Which method of fly control would be most harmful to other organisms in the environment?

Spraying broad-range insecticidies

Reduced root growth may give species A an advantage over B

Use the same size paper circles for all mouthwashes

is a possible answer to a question,tested through experiment

The experimental data below would be more valid if which variable was included?

A control without fertilizer was included for each plant

Lily studies the effect temperature on algae. Which is best to get data & explain results?

Test tubes, thermometers, and graphs of results

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Scientific Method

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Scientific Method Review Questions

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Questions 13

Answers

1
Which method of fly control would be most harmful to other organisms in the environment?
Releasing sterilized male flies
Planting carnivorous plants
Using fly traps
Spraying broad-range insecticidies
2
Read question below
Reduced root growth may give species A an advantage over B
Leaf shape may give species B an advantage over species A
Reduced stem growth may give species A an advantage over B
Flower size & color may give species B an advantage over A
3
The hypothesis best supported by the graph is "the beetles are most active when the area is"
Coolest with some sunlight
Richest in oxygen supplies
Free from predators
Wettest from dew
4
See image below
Use the same size paper circles for all mouthwashes
Use different kinds of bacteria
Use the same type of mouthwas on each paper circle
Use smaller Petri Dish
5
A hypothesis
is a proven fact
can be completely proven
does not have to be tested to be accepted as correct
is a possible answer to a question,tested through experiment
6
Which of the following is a reasonable hypothesis for why a plant appears to be dying?
all of the above
the plant is being watered too much
the plant is not being watered enough
the plant is receiving too much sunlight
7
Which is not a unit of measurement in the metric system?
gram
litter
inch
meter
8
See graph below
Ozone
SO2
Particulates
NO2
9
The amount of light and temperatures are examples of
hypothesis
variables
conclusions
observations
10
The experimental data below would be more valid if which variable was included?
A control without fertilizer was included for each plant
Only one plant was tested
A fifth fertilizer was tested
The plants were grown at variable temperatures
11
Analyze the image below. Which data point in the graph is probably invalid?
4
3
2
1
12
Lily studies the effect temperature on algae. Which is best to get data & explain results?
Research on internet and videotapes of water sampes
pH strips and written observations of stream water
Test tubes, thermometers, and graphs of results
Microscope and written descriptions of weather patterns
13
Which type of organism should you NOT come into contact in your biology laboratory?
organisms that can be seen only with a microscope
plants
animals
organisms that cause disease

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