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: Bikont algae
② Contains fucoxanthin
○ Contains diatoxanthin: Diatom
○ Lacks diatoxanthin: 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 algin and lacks vascular bundles.
⑵ Algin: Substance that forms the gel in the cell walls
3. Green Algae (Charophyta)
⑴ Lacks vascular bundles.
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 charophyta and land plants.
Input: 2019.03.17 11:23