Biology 1407: Exam 2 Questions With Complete Solutions
all land plants have thought to evolved from Protista brown
algae? Correct Answers false
alteration of generation Correct Answers a reproductive cycle
in which a haploid (n) phase (the gametophyte), gives rise to
gametes, which after fusion to (2n) phase (the sporophyte).
spores produced by meiotic division from the sporophyte give
rise to new gametophytes completing the cycle
angiosperm life cycle Correct Answers
angoisperms Correct Answers - flowering plants
- ovules enclosed within diploid tissues at the time of pollination
anther Correct Answers pollen bearing, part of stamen
antheridia Correct Answers male gametangia, makes sperm
archegonia Correct Answers female gametangia, makes eggs
both genosperms and angiosperms produce seeds? Correct
Answers true
brown algae Correct Answers - became photosynthetic through
endosymbiosis with a eukaryotic red algae that already had a
photosynthetic cyanobacterium
,bryophytes in enviornments Correct Answers - lack true
vascular tissue they have cells that perform those functions
- gametophyte more photosynthetic and conspicuous than
sporophytes
- sporophytes attach to gametophytes and depend on them
nutritionally: can be completely enclosed, or not and turn brown
or straw color.
- require water to reproduce sexually
- most common in most places
bryophyytes Correct Answers - closest living descendants of
first land plants
- called nontracheophytes- lack the derived transport cell called
tracheid
- plants have little ability to regulate internal water levels and
likely tolerate desiccation
- dominate gametophyte generation
- liverworts, mosses, hornworts
carpels (pistol) Correct Answers leaflike organ in angiosperms
that encloses one or more ovules
, charophytes Correct Answers sister clade to all land plants and
are referred to as streptophytes, do not have multicellular
haploid and diploid stages
chlorophytes Correct Answers never made it to land
conifers Correct Answers - (coniderophyta) largest
gymnosperm phylum, include pines, spruces, firs, and others
- found in colder and drier areas
- only pines in conifers have clustered leaves, which have cuticle
and recessed stomata
- leave and other parts of sporophyte have canals into
surrounding cells secrete resin, which deters insect and fungal
attacks
corolla Correct Answers where all petals meet
cuticle Correct Answers waxy surface material secreted on the
surface of plants exposed surfaces to prevent loss of water to the
air, limits gas exchange
cycads Correct Answers - slow-growing gymnosperms of
tropical and subtropical regions
- produce cones and have life cycle similar to pines
- female cones develop upright and are huge
all land plants have thought to evolved from Protista brown
algae? Correct Answers false
alteration of generation Correct Answers a reproductive cycle
in which a haploid (n) phase (the gametophyte), gives rise to
gametes, which after fusion to (2n) phase (the sporophyte).
spores produced by meiotic division from the sporophyte give
rise to new gametophytes completing the cycle
angiosperm life cycle Correct Answers
angoisperms Correct Answers - flowering plants
- ovules enclosed within diploid tissues at the time of pollination
anther Correct Answers pollen bearing, part of stamen
antheridia Correct Answers male gametangia, makes sperm
archegonia Correct Answers female gametangia, makes eggs
both genosperms and angiosperms produce seeds? Correct
Answers true
brown algae Correct Answers - became photosynthetic through
endosymbiosis with a eukaryotic red algae that already had a
photosynthetic cyanobacterium
,bryophytes in enviornments Correct Answers - lack true
vascular tissue they have cells that perform those functions
- gametophyte more photosynthetic and conspicuous than
sporophytes
- sporophytes attach to gametophytes and depend on them
nutritionally: can be completely enclosed, or not and turn brown
or straw color.
- require water to reproduce sexually
- most common in most places
bryophyytes Correct Answers - closest living descendants of
first land plants
- called nontracheophytes- lack the derived transport cell called
tracheid
- plants have little ability to regulate internal water levels and
likely tolerate desiccation
- dominate gametophyte generation
- liverworts, mosses, hornworts
carpels (pistol) Correct Answers leaflike organ in angiosperms
that encloses one or more ovules
, charophytes Correct Answers sister clade to all land plants and
are referred to as streptophytes, do not have multicellular
haploid and diploid stages
chlorophytes Correct Answers never made it to land
conifers Correct Answers - (coniderophyta) largest
gymnosperm phylum, include pines, spruces, firs, and others
- found in colder and drier areas
- only pines in conifers have clustered leaves, which have cuticle
and recessed stomata
- leave and other parts of sporophyte have canals into
surrounding cells secrete resin, which deters insect and fungal
attacks
corolla Correct Answers where all petals meet
cuticle Correct Answers waxy surface material secreted on the
surface of plants exposed surfaces to prevent loss of water to the
air, limits gas exchange
cycads Correct Answers - slow-growing gymnosperms of
tropical and subtropical regions
- produce cones and have life cycle similar to pines
- female cones develop upright and are huge
