PRODUCERS
What is a producer?
A producer is an organism that makes its own food.
What is a consumer?
A consumer is an organism that gets energy by eating other organisms.
In grass → rabbit → fox, what does the rabbit eat?
Grass.
Put these in the correct food-chain order: fox, grass, rabbit.
Grass → rabbit → fox
What is the original source of energy for most food chains?
The Sun
Where do most producers get their energy?
The Sun.
An animal eats only plants. What type of consumer is it?
An herbivore.
In grass → rabbit → fox, which organism gets its energy directly from the producer?
Rabbit.
Build this chain: leaves, caterpillar, bird, hawk. Then identify the primary consumer.
Leaves → caterpillar → bird → hawk; caterpillar is the primary consumer.
What do the arrows in a food chain show?
The direction energy moves.
Which of these is NOT a producer: grass, algae, rabbit, or flower?
Rabbit.
In grass → rabbit → fox, what type of consumer is the rabbit?
Primary consumer.
A caterpillar eats leaves, and a bird eats the caterpillar. Put the three organisms in the correct food-chain order.
Leaves → caterpillar → bird.
A student writes: grass ← rabbit ← fox. What needs to be fixed?
The arrows are backwards. They should be grass → rabbit → fox because the arrows show the direction energy moves.
Why are decomposers sometimes called “nature’s recyclers”?
They break down dead organisms and return nutrients to the environment.
What is the process called when plants use sunlight to make their own food?
Photosynthesis.
In grass → grasshopper → frog → snake, identify the primary, secondary, AND tertiary consumers.
Grasshopper = primary, frog = secondary, snake = tertiary.
Grass → rabbit → snake → hawk. Identify the primary, secondary, and tertiary consumers.
Rabbit = primary, snake = secondary, hawk = tertiary.
In grass → mouse → snake → hawk, what type of consumer is the snake?
Secondary consumer.
A disease causes the rabbit population in an ecosystem to decrease. How could this affect the organisms before and after the rabbit in its food chain?
There may be more plants because fewer rabbits are eating them, while predators may have less food.
Explain why a rabbit cannot be a producer even though it gets energy that originally came from the Sun.
A rabbit cannot make its own food! It must eat another organism to get energy.
A rabbit and a fox are both consumers, but they get their energy in different ways. Explain the difference.
The rabbit is a herbivore and gets energy by eating plants. The fox is a carnivore and gets energy by eating other animals.
In grass → grasshopper → frog → snake, the number of grasshoppers suddenly decreases. Which organisms could be affected, and why?
The frogs could have less food, which could also leave the snakes with less food.
Create a food chain for an ecosystem that includes a producer, primary consumer, secondary consumer, and tertiary consumer. Explain how energy moves through your chain.
Answers vary. Example: grass → grasshopper → frog → snake. Energy moves from the producer to the primary, secondary, and tertiary consumers as each organism is eaten.
Explain how the Sun, producers, consumers, and decomposers are all connected in an ecosystem.
The Sun provides energy, producers use it to make food, consumers get energy by eating organisms, and decomposers break down dead organisms and return nutrients to the environment.