botany Lecture 15 Exam Questions and
Answers with Verified Solutions | Latest
Updated 2026
What are the primary unifying They are eukaryotes that lack the
features of organisms in the distinguishing
Kingdom features of plants, animals, or fungi.
Protista?
Why are protists considered a They are comprised of several unrelated
polyphyletic group? lineages
rather than a single common ancestor.
What is the 'thallus' type of A body structure composed of sheets or
organization in algae? filaments
of similar cell types with little to no tissue
differentiation.
What are the main criteria used for Biochemical and structural characteristics,
algal classification? pigment
composition, chloroplast structure, cell wall
composition, flagella characteristics, food
storage
products, and habitat.
What percentage of global 50-70%.
photosynthesis is attributed to
algae?
, What are zooxanthellae? Photosynthetic algal symbionts that live
within
invertebrates, such as those found in coral
reefs.
What is a 'red tide'? A toxic algal bloom that can have harmful
ecological and economic impacts.
What are three economically Agar, carrageenan, and diatomaceous
important products derived from earth.
algae?
How do Cyanobacteria differ from They are prokaryotic (Kingdom Monera),
other algae in terms of cellular whereas
structure? other algae are eukaryotic.
What is the function of heterocysts They are specialized cells where nitrogen
in fixation
Cyanobacteria? occurs.
What are stromatolites? Fossilized structures created by
cyanobacteria that
date back approximately 3.5 billion years.
What is the endosymbiotic theory The theory that chloroplasts originated
regarding chloroplasts? from a
cyanobacterium engulfed by a
proto-eukaryote
approximately 2 billion years ago.
Answers with Verified Solutions | Latest
Updated 2026
What are the primary unifying They are eukaryotes that lack the
features of organisms in the distinguishing
Kingdom features of plants, animals, or fungi.
Protista?
Why are protists considered a They are comprised of several unrelated
polyphyletic group? lineages
rather than a single common ancestor.
What is the 'thallus' type of A body structure composed of sheets or
organization in algae? filaments
of similar cell types with little to no tissue
differentiation.
What are the main criteria used for Biochemical and structural characteristics,
algal classification? pigment
composition, chloroplast structure, cell wall
composition, flagella characteristics, food
storage
products, and habitat.
What percentage of global 50-70%.
photosynthesis is attributed to
algae?
, What are zooxanthellae? Photosynthetic algal symbionts that live
within
invertebrates, such as those found in coral
reefs.
What is a 'red tide'? A toxic algal bloom that can have harmful
ecological and economic impacts.
What are three economically Agar, carrageenan, and diatomaceous
important products derived from earth.
algae?
How do Cyanobacteria differ from They are prokaryotic (Kingdom Monera),
other algae in terms of cellular whereas
structure? other algae are eukaryotic.
What is the function of heterocysts They are specialized cells where nitrogen
in fixation
Cyanobacteria? occurs.
What are stromatolites? Fossilized structures created by
cyanobacteria that
date back approximately 3.5 billion years.
What is the endosymbiotic theory The theory that chloroplasts originated
regarding chloroplasts? from a
cyanobacterium engulfed by a
proto-eukaryote
approximately 2 billion years ago.
