Increased algae growth in a lake can occur because of

increased nitrogen or phosphate levels

Which of the following statements is false?

The littoral zone of a lake is farthest from the shore.

the populations of all organisms that occupy a defined area

According to Darwin's theory of natural selection, a struggle for survival is a result of

large number of offspring born each generation

Exotic species disturb an ecosystem because they

often have no natural predators or other control mechanisms

Forest fires have a beneficial role in ecosystems becausethey

enrich the soil by returning nutrients

Malthus's work is important to Darwin theory of evolution as it allowed him to conclude that

there is competition among individuals of the same species

Lamarck is important to the study of evolution because he

proposed that the environment could drive changes

Since he found inherited variations in all species, Darwin concluded that

some individuals might be better suited to an environment

The addition of nutrients to a stream will immediatelycause

bacteria to increase and D.O. to decrease

Radiometric dating provided scientists with

method for finding approximate age of the earth and fossils

A niche is best described as

roles and interactions of a species within itscommunity

The theory of evolution by acquired characteristics did not include which of the following

physical characteristics cannot be passed to offspring

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Bio 20 unit B review

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Questions 20

Answers

1
In which taxonomic group do the members have thegreatest number of similarities?
kingdom
family
genus
phylum
2
Which of the following is not an acquired trait?
the ability to read
A tattoo
A suntan
Sense of smell
3
Increased algae growth in a lake can occur because of
decreased pH
decreased water temperatures
Increased carbon levels
increased nitrogen or phosphate levels
4
Which of the following statements is false?
The littoral zone of a lake is farthest from the shore.
Aquatic plants do not usually grow in the profundalzone.
Littoral zone is closer to the surface than profundal zone.
The limnetic zone has more light than the profundalzone.
5
A community includes
all organisms in a population regardless of area
all members of a certain species in a defined area
the populations of all organisms that occupy a defined area
the physical area where an organism lives
6
An ecotone is considered to be more stable because it has...
less biodiversity
more biodiversity
smaller populations
larger populations
7
Which major Canadian biome is found in Alberta?
tropical rainforest
Taiga
Tundra
Desert
8
According to Darwin's theory of natural selection, a struggle for survival is a result of
large number of offspring born each generation
many species competing with one another
occurrence of mutations
variation of traits among individuals of the same species
9
Exotic species disturb an ecosystem because they
always cause extinction of the local populations
occupy a niche that has not been filled before
often have no natural predators or other control mechanisms
better adapted to local conditions than the native species
10
Forest fires have a beneficial role in ecosystems becausethey
drive exotic plants out of ecosystems where they don’tbelong
reduce the number of predators in an area
enrich the soil by returning nutrients
clear the ground so water can be absorbed into thesoil.
11
Malthus's work is important to Darwin theory of evolution as it allowed him to conclude that
all populations are expected to increase in size over time
individuals with the best traits will survive and reproduce
there is competition among individuals of the same species
all species show variation
12
All of the deer in a forest area of 100 km2 can be describedas a
deer species
deer population
deer community
deer biome
13
Lamarck is important to the study of evolution because he
proposed a theory of evolution called adaptations
conducted genetic experiments with peas
proposed a theory of evolution called natural selection
proposed that the environment could drive changes
14
Since he found inherited variations in all species, Darwin concluded that
some individuals might be better suited to an environment
variation did not play a significant role in evolution
environment did not influence the characteristics
variations between individuals was random
15
The addition of nutrients to a stream will immediatelycause
bacteria to increase and D.O. to decrease
Bacteria to decrease and D.O. to decrease
bacteria to decrease and D.O. to increase
Bacteria to increase and D.O to increase
16
Everything an organism does to survive and reproduce in its ecosystem determines its
niche
trophic level
competitive advantage
reproductive success
17
Radiometric dating provided scientists with
method to determine exact age of earth
method for determining age of a fossil by its heat
method for finding approximate age of the earth and fossils
method of dating that is not accurate for young objects
18
A niche is best described as
abiotic factors of an ecosystem
a population of a species of animals that occupies an area
roles and interactions of a species within itscommunity
biological components of an ecosystem
19
Which of the following is not a category of water pollution?
inorganic solid wastes
disease-causing organisms
thermal energy
addition of exotic species
20
The theory of evolution by acquired characteristics did not include which of the following
physical characteristics cannot be passed to offspring
organisms can change during their lifetime
strenuous activity can change organisms
the environment plays a role in selecting characteristics

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