BSC 2011: Biology 2 Exam 1 (UF Online/
Gazda) With Complete Solutions
Why aren't the three rRNA genes of corn one another's closest relatives?
a Because corn is a hybrid of yeast, cyanobacteria, and E. coli
Endosymbiosis in the ancestor of corn gave it the ability to photosynthesize and
respire
Endosymbiosis in the ancestors of eukaryotes, and again in photosynthetic
eukaryotes led to the evolution of mitochondria and chloroplasts, which retain
parts of their original genomes. - ANSWER Endosymbiosis in the ancestors of
eukaryotes, and again in photosynthetic eukaryotes led to the evolution of
mitochondria and chloroplasts, which retain parts of their original genomes.
If you sequenced the chloroplast of wheat, where would you expect it to appear
on the phylogenetic tree?
The wheat sequence would appear closest to the ancestor of the
cyanobacterium Chlorobium and sequence of the corn chloroplast.
The wheat sequence would appear closest to the corn chloroplast only.
The wheat sequence would appear between the three corn ribosomal
sequences - ANSWER The wheat sequence would appear closest to the corn
chloroplast only
Which of the following is a synapomorphy of stoneworts and land plants?
Chloroplasts
Chlorophyll b
Multicellular sporophyte
Retention of the egg in the parental organism - ANSWER Branched apical
growth
All land plants produce ------- by mitosis and ----- by meiosis. - ANSWER Gametes,
Spores
Identify the adaptations evolved in the common ancestor of land plants that
allowed the successful colonization of land.
Select the one that doesn't apply.
Evolution of a water-impermeable cuticle
Evolution of a carbohydrate energy-storage molecule
Evolution of gametangia
Evolution of a mechanism for structural support
, A mutualistic association with a fungus that promotes nutrient uptake -
ANSWER Evolution of a carbohydrate energy-storage molecule
Within vascular plants, the large, prominent plant is the ------ in nonvascular
plants it is the --------- - ANSWER sporophyte/gametophyte
Which group has gametophytes that are green, leaflike layers that lie flat on the
ground?
Liverworts
Hornworts
Mosses
Stoneworts - ANSWER liverworts
Genetic recombination can occur in many different stages.
Identify the possible stages below.
Select what doesn't apply
Horsetail sporangia
Moss sporophyte
Fern sori
Club moss strobili
moss gametophyte - ANSWER Moss gametophyte
Why are mosses dependent on water for reproduction?
Because sperm are passively transported to eggs by water.
Because gametogenesis occurs only when the plants are moist.
Because eggs and sperm are released into water and then unite.
Because sperm must swim through water to reach and fertilize eggs. - ANSWER
Because sperm must swim through water to reach and fertilize eggs.
Which group typically has large leaves with branching vascular strands, can
reach heights of up to 20 meters, and has sporangia usually clustered in groups
called sori?
Ginkgoes
Horsetails
Ferns - ANSWER Ferns
Which type of land plant possesses the microphyll leaf?
Horsetails
Club mosses
Mosses
Gazda) With Complete Solutions
Why aren't the three rRNA genes of corn one another's closest relatives?
a Because corn is a hybrid of yeast, cyanobacteria, and E. coli
Endosymbiosis in the ancestor of corn gave it the ability to photosynthesize and
respire
Endosymbiosis in the ancestors of eukaryotes, and again in photosynthetic
eukaryotes led to the evolution of mitochondria and chloroplasts, which retain
parts of their original genomes. - ANSWER Endosymbiosis in the ancestors of
eukaryotes, and again in photosynthetic eukaryotes led to the evolution of
mitochondria and chloroplasts, which retain parts of their original genomes.
If you sequenced the chloroplast of wheat, where would you expect it to appear
on the phylogenetic tree?
The wheat sequence would appear closest to the ancestor of the
cyanobacterium Chlorobium and sequence of the corn chloroplast.
The wheat sequence would appear closest to the corn chloroplast only.
The wheat sequence would appear between the three corn ribosomal
sequences - ANSWER The wheat sequence would appear closest to the corn
chloroplast only
Which of the following is a synapomorphy of stoneworts and land plants?
Chloroplasts
Chlorophyll b
Multicellular sporophyte
Retention of the egg in the parental organism - ANSWER Branched apical
growth
All land plants produce ------- by mitosis and ----- by meiosis. - ANSWER Gametes,
Spores
Identify the adaptations evolved in the common ancestor of land plants that
allowed the successful colonization of land.
Select the one that doesn't apply.
Evolution of a water-impermeable cuticle
Evolution of a carbohydrate energy-storage molecule
Evolution of gametangia
Evolution of a mechanism for structural support
, A mutualistic association with a fungus that promotes nutrient uptake -
ANSWER Evolution of a carbohydrate energy-storage molecule
Within vascular plants, the large, prominent plant is the ------ in nonvascular
plants it is the --------- - ANSWER sporophyte/gametophyte
Which group has gametophytes that are green, leaflike layers that lie flat on the
ground?
Liverworts
Hornworts
Mosses
Stoneworts - ANSWER liverworts
Genetic recombination can occur in many different stages.
Identify the possible stages below.
Select what doesn't apply
Horsetail sporangia
Moss sporophyte
Fern sori
Club moss strobili
moss gametophyte - ANSWER Moss gametophyte
Why are mosses dependent on water for reproduction?
Because sperm are passively transported to eggs by water.
Because gametogenesis occurs only when the plants are moist.
Because eggs and sperm are released into water and then unite.
Because sperm must swim through water to reach and fertilize eggs. - ANSWER
Because sperm must swim through water to reach and fertilize eggs.
Which group typically has large leaves with branching vascular strands, can
reach heights of up to 20 meters, and has sporangia usually clustered in groups
called sori?
Ginkgoes
Horsetails
Ferns - ANSWER Ferns
Which type of land plant possesses the microphyll leaf?
Horsetails
Club mosses
Mosses
