Unit 6

Front 1

stomata

Back 1

a tiny pore in the outer layer epidermis of a plant leaf or stem that controls the passing of water vapor and other gases into and out of the plant

Front 2

charophyte

Back 2

any green algae of the class Charophyceae (or group Charophyta), comprising the stoneworts.

Front 3

homosporous

Back 3

having the spores of one kind only

Front 4

heterosporours

Back 4

having more than one kind of spore

Front 5

mega spores

Back 5

one of four haploid spores, usually larger than the microspore, formed in the megasporangium from a megaspore mother cell, and from which the megagametophyte, or female gametophyte, develops.

Front 6

epiphytes

Back 6

A plant, such as a tropical orchid or a staghorn fern, that grows on another plant upon which it depends for mechanical support but not for nutrients. Also called aerophyte, air plant.

Front 7

ovule

Back 7

the plant part that contains the embryo sac and hence the female germ cell, which after fertilization develops into a seed.

Front 8

fiber

Back 8

fine, threadlike piece, as of cotton, jute, or asbestos.
2. a slender filament: a fiber of platinum.
3. filaments collectively.

Front 9

stamen

Back 9

the pollen-bearing organ of a flower, consisting of the filament and the anther.

Front 10

carpal

Back 10

relating to the bones in the wrist

Front 11

embyosac

Back 11

the megaspore of a seed-bearing plant, situated within the ovule, giving rise to the endosperm and forming the egg cell or nucleus from which the embryo plant develops after fertilization

Front 12

cross-pollination

Back 12

the transfer of pollen from the flower of one plant to the flower of a plant having a different genetic constitution.

Front 13

hyphae

Back 13

(in a fungus) one of the threadlike elements of the mycelium.

Front 14

mycelium

Back 14

the mass of hyphae that form the vegetative part of a fungus.

Front 15

septa

Back 15

a dividing wall, membrane, or the like, in a plant or animal structure; dissepiment

Front 16

coenocytic

Back 16

an organism made up of a multinucleate, continuous mass of protoplasm enclosed by one cell wall, as in some algae and fungi.

Front 17

plasmogamy

Back 17

the fusion of the protoplasts of cells

Front 18

karyogamy

Back 18

the fusion of the nuclei of cells, as in fertilization

Front 19

chytrids

Back 19

any of the simple, algaelike fungi constituting the class Chytridiomycetes, order Chytridiales, of aquatic and soil environments, having flagellated zoospores and little or no mycelium

Front 20

sac fungi

Back 20

a fungus that produces spores sexually inside a membranous spore case ascus, e.g. a yeast or truffle. Class Ascomycetes.

Front 21

asci

Back 21

the sac in ascomycetes in which the sexual spores are formed.

Front 22

ascocarp

Back 22

(in ascomycetous fungi) the fruiting body bearing the asci, as an apothecium or perithecium.

Front 23

conidia

Back 23

(in fungi) an asexual spore formed by abstriction at the top of a hyphal branch

Front 24

basidium

Back 24

a special form of sporophore, characteristic of basidiomycetous fungi, on which the sexual spores are borne, usually at the tips of slender projections.

Front 25

mold

Back 25

a growth of minute fungi forming on vegetable or animal matter, commonly as a downy or furry coating, and associated with decay or dampness.

Front 26

lichen

Back 26

any complex organism of the group Lichenes, composed of a fungus in symbiotic union with an alga and having a greenish, gray, yellow, brown, or blackish thallus that grows in leaflike, crustlike, or branching forms on rocks, trees, etc.

Front 27

soredia

Back 27

a group of algal cells surrounded by hyphal tissue, occurring on the surface of the thallus and functioning in vegetative reproduction.

Front 28

protoplasts

Back 28

the contents of a cell within the cell membrane, considered as a fundamental entity.
b. the primordial living unit or cell.