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100
What is the process that plants use to produce food?
photosynthesis
100
In a forest food chain, what is the connection between the sun and a tree?
the tree uses the sun's energy to make food through photsynthesis.
100
Where does a deer fit in its food chain?
as both consumer and prey.
100
Which of these is a decomposer?
mold
100
What does first level consumers mean?
an organism that eats plants and provides the energy needed for other types of consumers to use.
200
This producer (bush) uses a molecule called chlorophyll. Which need does chlorophyll help to meet?
making food
200
Alex notices a small spot of fungus growing on an orange in the back of his refrigerator. He doesn’t eat the orange. He looks at the orange again a week later. Which of these is he most likely to observe?
the fungus has grown larger.
200
Jackson and Kathryn were assigned to observe the growth of fungus on a hamburger bun. They sprayed one half of the bun with water and sealed it in a plastic bag. They left the other half of the bun dry and sealed it in a different plastic bag. Over time, what did they observe?
Mold grew faster on the moistened bun.
200
Bacteria are living things that are single cells. Rashan was investigating two samples of bacteria. One sample came from a pond. The other came from composted leaves that were falling apart. Later, he noticed that the pond sample formed bubbles when it was left in a sunny window.
a)What were the bubbles that appeared in the pond sample? What process was taking place? ___________________________________________________________________
a) The bubbles were oxygen. Photosynthesis was taking place.
200
The flow of
producer ---> consumers--> x -->minerals in the soil
and x---> producers
What is X?
decomposers or
first-level consumers or
predators or
second-level consumers or
Decomposers
300
Which type of organism makes its own food?
producer
300
Which of these happens during the time a fallen log is decomposing?
the materials in the log combine into new, complex parts.
300
During the decomposition process, the wastes of living organisms and the remains of dead organisms are broken down and their nutrients are returned to the soil. What is the most important cause of decomposition?
bacteria and fungi
300
Bacteria are living things that are single cells. Rashan was investigating two samples of bacteria. One sample came from a pond. The other came from composted leaves that were falling apart. Later, he noticed that the pond sample formed bubbles when it was left in a sunny window.
b. What was happening to the leaves in the compost pile?
b) Decomposition was happening to the leaves in the compost pile.
300
What is a food web?
a network of overlapping food chains in an ecosystem.
400
What does a food web show?
what food organisms eat
400
Hawks eat snakes. Snakes eat toads. Toads eat grasshoppers. Grasshoppers eat plants. Which of the statements below about this food chain is correct?
a hawk is a second-level consumer.
400
Which of the following does a plant use in the process of photosynthesis?
water, carbon dioxide, and sunlight
400
Explain why humans are classified as omnivores and how that is different from being a carnivore or an herbivore
A human can eat both plants and animals and so is classified as an omnivore. A carnivore consumes other animals for food, and a herbivore eats only plants.
400
What is chlorophyll?
A green food-producing molecule that helps plants make their own food.
500
Which kind of diagram shows how much energy passes along as one organism consumes another?
energy pyramid
500
If the number of fish dropped suddenly, which of the following is a likely shortterm effect in the food web?
fewer squid
500
Which of the following is an example of a producer?
a tree
500
An organism that makes its own food.
Producer.
500
Explain why humans are classified as omnivores and how that is different from being a carnivore or an herbivore
Humans are classified as omnivores because they eat plants such as fruits and vegetables & meat.