Modern Biology Chap 27 Vocab

Front 1

Algae

Back 1

autotrophic protists.

Front 2

Gametangia

Back 2

gamete chambers.

Front 3

Pyrenoids

Back 3

Organelles that synthesize and store starch.

Front 4

Thallus

Back 4

The body portion of an algae.

Front 5

Unicellular Algae

Back 5

A structure that consists of a single cell.

Front 6

Phytoplankton

Back 6

A population of photosynthetic organisms that forms the foundation of aquatic food chains.

Front 7

Colonial Algae

Back 7

(Volvox) Have a structure that consists of groups of cells acting in a coordinated manner.

Front 8

Filamentous Algae

Back 8

(Spiragyra) Slender, rod-shaped thallus composed of rows of cells joined end to end.

Front 9

Multicellular Algae

Back 9

Have a large complex thallus.

Front 10

Zoospores

Back 10

2 to 8 haploid flagellated cells.

Front 11

Antheridium

Back 11

A male unicellular gametangium.

Front 12

Oogonium

Back 12

A female unicellular gametangium.

Front 13

Holdfast

Back 13

The part of an algae thallus that anchors it to a substrate.

Front 14

Alternation of generations

Back 14

A sexual life cycle in plants and algae involving 2 or more phases.

Front 15

Gametophyte

Back 15

A haploid, gamete-producing pahse.

Front 16

Sporophyte

Back 16

A diploid, spore-producing phase.

Front 17

Sporangia

Back 17

Reproductive cells in adult sporophyte.

Front 18

Fucoxanthin

Back 18

Pigment that give algae their characteristic brown color

Front 19

Laminarin

Back 19

A carbohydrate with glucose untis that are linked differently than those in starch.

Front 20

Stripe

Back 20

The stem-like portion of the algae.

Front 21

Blade

Back 21

Leaf-like region, modified to capture sunlight for photosynthesis.

Front 22

Alginate

Back 22

a substance made from the alginic acid in the cell walls of Macrocystis
and that is used commercially in cosmetic, food and drug products.

Front 23

Phycoblins

Back 23

A pigment in red algae.

Front 24

Carageenan

Back 24

A substance found in the cell walls of red algae that is used commercially as a smoothing agent.

Front 25

Agar

Back 25

A gel-like base for culturing macrobes.

Front 26

Diatoms

Back 26

An abundant component of phytoplankton.

Front 27

Valve

Back 27

One half of diatom shell.

Front 28

Centric diatoms

Back 28

Marine diatoms with circular or triangular shells.

Front 29

Pennate Diatoms

Back 29

Freshwater diatoms with rectangular shells.

Front 30

Diatomaceous earth

Back 30

A layer of aquatic soil made of dead diatoms shells.

Front 31

Biouminescence

Back 31

Display of sparkly light often seen in ocean water at night.

Front 32

Red Tide

Back 32

Discoloration of sections of the ocean caused by a population explosion of certain dinoflagellates.

Front 33

Euglenoids

Back 33

Flagellated unicellular algae.

Front 34

Fruiting Body

Back 34

Spore-bearing structure of a slime mold during reproduction.

Front 35

Cellular Slime Molds

Back 35

Individual haploid cells that move about like amoebas.

Front 36

Pseudoplasmodium

Back 36

A coordinated colony of individual cells that resembles a slug, and it leaves a slimy trail as it crawls over decaying logs, leaves, and twigs.

Front 37

Plasmodial Slime Molds

Back 37

The multinucleate mass of cytoplasm that engulfs food by phagocytosis.

Front 38

Multinucleate

Back 38

Containing thousands of nuclei.

Front 39

Water Molds

Back 39

A fungus-like organism composed of branching filaments of cells.

Front 40

Plasmodium

Back 40

A Multinucleate cytoplasm of a slime mold surrounded by a membrane that moves as a mass.

Front 41

Blight

Back 41

A disease of plants characterized by quickly developing decay and discoloring of leaves, stems, and flowers.

Front 42

Chytrids

Back 42

Primarily aquatic protists characterized by gametes and zoospores with a single, posterior flagellum.

Front 43

Zygospore

Back 43

The protecticve structure that results when the wall surrounding a zygote thickens.