Chapter 28. Algae
Recommended article : 【Biology】 Biology Index
1. Classification of Photosynthetic Algae
2. Brown Algae
3. Green Algae
1. Classification of Photosynthetic Algae
⑴ Contains chlorophyll a and c
① Lacks fucoxanthin : Diatoms
② Contains fucoxanthin
○ Contains chrysolaminarin : Chrysophytes
○ Lacks chrysolaminarin : Brown Algae
⑵ Contains chlorophyll a and d : Red Algae
① Red algae perform photosynthesis with phycoerythrin and phycocyanin
⑶ Contains chlorophyll a and b
① Single-celled organisms with eye spots and contractile vacuoles : Euglenoids
② Multicellular organisms with eye spots and contractile vacuoles : Green Algae
2. Brown Algae
⑴ Contains alginic acid, lacks holdfast
⑵ Alginic acid : Substance that forms the gel in the cell walls
3. Green Algae (Chlorophyta)
⑴ Lacks holdfast
① Cannot develop root for absorbing water and minerals
② Has rhizoids instead of roots
○ Rhizoids lack tissue differentiation, thus cannot perform the primary role of water and mineral absorption
○ Rhizoids only serve the purpose of support
⑵ Possesses rosette-shaped cellulose synthesis enzyme
① Rosette-shaped cellulose synthesis enzyme is a trait shared only by chlorophytes and land plants
Input : 2019.03.17 11:23