EME Exam 1

Isomorphic alterations of generations

Both generations have the same morphology and structure, differing only in their reproductive roles.

Heteromorphic alterations of generations

Both generations differ in morphology, with distinct forms and structures.

Example of Isomorphic

Ulva lactuca is an example of isomorphic alternation of generations, where both the gametophyte and sporophyte stages are morphologically similar.

Green Algae

Ulva lactuca

Green algae

Ulva intestinalis

Green algae

Cladophora serecia

green algae

Cladophora albida

green algae

siphonous

dichotomous

Codium fragile ssp. tomentosoides

green algae

Rhizoclonium tortuosum

green algae (Chlorophyta)

stiff, wiry and unbranched filaments

uniseriate filaments

Chaetomorpha melagonium

green algae (Chlorophyta)

distromatic blade

flat wedged blades

blades are monostromatic

Prasiola stipitata

red algae

has forcipate tips (crab hands)

cortification present

Ceramium virgatum

red algae

has pericentral cells and an axial cell

Polysiphonia harveyi

Red algae

Verbrata Lenosa

red algae

Chondrus crispus

red algae

flattened blade w/ bumps

Mastacarpus stellatus

red algae (Rhodophyta)

Corallina officinalis

red algae (rhodophyte)

sushi wrapper

Poryphora sp. (sushi wrapper)

red algae (rhodophyte)

spagetti

Dumontia contorta

red algae (rhodophyte)

Ahnfeltia plicata

red algae (rhodophyte)

pirates blood

red crust

Hildenbrandia rubra

Odontoceti

toothed whale - Orcinus orcas, Lagenorhynchus acutus

Mysticeti

filter-feeder whale - Balaenoptera physalu, Balaenoptera acutorostrata, Eubalaena glacialis