Lecture 2: Plants Flashcards
Cyanobacteria
Use chlorophyll a and produce O2
Photosynthesis
CO2 +H2O (+ light energy) –> sugar + O2
Primary endosymbiosis
A Cyanobacteria was engulfed. Chloroplast has two membranes
This produced the first photosynthetic eukaryotes
Secondary endosymbiosis
A eukaryote engulfed a eukaryotic algal ( red or green) cell which became chloroplast
In these organisms, the chloroplast has three membranes
Euglenoids
Secondary endosymbiosis where green algae are the endosymbionts
Stramenopiles
Secondary endosymbiosis where red algae are the endosymbionts
(Brown algae, golden brown algae, diatoms)
Dinoflagellates
Secondary and tertiary endosymbiosis
Still produce characteristic red algal pigments (secondary) and have proper chloroplasts derived from brown algae (tertiary)
Plantae
That Claude ( of eukaryotic life) with chloroplasts derived from primary endosymbiosis
Red algae
- Vary from single-celled to elaborate branched multicellular organisms
- They have cellulose cell walls
- They only have chlorophyll a (like Cyanobacteria)
Green plant
- Eukaryote with chloroplasts derived from primary endosymbiosis (same as all plants
- Chloroplasts with chlorophyll a and b
- Store carbohydrates as starch
Photoautotrophes
Perform photosynthesis; use CO2 as carbon source