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Dichotomous Keys
Test Description: Texas 7.11ABC
Instructions: Answer all questions to get your test result.
1) Dichotomous keys are NOT based on
A
Observable traits
B
Physical characteristics
C
Structural adaptations
D
stimuli and response
2) Dichotomous keys have ____ choices at each branch?
A
1
B
3
C
2
D
4
3) Scientists use dichotomous keys to
A
conduct experiments
B
predict the outcomes of offspring
C
identify organisms
D
determine if organisms reproduce sexually or asexually
4) What is taxonomy?
A
the branch of science that deals with names and classifies organisms
B
process by which organisms with favorable traits produce successful offspring
C
a way to predict the outcomes of offspring
D
a tool used by scientists to identify organisms based on a series of questions
5) Scientists use which languages when classifying and naming organisms?
A
Latin and Greek
B
Latin and Spanish
C
Italian and Greek
D
English and Spanish
6) The two word naming system that includes Genus and species is called what?
A
selective breeding
B
natural selection
C
binomial nomenclature
D
a dichotomous key
7) The largest, broadest rank in classifying organisms is called
A
phylum
B
species
C
kingdom
D
genus
8) The smallest, most specific level of classifying organisms is the
A
phylum
B
genus
C
species
D
kingdom
9) The process where people choose which organisms to breed in order to get specific desired traits is called
A
Respiration
B
Selective breeding
C
Photosynthesis
D
Natural selection
10) A characteristic of an organism which can be either genetic or acquired is a
A
variation
B
adaptation
C
mutation
D
trait
11) A student compares and labels insects by examining body structures. Which tool will help the student identify each insect?
A
psychrometer
B
dichotomous key
C
spectroscope
D
anemometer
12) What question might be the focus of a dichotomous key investigation?
A
Do all insects have wings?
B
When should observations be taken during an investigation?
C
How are observations collected by scientists?
D
What are similarities and differences between organisms?
13) A group of students examines preserved specimens in order to classify each organism based on a dichotomous key. What equipment would help students complete this investigation?
A
computer
B
hand lens
C
collecting net
D
meter stick
14) When scientists first explored rainforests and began cataloging the vast numbers of organisms, descriptions and drawings were recorded in journals. Which tool would be most helpful in classifying the organisms?
A
dichotomous key
B
microscope
C
binoculars
D
graph
15) Which tool would NOT be helpful in the identification of characteristics of organisms n a dichotomous key investigation?
A
hand lens
B
microscope
C
metric ruler
D
telescope
*select an answer for all questions
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