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Exam 4 pt.1

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LEC. 17-19 Questions
Eboni Barnes
Quiz by Eboni Barnes, updated more than 1 year ago
Eboni Barnes
Created by Eboni Barnes over 7 years ago
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Resource summary

Question 1

Question
Lichens are made up of two different kinds of organisms living in a symbiotic relationship. The two organisms are
Answer
  • an alga or cyanobacterium and a fungus
  • a protozoon and a fungus
  • a fungus and the roots of a plant
  • a plant and an animal
  • a bacterium and a protozoon

Question 2

Question
In the basidiomycete life cycle, the only diploid cell is the
Answer
  • zygote
  • zygospore
  • conidium
  • primary mycelium
  • secondary mycelium

Question 3

Question
The only fungi that have flagellated cells are the
Answer
  • ascomycetes
  • basidiomycetes
  • zygomycetes
  • chytrids
  • glomeromycetes

Question 4

Question
Rhizopus nigricans is a member of the phylum
Answer
  • Zygomycota
  • Chytridiomycota
  • Ascomycota
  • Glomeromycota
  • Basidiomycota

Question 5

Question
Large reproductive structures produced by some fungi are called
Answer
  • mycelia
  • mycorrhizae
  • hyphae
  • fruiting bodies
  • conidia

Question 6

Question
Mycorrhizae are a
Answer
  • symbiotic association between a termite and a fungus
  • symbiotic association between an alga and a fungus
  • symbiotic association between a fungus and a plant root
  • parasitic association between a bacterium and a plant root
  • parasitic association between a bacterium and a lichen

Question 7

Question
When a lichen has a flat appearance and grows tightly attached to a rock the lichen is described as being
Answer
  • foliose
  • crustose
  • globose
  • laminose
  • fruticose

Question 8

Question
Mushrooms belong to the phylum
Answer
  • Ascomyceta
  • Basidiomycota
  • Zygomycota
  • Glomeromycota
  • Chytridiomycota

Question 9

Question
In a mycorrhizal association, the plant provides ____ to the ____.
Answer
  • phosphorous; lichen
  • sugars; fungus
  • amino acids; alga
  • nitrogen; bacterium
  • water; alga

Question 10

Question
Most fungi produce filaments called
Answer
  • hyphae
  • mycorrhizae
  • conidia
  • sporangia
  • none of these

Question 11

Question
Hyphae that contain two genetically distinct nuclei within each cell are referred to as
Answer
  • haploid
  • diploid
  • dikaryotic
  • polyploid
  • none of these

Question 12

Question
In the ascomycetes, meiosis occurs inside a(n)
Answer
  • conidium
  • sporangium
  • ascus
  • arbuscule
  • basidium

Question 13

Question
Conidia are
Answer
  • asexual spores
  • sporangia
  • hyphae
  • arbuscules
  • basidia

Question 14

Question
The sac fungi belong to the phylum
Answer
  • Zygomycota
  • Chytridiomycota
  • Ascomycota
  • Glomeromycota
  • Basidiomycota

Question 15

Question
Mendel's principle of dominance implies that
Answer
  • alleles cannot be expressed unless they are both the same.
  • alleles are the carriers of genetic information.
  • both alleles are expressed equally.
  • only one allele is expressed in the heterozygous condition.
  • none of these

Question 16

Question
A true breeding tall pea plant is crossed with a true breeding dwarf pea plant. All of the F1 offspring are tall. What is the genotype of the dwarf parent plant?
Answer
  • TT
  • Tt
  • tt
  • TTt
  • tT

Question 17

Question
A parent heterozygous for two traits will produce ____ types of gametes with respect to those traits.
Answer
  • 2
  • 3
  • 4
  • 6
  • 8

Question 18

Question
If 76 out of 104 offspring express the dominant trait in a particular cross, the parents were most likely to be
Answer
  • both homozygous dominant.
  • both homozygous recessive.
  • both heterozygous.
  • one homozygous dominant and the other homozygous recessive.
  • one homozygous recessive and the other heterozygous.

Question 19

Question
Recessive traits
Answer
  • are expressed only if the organism is heterozygous.
  • are expressed only if the organism is homozygous recessive.
  • are never expressed.
  • never skip a generation.
  • will always be expressed.

Question 20

Question
In garden peas, tall (T) is dominant to dwarf (t). What phenotype ratio of offspring would you expect from crossing a tall (Tt) plant with a dwarf (tt) plant?
Answer
  • 1:1:1:1
  • 9:3:3:1
  • 3:1
  • 9:7
  • 1:1

Question 21

Question
A tall pea plant (TT) and a different tall pea plant (Tt) have the same
Answer
  • alleles.
  • genetic makeup.
  • genotype.
  • offspring.
  • phenotype.

Question 22

Question
A dihybrid cross
Answer
  • involves diploid individuals.
  • involves individuals differing in one trait.
  • involves individuals differing in two traits.
  • involves individuals with polygenes.
  • requires two test crosses.

Question 23

Question
In garden peas, inflated pods (I) is dominant to pinched pods (i). What are the chances of getting pods that are inflated from crossing a homozygous dominant plant with a heterozygous plant? You must show your Punnett square to get full credit.
Answer
  • 0%
  • 25%
  • 50%
  • 75%
  • 100%

Question 24

Question
Mendel's principle of segregation implies that the two alleles of a gene in a diploid organism
Answer
  • are distributed to separate gametes during meiosis, with each gamete receiving one allele.
  • are inherited without relation to the alleles of another trait.
  • are assorted to the same gamete during meiosis.
  • may contaminate each other.
  • none of these

Question 25

Question
What is the relationship in the genetic information of a homologous pair of chromosomes?
Answer
  • The information is identical.
  • The information is the same in animals, but not in other organisms.
  • The information is the same in plants, but not in other organisms.
  • There is no similarity.
  • They carry information for the same traits, although the information is not necessarily identical.

Question 26

Question
In garden peas, tall (T) is dominant to dwarf (t). What are the chances of getting a dwarf plant from crossing a tall (Tt) plant with a dwarf (tt) plant? You must show your Punnett square to get full credit.
Answer
  • 0%
  • 25%
  • 50%
  • 75%
  • 100%

Question 27

Question
A useful tool for showing all possible combinations of gametes from a particular parental cross is a
Answer
  • monohybrid cross.
  • dihybrid cross.
  • filial generation.
  • Punnett square.
  • test cross.

Question 28

Question
A true breeding tall pea plant is crossed with a true breeding dwarf pea plant. All of the F1 offspring are tall. In words, how would you describe the genotype of the F1 plants?
Answer
  • homozygous dominant
  • homozygous recessive
  • heterozygous
  • tall
  • dwarf

Question 29

Question
The Hardy-Weinberg principle
Answer
  • can be used to see if a population is in genetic equilibrium.
  • can be used to see if evolution is occurring in a population.
  • applies to large populations, not small ones.
  • All of these
  • None of these

Question 30

Question
The rapid evolution of an ancestral population into many new species is called
Answer
  • polyploidy.
  • adaptive radiation.
  • cline formation.
  • sympatric speciation.
  • allopolyploidy.

Question 31

Question
Who proposed that evolution is "descent with modification"?
Answer
  • Lamarck
  • Malthus
  • Aristotle
  • Darwin
  • Mendel

Question 32

Question
Organs that are similar in underlying form in different organisms due to a common evolutionary origin are ____ organs or structures.
Answer
  • convergent
  • homologous
  • homoplastic
  • vestigial
  • none of these

Question 33

Question
Independent evolution of similar structures in unrelated organisms, as a result of adaptation to similar environments is known as ____ evolution.
Answer
  • homologous
  • homoplastic
  • vestigial
  • convergent
  • biotic

Question 34

Question
Darwin thought that the major driving force in evolution was
Answer
  • natural selection.
  • mutation.
  • gradualism.
  • molecular biology.
  • wars and famine.

Question 35

Question
Allopatric speciation occurs when
Answer
  • members of a species evolve into two separate species, while living in the same area.
  • members of two species are separated from one another geographically.
  • members of two species overcome isolating mechanisms and interbreed.
  • two different species evolve to look alike, even though they are not closely related.
  • members of a species are separated geographically and after subsequent evolution are unable to interbreed

Question 36

Question
In populations that are not evolving,
Answer
  • the allele frequencies will change randomly.
  • the allele frequencies remain constant from generation to generation.
  • microevolution is occurring.
  • the Hardy-Weinberg principle is not applied.
  • macroevolution is occurring.

Question 37

Question
Sympatric speciation occurs when
Answer
  • members of a species evolve into two separate species, while living in the same area.
  • members of two species are separated from one another geographically.
  • members of the same species overcome isolating mechanisms and interbreed.
  • two different species evolve to look alike, even though they are not closely related.
  • members of a species are separated geographically, and after subsequent evolution are unable to interbreed.

Question 38

Question
Stabilizing natural selection
Answer
  • favors phenotypes at one extreme.
  • is associated with populations well-adapted to their environment.
  • involves one phenotype gradually replacing another.
  • involves two or more phenotypes being favored.
  • selects against the intermediate phenotype.

Question 39

Question
The spine of the fishhook cactus and the tendrils of the garden pea are both modified
Answer
  • leaves
  • stems.
  • flowers.
  • buds.
  • stipules

Question 40

Question
Microevolution
Answer
  • refers to the major changes that result in the formation of new species.
  • is the same as adaptive radiation.
  • involves relatively small or minor changes that take place within a population.
  • may change some alleles, but the gene pool does not change.
  • represents genetic equilibrium.

Question 41

Question
Gene flow is caused by
Answer
  • the loss of alleles due to chance.
  • migration between populations.
  • mutation.
  • natural selection.
  • random mating.

Question 42

Question
There are floral differences among some related species of plants that result in pollination by different pollinators. In this case, reproductive isolation is due to
Answer
  • timing differences.
  • structural differences.
  • embryo failure.
  • hybrid sterility.
  • none of these

Question 43

Question
Which of the following is an example of a mechanism for reproductive isolation between two species?
Answer
  • They flower at different times.
  • The embryo formed by the union of their gametes aborts.
  • The resulting offspring is not be able to reproduce.
  • They have floral structures that prevent insects from cross-pollinating them.
  • All of these are reproductive isolating mechanisms.
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