BSC 464 EXAM 2: RED ALGAE 2025/2026
QUESTIONS AND ANSWERS 100% PASS
What is the common name for the genus Porphyra? - ANS aka Nori
Name of British phycologist that discovered the life cycle of Porphyra? - ANS Dr. Kathleen
Mary Drew
Rhodophyta - ANS phylum of red algae
Where do red algae primarily live? - ANS mostly marine and 3% freshwater
What types of pigments do Rhodophyta contain? - ANS chlorophyll a and phycobilisomes;
chloroplast with seperated thyalkoids never forming grana
What is the carbohydrate reserve in red algae? - ANS floridean starch
What is a main distinction factor in red algae? - ANS lack flagella
Describe the cell wall of red algae? - ANS Cellulose + phycocolloid matrix (agar and
carrageenan) with pit connections and plugs between cells
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
, What kind of thalli are in red algae? - ANS pseudoparenchymatic
What kind of life cycle belongs to red algae? - ANS complex, specialized oogamy with
alternation of 3 generations: 1) gametophyte 2) tetrasporophyte 3) carposporophyte
What kind of endosymbiosis event took place to form red algae? - ANS primary
endosymbiosis (eukaryote digest cyanobacterium)
How many membranes in primary plastid? - ANS 2 membranes (one from cyanobacterium,
one from digestive vacuole)
What is the only order of red algae with a fossil record? - ANS Corallinales (important in
formation of tropical reefs)
What is the oldest fossilized eukaryotic organism? - ANS Bangiomorpha pubescens
What kind of habitats are red algae usually in? - ANS hard bottom habitats
epiphytes - ANS on other algae
epizoic - ANS grow on animals
epilithic - ANS grow on rocks
psammophilic - ANS grows on sand
Where are red algae most abundant? - ANS tropical oceans
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
QUESTIONS AND ANSWERS 100% PASS
What is the common name for the genus Porphyra? - ANS aka Nori
Name of British phycologist that discovered the life cycle of Porphyra? - ANS Dr. Kathleen
Mary Drew
Rhodophyta - ANS phylum of red algae
Where do red algae primarily live? - ANS mostly marine and 3% freshwater
What types of pigments do Rhodophyta contain? - ANS chlorophyll a and phycobilisomes;
chloroplast with seperated thyalkoids never forming grana
What is the carbohydrate reserve in red algae? - ANS floridean starch
What is a main distinction factor in red algae? - ANS lack flagella
Describe the cell wall of red algae? - ANS Cellulose + phycocolloid matrix (agar and
carrageenan) with pit connections and plugs between cells
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
, What kind of thalli are in red algae? - ANS pseudoparenchymatic
What kind of life cycle belongs to red algae? - ANS complex, specialized oogamy with
alternation of 3 generations: 1) gametophyte 2) tetrasporophyte 3) carposporophyte
What kind of endosymbiosis event took place to form red algae? - ANS primary
endosymbiosis (eukaryote digest cyanobacterium)
How many membranes in primary plastid? - ANS 2 membranes (one from cyanobacterium,
one from digestive vacuole)
What is the only order of red algae with a fossil record? - ANS Corallinales (important in
formation of tropical reefs)
What is the oldest fossilized eukaryotic organism? - ANS Bangiomorpha pubescens
What kind of habitats are red algae usually in? - ANS hard bottom habitats
epiphytes - ANS on other algae
epizoic - ANS grow on animals
epilithic - ANS grow on rocks
psammophilic - ANS grows on sand
Where are red algae most abundant? - ANS tropical oceans
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
