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WorksheetsUnit Test #5 Review
Total questions: 25
Worksheet time: 13mins
A model showing the alleles for cat fur is shown. Which cross would produce albino offspring?
Some flower colors are determined by codominance. Possible phenotypes and genotypes of angelfish colors are shown.
Which table shows the expected phenotypes of offspring resulting from a cross between a white flower and a red/white flower?
Red-0%
White-50%
Red/White-50%
Red-50%
White-50%
Red/White-0%
Red-25%
White-25%
Red/White-50%
Red-25%
White-50%
Red/White-25%
A genetic cross involving two unlinked genes is represented.
BbFF x bbFf
Which genotype is NOT possible in the offspring produced by the cross?
BbFF
Bbff
bbFf
bbFF
Which numbered location on the phylogenetic tree identifies characteristics shared by the lion, leopard, and jaguar?
1
2
3
4
Based on the cladogram, which set is the least related?
Bryozoa and arthropoda
Chordata and Cnidaria
Priapulida and Mollusca
Annelida and Brachiopoda
Based on the cladogram, the ancestral species most likely had —
amniotic egg
bony skeleton
hair
vertebrae
Two scientists studied patterns of evolution in the fossil record. Many species they analyzed showed periods of slow changes interrupted by a period of rapid change.
This pattern of periods of slow change interrupted by periods of rapid change with few, if any transitional fossils, best describes the theory of —
natural selection
genetic drift
punctuated equilibrium
gene flow
When multiple transitional fossils are found in many rock layers, they provide evidence of —
seasonal variation in the diet of a species
gradual change of a species over time
DNA functioning as the genetic material of organisms
an unchanging environment
Farmers spray pesticides on their plants to protect the plants from being eaten by insects. Some individual insects have a genetic mutation that makes them resistant to the toxins in the pesticides.
Which statement best describes how only a few resistant individuals resulted in the pesticide becoming ineffective?
The resistant insects change the toxin on the plants, making it safe for others.
The resistant insects grow larger and eat less of the plants.
The resistant insect eat the contaminated surface and leave the rest for others.
The resistant insects are bale to survive and reproduce and create a population that is also resistant.
The diagram shows green and brown caterpillars on a tree. Which result is most likely to occur to the caterpillar population due to predation over time?
The number of brown caterpillars will increase.
There will be more green caterpillars than brown caterpillars.
The number of brown caterpillars will decrease.
The green caterpillars will move to a different type of tree.
Male birds found in areas without predators are more colorful than the ones found in locations with large predator populations. A population of adult birds originating from an area with a large number of predators is transferred to a nearby area with few predators.
Which of these is most likely to happen over a few generations?
The mortality rate of the birds will increase.
Offspring will stop competing for resources.
There will be an increase in mutations in the offspring.
There will be an increase in the number of colorful birds.
Blue flying fish live in the upper layers of the ocean. Blue flying fish have enlarged pectoral fins that enable them to glide for 400 meters above the ocean surface and appear to fly.
Which statement best describes how natural selection led to enlarged pectoral fins in blue flying fish?
Fish were able to glide out of the ocean and into other bodies of water to mate with other species.
Fish were able to live both on land and in the water as a result of their larger pectoral fins.
Fish with enlarged pectoral fins were able to glide out of the ocean to escape predators, increasing their fitness.
Fish changed their DNA to express enlarged pectoral fins, changing the allele frequency of the population.
The leatherback sea turtle lays about 110 fertilized eggs 2-8 times per season. After hatching, most turtles become prey to larger marine organisms, and around 1 in 1000 reproduce.
One benefit of the leatherback sea turtle laying many eggs is to —
increase the average body size for surviving individuals to avoid predation
decrease competition between different octopus species to maintain resources in the population.
increase the chance that more individuals will survive to maintain the population
decrease the likelihood of offspring being consumed by predators
Cross-pollination of flowers from different populations of the same species will most likely result in —
gene flow as new alleles are introduced
evolution of a different species as alleles mix
hybrid sterility as gametes from different individuals are incompatible
a decrease of genetic variation among individuals
Lack of genetic diversity among some species is due to genetic drift.
Which statement explains the most likely consequence of having a low genetic diversity on the cheetah population?
The chances of a mutation occurring in the population are decreased, increasing the survival rate.
The gene pool remains in equilibrium and future generations of offspring are stronger and better adapted to their environments.
The population becomes less likely to survive an outbreak of a disease or an environmental change, increasing the chance of species extinction.
Genetic variability is maintained from older populations that have survived and endured environmental stressors.
Caribou may leave their herd to mate with other herds of caribou. Which of these is a likely outcome of movement by the caribou?
Gene flow occurs between populations.
Allele frequencies suddenly change.
Relative genotypic frequencies reach a constant state.
Intermediate phenotypes increase in the species.
Why is it important to assign each organism a scientific name?
Each scientific name applies to only one species, making it universally identifiable to scientists.
Each scientific name allows scientists to better study the behavior of an organism.
The scientific name allows scientists to develop common names for organisms.
The scientific name describes how an individual looks relative to others of the same genus.
Two scientists want to compare their research of hyenas. Which information must the two scientists provide to each other to determine if they studied the same type of hyena?
Size of the hyena populations
Type of habitat in which the hyenas live
Number of offspring produced by the hyenas
Species name of hyenas studied
Organisms are classified today using the Linnaean system, and the following table shows the taxonomic classification of two organisms.
Taxonomic classification is important to biologists because it provides a way to —
prove that evolution occurs
discover and name every organism on Earth
designate Latin as the universal language of biology
identify organisms and find evolutionary relationships between them
Based on this table, which explanation best describes why elk and fallow deer are classified in the same genus?
They mate and produce fertile offspring.
They live in similar habitats.
They are both in kingdom Animalia and have similar diets.
They are both in family Canidae and share a more recent common ancestor.
Which phylum cannot fly and can change locations on its own?
Chondrichtyes
Phanerogams
Aves
Cryptogams
Based on the information provided, which two species are most closely related?
Aardwolf and Gray Wolf
Coyote and Gray Wolf
Lion and Blue Whale
Lion and Aardwolf
Which characteristic do all organisms in Kingdoms Animalia, Protista, and Fungi have in common?
They are eukaryotic.
They are prokaryotic.
They are unicellular.
They are multicellular.
A researcher determines an organism to be eukaryotic, unicellular, and autotrophic. In which taxonomic group should this organism be classified?
Bacteria
Protista
Animalia
Archaea
A team of students encounters an unknown organism in a field while conducting a biodiversity study. Some students think the organism is a plant, while others think it is a fungus.
Which question should the students investigate to classify the organism correctly?
Is there a cell wall around the cells of the organism?
Does the organism perform photosynthesis?
Is there nervous tissue present in the organism?
Does the organism reproduce sexually?
