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WorksheetsScience Exam
Total questions: 15
Worksheet time: 45mins
1. The reaction of an organism to change in that organism to change in that organism’s environment is called
an adaptation.
a response.
selection.
a stimulus.
1. The organism at the bottom of a food chain is always a
only plants.
Consumers.
Decomposer.
Producer.
1. A carnivore is an animal that eats
Only plants.
Only meat.
both meat and plants.
1. What is a stimulus?
Response
Action
reaction
An inherited behavior (a)
An action that aids survival (a)
A quick automatic response to a stimulus (a)
Internal stimuli come from within an organism, and thus cause no response.
True
False
Plants respond to light by growing toward it.
True
False
Animals are the only kinds of organisms that respond to stimuli.
True
False
Because of the relatively large size of their eyes, flies are able to form clear images of their environment.
True
False
Each food web contains only one predator and one food chain.
True
False
Decomposer break down waste materials so plants can reuse them.
True
False
An ecosystem includes both living and nonliving things.
True
False
The organism at the top of the energy pyramids have the most energy available to them.
True
False
