(11) Station 1- 4(Protista cont)

What characteristics are found in the supergroup Archaeplastida?

• similar DNA sequences and cell structure

When did the supergroup Archaeplastida evolve ?

Over a billion years ago

What are the 4 clades included in the supergroup Archaeplastida?

• Rhodophyta (red algae)

• Chlorophyta

• Charophyta (green algae)

• Higher plants

What characteristics are found in the Clade Rhodophyta?

• reddish in color (pigment: phycoerythrin)

• Their life cycle lacks a flagellated stage

Where do red algae live?

Warm coastal waters of tropical oceans

How is red algae used?

Eaten as “nori” the wrap around sushi

The red algae plant in the fingerbowl belongs to which generation?

Either a structure is haploid(n) or tetraploid (4n)

What characteristics are found in the Clade Chlorophytes?

Similar to higher plants in color (pigment: chlorophyll A and B and carotenoids)

What is the name of the kingdom some cladists want to combine Chlorophytes and higher plants in?

Virdiplantae

Where are Chlorophytes found?

Maine, freshwater, and terrestrial ecosystems, some are found in snow

What 2 groups are commonly called “green algae” ?

Chlorophyta, charophyted

What is the cellular organization for volvox?

Colonial

What are unique characteristics to identify Volvox?

Vegetative cells, protoplasmic strands, and daughter colonies

What’s the habitat of Volvox?

Ponds, ditches, shallow puddles

What’s the cellular organization of Protococcus?

Unicellular

What is Protococcus often confused with?

Mosses

What’s the habitat of Protococcus?

Thin, green covering on the moist shaded side of trees, rocks, and soil

What’s the cellular organization of Ulothrix?

Multicellular filaments

What are unique characteristics to identify Ulothrix?

Chloroplasts

What Ulothrix structure demonstrates specialization?

Holdfast

Are the Ulothrix filaments haploid or diploid?

Haploid

What’s the habitat of Ulothrix?

freshwater and marine environments