. What happens to the amount of available energy as you move up each level in an energy pyramid?
A) It increases
B) It decreases
C) It stays the same
D) It doubles
🔄 Part 2: Ecosystem Interactions (Questions 6-10)
6. If a disease killed most of the wolves in a forest ecosystem, what would most likely happen to the deer population?
A) The deer population would decrease
B) The deer population would increase
C) The deer population would stay the same
D) All the deer would migrate to a different area
7. Which of the following best describes a food web compared to a food chain?
A) A food web shows only one pathway of energy transfer
B) A food web shows multiple interconnected pathways of energy transfer
C) A food web only includes producers
D) A food web is simpler than a food chain
8. A farmer notices that removing all the hawks from his property led to an increase in crop damage. What is the most likely explanation?
A) Hawks were eating the crops directly
B) Without hawks to control them, rodent populations increased and ate more crops
C) Hawks were pollinating the crops
D) The weather changed when the hawks left
9. In a healthy ecosystem, which statement about population sizes is most accurate?
A) All populations grow continuously
B) Populations remain relatively stable over time
C) Predator populations are always larger than prey populations
D) Producer populations are always smaller than consumer populations
10. A student observes that a pond ecosystem has algae, small fish, large fish, and water birds. If pollution killed all the algae, what would be the most likely long-term effect on this ecosystem?
A) Only the small fish would be affected
B) The entire ecosystem would collapse because the primary producers were removed
C) The large fish and water birds would increase in number
D) Nothing would change because algae are not important
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