Vocabulary and Core Concepts
What is an organism that makes its own food using sunlight called?
Producer
Are trees producers, consumers, or decomposers?
Producers
In this food chain, who is the primary consumer:
Sun--->Grass--->Grasshopper--->Frog--->Snake
Grasshopper
What will likely happen to herbivores if plant populations decrease?
Herbivore populations will also decrease due to less food
If a fish population drops from 200 → 150 → 100 over time, what is the trend?
Decreasing
What types of organism breaks down dead plants and animals?
Decomposers
Is a deer a producer, consumer, or decomposer?
Consumer
In a food chain, what happens to energy as it moves from one organism to the next?
Energy Decreases
Why would predators be affected if herbivores decrease?
Predators would decrease because their food source is reduced
If an insect population rises from 500 → 650 → 800, what is the trend?
Increasing
What is the main source of energy for most ecosystems?
The Sun
Is a wolf a producer, consumer, or decomposer?
Consumer
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Why is energy not recycled in ecosystems?
Energy is lost as heat and cannot be reused
What is biodiversity?
The variety of living organisms in an ecosystem
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What type of relationship might exist if one population decreases while another increases?
Predator-prey relationship
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What term describes the variety of living things in an ecosystem?
Biodiversity
Is fungi a producer, consumer, or decomposer?
What is the correct way for the arrows to go on a food chain?
A. Grass--->Deer--->Wolf
B. Wolf--->Deer--->Grass
A. Grass--->Deer--->Wolf
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Why are ecosystems with higher biodiversity more stable?
They can better withstand changes because there are more species to fill roles
If fish eat insects, why might insect populations increase when fish decrease?
Fewer fish means less predation, so insect population grows.
What do we call a diagram that shows all feeding relationships in an ecosystems?
Food Web
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What role do decomposers play in an ecosystem?
Break down dead organisms and recycle nutrients back into the ecosystem
What is the difference between a food chain and a food web?
Food chain is a single pathway, food web is multiple interconnected pathways
How can a drought impact an ecosystem?
It reduces water and plant life, affecting all organisms in the food web
What is carrying capacity?
The maximum number of organisms an environment can support based on available resources like food, water, and space.