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1.
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The diagram below
shows male stag beetles with different mandible phenotypes.
---These male beetles often
fight each other over food sources and to mate with female beetles. ---Males with larger mandible
phenotypes have a significant advantage over those with smaller mandibles.
If food resources in these beetle’s habitat become scarce, which two
mandible phenotypes will have the best chance of surviving?
a. | Tiny and Small | c. | Small
and Medium | b. | Absent and Medium
| d. | Large and Medium |
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2.
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In a population of spiders there are three different phenotypic traits regarding
sizes: small, medium, and large. ---The large spiders are easily seen by predators. ---Small
spiders have a difficult time capturing food. Small Variant | Medium
Variant | Large
Variant | | | | | | | What will most likely happen to this population of spiders
after many generations?
a. | Medium spiders will be the most plentiful | b. | Large spiders will
learn to hide from predators | c. | Small and medium spiders will be the least
plentiful | d. | Small and large spiders will mutate |
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3.
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A population of grass originally had equal amounts
of three different genotypes. Over five generations, the percent of each genotype in the population
changed.
Genotypes | Phenotypes | Original Percent of
Population | Percent of Population after 5
Generations | GG | Dark Green | 33.3% | 75.0% | gg | Light Green | 33.3% | 20.0% | Gg | Dark Green | 33.3% | 5.0% | | | | |
Which statement describes the
most likely reason for this change?
a. | Genotype GG with the dark green phenotype produced seeds
that were unable to grow into plants. | b. | Genotype Gg with
the dark green phenotype was the best adapted to this environment and produced the most
seeds. | c. | Genotype gg with the light green phenotype produced the
greatest number of seeds and was the best adapted. | d. | Genotype GG with the dark green phenotype was best adapted to this environment,
and it therefore flourished. |
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4.
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A rabbit species in the Rocky Mountains exhibits
different fur color phenotypes depending on the season. The table below shows data collected on this
rabbit species during the summer.
| Rabbit Fur
Color | Percentage of Population | | Gray | 37% | Brown | 52% | Black | 10% | White | 1% | | | | |
Two
Part Question
Part One: Which fur color phenotype will probably increase the most
during the winter?
Part Two: Why will this phenotype be more common during the
winter?
a. | Part One: Gray fur phenotype will increase
the most Part Two: Gray fur will enable them to
blend in with the rocks so they can prey on mice. | b. | Part One: White fur phenotype will increase the
most Part Two: Being white will better help them
blend in with the snow to escape predators. | c. | Part One:
Brown fur phenotype will increase the most Part
Two: Brown fur will allow them hide in the dark brown soil found in this
region. | d. | Part One: Black fur phenotype will increase
the most Part Two: Black will be the dominate
phenotype because they only come out at night. |
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5.
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Phenotype variation occurs as a result of the
exchange of genetic information from sexual reproduction and/or from genetic mutations.
Which of the
following is true about inherited variation?
a. | Variation can influence the amount of rainfall in an ecosystem. | b. | Variation can
influence the resources that are available to an organism. | c. | Variation can
influence the amount of available food in an ecosystem | d. | Variation can influence whether organisms are
more likely to survive to reproduce. |
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6.
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Examine the picture(s) below of various tortoises that live in different
locations in the Galapagos Islands. Based on the pictures shown
above of these three tortoises, which of the following is the best explanation of why they have
different neck lengths?
a. | The Isabela Island tortoise has a short neck because there is limited food resources
on their island, so they do not need to reach very far. | b. | The Pinta Island
tortoise has a medium neck because they are a hybrid of the Hood and Isabela Island tortoises. Their
neck length is not related to their environment. | c. | Over many generations the tortoises with the
most effective neck length phenotypes survived to reproduce as they adapted to the unique environment
on each island. | d. | The Hood Island tortoise has a long neck because there is plenty of food resources on
their island, so their long neck allows them to reach up to eat plant
leaves. |
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7.
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The habitat of a moth species included trees with both light and dark colored
bark. Therefore, the moth species included both light and dark colored variants. Then the light-colored trees were
wiped out by a disease, and within a few years nearly all the moths in this forest were dark
colored Which of the following choices BEST explains what happened?
a. | The few light moths that survived did not mate, and therefore they had no
offspring. | b. | The light moths changed their wing pigments to darker colors to avoid being
eaten. | c. | The light moths that survived all had dark offspring in order to adapt to the
change. | d. | The dark moths were less visible to predators, so mostly light moths were
eaten. |
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8.
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A single bird species only ate seeds from two different types of trees in a
forest. About half of the birds had smaller beak phenotype for eating small seeds, and the other half
had a larger beak phenotype for eating big seeds. A drought occurred over
several years, and it killed off nearly all of the trees with the small seeds. At the end of this dry
period, most of the birds had larger beaks. How is this best explained?
a. | The small-beaked birds grew larger beaks so they could eat big seeds.
| b. | The birds with larger beaks killed and ate the birds with smaller
beaks. | c. | Larger beaked birds were better at eating the large seeds from the trees that
survived. | d. | A new predator arrived in this ecosystem, and it only ate small beaked
birds. |
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9.
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Individual spiders in a population of tarantulas have a variety of phenotypes.
Some of the spiders have the ability to flick hairs into the eyes of predators allowing the spiders
to escape from being eaten. Yet a small percentage of the spider population does not have these
hairs.
Why are the tarantulas that have these hairs more
likely to produce offspring than the hairless tarantulas?
a. | The egg sacs of tarantulas that have the hairs are larger and produce more
offspring. | b. | Hairless tarantulas attract more mates. Therefore they produce more
offspring. | c. | Hairy tarantulas are less likely to be eaten, so they are more likely to survive to
mate. | d. | Tarantulas that have the hairs will blend in with their
environment. |
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10.
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One population of rabbits in a meadow near a forest in Canada contained four
variants: ---1) Phenotype: rabbits with a larger tail ---2) Phenotype: rabbits with a
light-colored fur (white or gray) ---3) Phenotype: rabbits with a dark-colored fur (black or
brown) ---4) Phenotype: rabbits with a larger
ears
From 2005 to 2016 the winters is this area
lasted much longer than usual, and there was increased snowfall. Which variant of rabbits most
likely benefited during this period of climate change?
a. | Rabbits with lighter colored fur benefited and increased in
numbers. | b. | Rabbits with darker colored fur benefited and increased in
numbers. | c. | The rabbits with larger ears were the best adapted to this change in
climate. | d. | The rabbits with larger tails had a significant advantage over the other rabbits.
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