Ecosystems
This place is the transition zone where freshwater meets the sea.
What is an estuary?
Organisms that can make their own food using sunlight are called these.
What are producers?
Energy flows from the Sun to these organisms first
What are producers?
Which of these is a transition zone where freshwater enters the sea: coral reef, estuary, tidal prism, or land bridge?
What is an estuary?
What do a bear, mouse, grasshopper, and a human all have in common: carnivores, consumers, herbivores, or producers?
What are consumers?
This broad ecosystem type includes lakes, ponds, oceans, estuaries, and salt marshes.
What is aquatic?
Which abiotic resource, if removed, would prevent plants from living?
What is sunlight?
In a food web, arrows point from the ___ to the ___
What is eaten → eater?
Which type of ecosystem has salt water while the other has freshwater: ocean vs. pond — which is which?
Ocean = salt water; Pond = freshwater.
If producers make food, who eats producers next?
What are consumers (or herbivores if asking who specifically eats producers)?
Name the main difference between an ocean ecosystem and a pond ecosystem.
What is salt water vs. freshwater
Producers use this process to convert the sun’s energy into organic matter.
What is photosynthesis?
Based on the diagram provided (plant → grasshopper → snake → hawk path), how are the grasshopper and hawk connected?
The grasshopper is eaten by animals in the chain and the hawk is the top predator (or: grasshopper is eaten by the snake which is eaten by the hawk).
Which type of ecosystem includes estuaries: aquatic, brackish, terrestrial, or intertidal zone?
What is aquatic?
Which organism type breaks down dead plants and animals and returns nutrients to the soil?
What are decomposers?
Rain forests are this type of ecosystem (on land), while estuaries are this type (water).
What is terrestrial and aquatic?
True or False: Producers are eaten by decomposers.
What is True?
Which choice correctly shows a flow of energy through a food web: A) mountain lion → deer → tree B) rabbit → mountain lion → deer C) grass → mouse → snake D) owl → frog → cricket
C (grass → mouse → snake)
Which statement is true: rain forests are aquatic, rain forests are terrestrial, rain forests are abiotic, or rain forests are biotic?
What is: rain forests are terrestrial?
The food web shows many organisms. If grass → mouse → snake is given, what role does the mouse play?
What is a consumer?
If the frog population is decreasing because a new predator appears, this is the most likely cause.
What is: a predator was introduced (increased predation)?
Give one reason producers are important in food webs
They provide food/energy for consumers.
Draw or describe a three-step food chain that ends with a hawk as the top predator
Example answer: grass → rabbit → hawk (or grass → mouse → hawk)
Explain why estuaries are important habitats
Estuaries are nurseries for many species, mix fresh and salt water, and support high biodiversity.
The frog population fell. Which answer from the test best fits why: insect population rose, temperature same, vegetation increased, or a predator introduced?
What is: a predator has been introduced?