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EST 2 Biology

Cell Structure and Molecular Biology

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Ecology

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Genetics and Heredity

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Body Systems and Plants

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Classification and Evolution

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Quiz

EST II Biology – Evolution, Taxonomy and Classification – Extra MCQ practice

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Evolution, Taxonomy and Classification EST Biology MCQ practice questions: free practice for EST 2 Biology. Work through these Evolution, Taxonomy and Classification EST Biology MCQ practice questions and get instant feedback on every answer. If you get stuck, review the 5.4 EST II Biology — Classification and Evolution: Image Practice lesson. More practice: EST 2 Biology — all units. Syllabus: OpenStax free science textbooks.

  • Questions count: 20
  • Passing grade: B+
  • Time limit: 20 minutes
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1.
Which of the following is an evolutionary process not based on random factors?
Which of the following is an evolutionary process not based on random factors?
Genetic drift
Natural selection
Mutation
Gene flow
Bottlenecks
2.
Which of the following is not a sexually selected trait?
Which of the following is not a sexually selected trait?
Fruit fly wings
A male baboon's canine teeth
Peacock tail feathers
Male/female dimorphism in body size in many species
A frog's throat sac
3.
An adaptation
An adaptation
can be shaped by genetic drift.
cannot be altered.
evolves because it specifically improves mating success.
affects the fitness of an organism if it is altered.
can be deleterious to an organism.
4.
Which of the following is not a requirement for natural selection to occur?
Which of the following is not a requirement for natural selection to occur?
Variation between individuals
Heritability of the trait being selected
Sexual reproduction
Differences in reproductive success among individuals
Survival of the fittest
5.
Why can Hardy-Weinberg equilibrium occur only in large populations?
Why can Hardy-Weinberg equilibrium occur only in large populations?
Large populations are likely to have more variable environments.
More individuals means less chance for natural selection to occur.
Genetic drift is a much stronger force in small versus large populations.
Large populations make random mating virtually impossible.
Large populations tend to last longer than small ones.
6.
A population of frogs is 9 percent speckled (recessive) and 91 percent without speckles. What are the frequencies of the p and q alleles at Hardy-Weinberg equilibrium?
A population of frogs is 9 percent speckled (recessive) and 91 percent without speckles. What are the frequencies of the p and q alleles at Hardy-Weinberg equilibrium?
p = 0.49, q = 0.51
p = 0.60, q = 0.40
p = 0.70, q = 0.30
p = 0.49, q = 0.30
p = 0.49, q = 0.09
7.
Frequency-dependent selection is
Frequency-dependent selection is
particularly important during speciation.
one way in which multiple alleles are preserved in a population.
possible only when there are two alleles.
most common in bacteria.
the same as heterozygote advantage.
8.
All of the following provide evidence for evolution except
All of the following provide evidence for evolution except
vestigial characters.
Darwin's finches.
homologous characters.
embryology.
mutations.
9.
Why do we assume that oxygen was not present in the original atmosphere?
Why do we assume that oxygen was not present in the original atmosphere?
The presence of O2 would have caused too many species to evolve too fast.
Oxygen would have slowed down the rate of evolution.
The ozone layer, formed by oxygen, has not been around that long.
Inorganic molecules could not have formed in the presence of oxygen.
All the oxygen was held in the volcanoes.
10.
All these are examples of random evolutionary processes except:
All these are examples of random evolutionary processes except:
An earthquake divides a single elk species into two populations that no longer interbreed.
A mutation in a flowering plant results in a new variety.
A long winter causes migrating birds to shift their home range.
A mutation lets a tree population spread seeds more widely, so their population grows.
A spider species declines as individuals move from an old range into a new one.
11.
Which of the following is thought to be the common ancestor to plants?
Which of the following is thought to be the common ancestor to plants?
Chemoautotrophs
Choanoflagellates
Chordata
Chlorophytes
Cnidaria
12.
Which of the following pairs of organisms is most closely interrelated?
Which of the following pairs of organisms is most closely interrelated?
Sponge and halophile
Jellyfish and coral
Oyster and conifer
Lichen and roundworm
Bryophyte and mold
13.
Which of the following was an evolutionary adaptation vital to the survival of the bryophytes?
Which of the following was an evolutionary adaptation vital to the survival of the bryophytes?
The switch from gametophyte to sporophyte as the dominant generation
The development of branched sporophytes
The birth of pollination
The packaging of gametes into gametangia
Evolution of the seed
14.
Which of the following is the most specific category of classification?
Which of the following is the most specific category of classification?
Class
Family
Order
Division
Phylum
15.
Which of the following is not associated with flowers?
Which of the following is not associated with flowers?
Carpel
Stigma
Style
Hypha
Anther
16.
Which of the following was the latest to branch off the animal phylogenetic tree?
Which of the following was the latest to branch off the animal phylogenetic tree?
Radiata
Acoelomates
Eumetazoa
Pseudocoelomates
Deuterostomes
17.
Thermoacidophiles are grouped into this kingdom of single-celled organisms lacking nuclei and membrane-bound organelles.
Thermoacidophiles are grouped into this kingdom of single-celled organisms lacking nuclei and membrane-bound organelles.
Kingdom Animalia
Kingdom Fungi
Kingdom Plantae
Kingdom Protista
Kingdom Monera
18.
Arthropods are grouped into this kingdom whose members are multicellular heterotrophs with the diploid stage dominant in the life cycle.
Arthropods are grouped into this kingdom whose members are multicellular heterotrophs with the diploid stage dominant in the life cycle.
Kingdom Animalia
Kingdom Fungi
Kingdom Plantae
Kingdom Protista
Kingdom Monera
19.
This kingdom is divided into plant-like, animal-like, and fungus-like divisions.
This kingdom is divided into plant-like, animal-like, and fungus-like divisions.
Kingdom Animalia
Kingdom Fungi
Kingdom Plantae
Kingdom Protista
Kingdom Monera
20.
Molds, or deuteromycota, are grouped into this kingdom of mostly multicellular organisms constructed out of hypha.
Molds, or deuteromycota, are grouped into this kingdom of mostly multicellular organisms constructed out of hypha.
Kingdom Animalia
Kingdom Fungi
Kingdom Plantae
Kingdom Protista
Kingdom Monera
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Part of Classification and Evolution — see every lesson and quiz in this unit.
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