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WorksheetsClassification Dichotomous Key
Total questions: 41
Worksheet time: 37mins
Name
Class
Date
1.
Scientist A studied a population of birds to learn about their migration patterns. He recorded data for 10 out of the 5,000 birds. Which of the following statements is correct?
a)
His sample size is too small, 10 birds doesn't represent the population accurately.
b)
His sample size is too large, 10 birds is difficult to keep tract of .
c)
His sample size is just right
d)
He should gather data on all 5,000 birds.
2.
The gills of a fish are an example of....
a)
an external structure
b)
an internal structure
c)
an external function
d)
an internal function
3.
The scientific name for an organism is made from the:
a)
class and family name
b)
genus and species name
c)
domain and kingdom name
d)
kingdom and phylum name
4.
Tool used by a taxonomist to identify an unknown organism is a:
a)
dichotomous key
b)
binomial nmenclature
c)
scientific name
d)
binomial key
5.
An illustration and a dichotomous key are given. What is the correct classification for this organism?
a)
Class Insecta
b)
Order Amblygygi
c)
Order Araneae
d)
Order Scorpiones
6.
A table of arachnid and insect characteristics is shown. Which characteristic could be used to distinguish between
arachnids and insects?
arachnids and insects?
a)
Jointed legs
b)
Body segments
c)
Presence of eyes
d)
Presence of antennae
7.
A botanist discovers a new plant in the jungle. Which of the
following observations of the plant’s characteristics would be useful in determining its identity with a dichotomous key?
following observations of the plant’s characteristics would be useful in determining its identity with a dichotomous key?
a)
It was discovered in the summertime
b)
It is wet from a recent rain storm.
c)
Its leaves curl up on the edges.
d)
It is eaten by native jungle ants.
8.
When using a dichotomous key to identify organisms, what do we look at?
a)
physical features
b)
weather patterns
c)
environment
d)
diet
9.
A dichotomous key for trees is provided. Hikers found a tree that has large brown cones and single sharp needles. What species of tree have the hikers found?
a)
Juniper
b)
Pine
c)
Spruce
d)
Fir
10.
What step do we always start with when using dichotomous keys?
a)
1
b)
2
c)
3
d)
4
11.
What is the name of bird W?
a)
Certhidea
b)
Geospiza
c)
Camarhynchus
d)
Platyspiza
12.
What is the name of bird Z?
a)
Certhidea
b)
Geospiza
c)
Camarhynchus
d)
Platyspiza
13.
What is a dichotomous key used for in science?
a)
To organize biomes
b)
Classify organisms
c)
Identify bacteria only
d)
None of these
14.
A student discovers an arachnid with a segmented abdomen, long legs, and a tail with no stinger. The student uses the dichotomous key below to identify it. Which arachnid has the student found?
a)
Whip Scorpion
b)
Wind Scorpion
c)
Daddy long legs
d)
Scorpion
15.
Using this dichotomous key, identify the name of the circled Fish, J.
a)
peacock flounder
b)
band-tail puffer
c)
trumpet fish
d)
spotted goat fish
16.
Using this dichotomous key, identity the name of the circled fish.
a)
band-tail puffer
b)
spotted goat fish
c)
peacock flounder
d)
trumpet fish
17.
A dichotomous key for insects is given. To what order does an insect with two pairs of scaly wings belong?
a)
Coleoptera
b)
Heteroptera
c)
Diptera
d)
Lepidoptera
18.
Which of the following organisms are MOST closely related?
a)
organisms that share a domain
b)
organisms that share a family
c)
organisms that share a genus
d)
organisms that share a species
19.
The first part of a scientific name is an organism's _______________ and the second part is its ________________.
a)
species, genus
b)
phylum, order
c)
class, spices
d)
genus, species
20.
What does it mean to hibernate?
a)
To change your physical characteristics
b)
To sleep for an extended period of time during the winter
c)
To travel to a warmer location
d)
To blend in with the environment
21.
The term used to describe the scientific study of how living things are classified.
a)
Classification
b)
Organization
c)
Domain
d)
Taxonomy
22.
Who was the first person to create a classification system?
a)
Aristotle
b)
Linnaeus
c)
Fox
d)
Woese
23.
In the 8 Levels of Classification which levels is the broadest category?
a)
Kingdom
b)
Family
c)
Species
d)
Domain
24.
As each group in the levels of classification split into smaller groups, the organisms become more ___________.
a)
different
b)
populated
c)
dissimilar
d)
alike
25.
In the Kingdom Plantae organisms that make their own food are called_____________.
a)
Eukaryotes
b)
Heterotrophs
c)
Prokaryotes
d)
Autotrophs
26.
Organisms in the Kingdom Animalia that consume other organisms are called_____________.
a)
Eukaryotes
b)
Heterotrophs
c)
Prokaryotes
d)
Autotrophs
27.
What is the study of classification called?
a)
Taxonomy
b)
Geology
c)
Anatomy
d)
Geometry
28.
True or False: Carolus Linnaeus was the first person to introduce the idea of classification.
a)
True
b)
False
29.
Who first proposed binomial nomenclature as a way of classifying organisms?
a)
Carolus Linnaeus
b)
Carl's Jr.
c)
Charles Darwin
d)
Henry Groseclose
30.
What is a dichotomous key used for in science?
a)
To organize biomes
b)
Identify organisms
c)
Identify bacteria only
d)
None of these
31.
______ is important to survive in the environment.
a)
Variability
b)
Survival
c)
Niches
d)
Intelligence
32.
Is variation good for a species?
a)
Yes
b)
No
c)
I don't care
d)
Possibly
33.
Does variation have to be visible in an ecosystem?
a)
Yes
b)
No
34.
What do healthy ecosystems have better than unhealthy ecosystems?
a)
Diversity
b)
Resistance
c)
Appearance
d)
@soundcloud: 69 Street SW
35.
Variation is a result of subtle differences in _____
a)
Cuteness
b)
Body type
c)
DNA
d)
Resources
36.
Blending in with the environment is -
a)
natural selection
b)
imitation
c)
mimicry
d)
camouflage
37.
A series of questions used to identify an organisms, is called?
a)
a cladogram
b)
a field guide
c)
a dichotomous key
d)
a phylogentic tree
38.
Finches that live on the Galapagos islands have a wide genetic variation in beak shape and size. What caused this variation?
a)
It was a defense against predators
b)
They originated from different types of species
c)
It is an adaptation to the food sources available
d)
The beak stretched to reach its food and was passed down
39.
Make a conclusion.
a)
Dark is more suited for nonpolluted
b)
Light is better suited for polluted
c)
Variation of color has no influence on survival
d)
A given trait may be favorable in one environment, but not another
40.
Which trait is most adapted for a cold climate?
a)
thick, furry coat
b)
long, flexible trunk
c)
sharp, curved tusks
d)
broad, powerful body
41.
In this image, the population of barnacles exhibits ___________.
a)
Variation
b)
Adaptation ( a change or the process of change by which an organism or species becomes better suited to its environment )
c)
Adaptation ( a beneficial trait)
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