Bio 230 unit 1 Questions and Answers with Verified Solutions | Latest
2026 Update
Q: pennate vs centric diatoms. are the gametes isogamous(the same) or oogamous
(different)?
Answer:
pennate: cut in half symmetrical. isogamous centric: circle symmetrical, oogamous
Q: what group is responsible for diatomites?
Answer:
diatoms
Q: what algal groups are stramenopiles?
Answer:
diatoms and brown algae (of the ones we have discussed)
Q: what is the cue for diatoms to reproduce secxually?
Answer:
they get too small
,Bio 230 unit 1 Questions and Answers with Verified Solutions | Latest
2026 Update
Q: cell surface of diatoms is made of what?
Answer:
silica
Q: phaeophyceae means what?
Answer:
mainly multicellular or single cellular? brown all multicelled
Q: blades, stipe, holdfast, plasmodesmata, and algin as part of phaeophyceae
Answer:
blades: leaf
things
Stipe: the stem
holdfast: the root thingies
plasmodesmata: channels that connect the cytoplasm (protoplasm) from adjacent
cells
algin: in the cell wall; combined with cellulose, gives the algae a flexible, but strong
structure.
, Bio 230 unit 1 Questions and Answers with Verified Solutions | Latest
2026 Update
Q: how could a plant go from sporic meiosis to gametic meiosis?
Answer:
if they didn't form the gametophyte and instead, the spores became the gametes for
the zygote to form
Q: why does the formal taxonomic name of the red algae end in phyta while the
formal taxonomic name of the brown algae ends in phyceae?
Answer:
In summary, the differences in the endings "phyta" and "phyceae" reflect the
hierarchical classification of these algae. "Rhodophyta" (red algae) is a higher
taxonomic rank, indicating a distinct phylum within the plant kingdom, while
"Ochrophyta" (brown algae) is at a lower rank, often classified as a class within a
larger group, hence the use of "-phyceae."
Q: brown algae pigments: what groups is this similar to?
Answer:
a and c, carotenoids, mainly fucoxanthin. similar to diatoms and haptophytes
2026 Update
Q: pennate vs centric diatoms. are the gametes isogamous(the same) or oogamous
(different)?
Answer:
pennate: cut in half symmetrical. isogamous centric: circle symmetrical, oogamous
Q: what group is responsible for diatomites?
Answer:
diatoms
Q: what algal groups are stramenopiles?
Answer:
diatoms and brown algae (of the ones we have discussed)
Q: what is the cue for diatoms to reproduce secxually?
Answer:
they get too small
,Bio 230 unit 1 Questions and Answers with Verified Solutions | Latest
2026 Update
Q: cell surface of diatoms is made of what?
Answer:
silica
Q: phaeophyceae means what?
Answer:
mainly multicellular or single cellular? brown all multicelled
Q: blades, stipe, holdfast, plasmodesmata, and algin as part of phaeophyceae
Answer:
blades: leaf
things
Stipe: the stem
holdfast: the root thingies
plasmodesmata: channels that connect the cytoplasm (protoplasm) from adjacent
cells
algin: in the cell wall; combined with cellulose, gives the algae a flexible, but strong
structure.
, Bio 230 unit 1 Questions and Answers with Verified Solutions | Latest
2026 Update
Q: how could a plant go from sporic meiosis to gametic meiosis?
Answer:
if they didn't form the gametophyte and instead, the spores became the gametes for
the zygote to form
Q: why does the formal taxonomic name of the red algae end in phyta while the
formal taxonomic name of the brown algae ends in phyceae?
Answer:
In summary, the differences in the endings "phyta" and "phyceae" reflect the
hierarchical classification of these algae. "Rhodophyta" (red algae) is a higher
taxonomic rank, indicating a distinct phylum within the plant kingdom, while
"Ochrophyta" (brown algae) is at a lower rank, often classified as a class within a
larger group, hence the use of "-phyceae."
Q: brown algae pigments: what groups is this similar to?
Answer:
a and c, carotenoids, mainly fucoxanthin. similar to diatoms and haptophytes
