Seedless plant diversity

Red algae

lack flagella and centrioles

use a photosynthetic pigment called phycoerythrin

Rhodophyta

green algae

flagellated cells.

Some unicellular

filamentous

colonial

multicellular bodies.

Chlorophyta

Unicellular (green algae)

resemble the gametes of more complex

chlorophytes

Chlamydomonas

Colonial (green algae)

moves with flagella

Dark spots inside each colony are daughter colonies

Volvox

Filamentous (green algae)

Spirogyra

Multicellular

Ulva

true mosses

Liverworts

Bryophyta

do not have true leaves

true stems

or true roots.

Nutrients and water are absorbed across the entire plant body

True mosses

Gemmae cups

Thallus

Pores

Rhizoids 

Live liverworts

Moss antheridium

Moss archegonium

Liverwort antheridium

Liverwort archegonium 

Moss sporophyte (capsule)

Liverwort sporophyte

Club mosses

Spike mosses

Lycophyta

true roots

true stems

true leaves

Club mosses

true roots

true stems

true leaves

Spike mosses

producing two types of spores:

Macrospores and microspores

Selaginella strobilus

heterosporous

Produces one type of spores:

Asexual spore

Lycopodium strobilus

homosporous

Ferns

Horsetails

Whisk ferns

Monilophyta

Whisk fern

Horsetails

Sporophyll

Sori

Indusia

Spores

live fern sporophytes

fern gametophytes archegonia

fern gametophytes antheridia

Other name for “horsetail”

Equisetum mature strobilus