[BOTLAB] Seedless Vascular Plants

Small leaves

Simple Venation

Absent/No leaf gap

Microphyll lineage has:

[BLANK] leaves

[BLANK] venation

[BLANK] leaf gap

larger to reduced leaves

Complex venation

Present/With leaf gap

Megaphyll lineage has:

[BLANK] leaves

[BLANK] venation

[BLANK] leaf gap

Aerial and dichotomously branched, covered with microphylls

Stems of Class Lycopodiopsida

Sessile

Leaves of Class Lycopodiopsida

spiral, in pairs or in whorls

Leaf arrangement of Class Lycopodiopsida

Dichopodial roots

Class Lycopodiopsida has [BLANK] roots that are fibrous or adventitious

False; Class Lycopodiopsida are eusporangiate

T or F: All of Class Lycopodiopsida are leptosporangiate

Strobilus

Specialized cone-like structure at the terminals bearing the sporophylls

True

T or F: Lycopodium is homosporous

False; Both are heterosporous

T or F: Selaginella and Isoetes are homosporous

Aerial stems with megaphyll

Stems of Class Polypodiopsida

siphonostele

Xylem structure of Class Polypodiopsida

monopodial roots

Roots of Class Polypodiopsida

True

T or F: Most species of Class Polypodiopsida are leptosporangiate ferns

Horsetails

Common name of Order Equisetales

True

T or F: Order Equisetales has sporiangiophores

vallecular canals

What is structure number 4

carinal canal

What is structure number 3

Hollow pith or central canal

What is structure number 1

Order Equisetales (Horsetails)

Stems ribbed, with hollow canals

Megaphyll leaf highly reduced, whorled

Homospores with elaters

Presence of silica in the walls of some of the outer cells

Whisk ferns

Common name of Psilotum

False; Roots and leaves are lost

T or F: Psilotum has the presence of roots and leaves

Synangium

fusion product of two or three lobes of sporangia in whisk ferns that is born on bifid enations

True Ferns

Perennial, herbaceous

With conspicuous megaphyllous leaves (frond) comprising the blade and stalk (stipe)

endarch siphonostele

what is the structure of stems of true ferns

Present

Absent or Present: Roots on rhizomes in true ferns

Circinate vernation

manner in which a frond emerges in true ferns

Eusporangium

Sporangium arises from several epidermal cells of the sporophyll

Includes fern-allies and marratioid ferns

Leptosporangium

Sporangium arises from a single epidermal cell of the sporophyll

Includes the majority of true ferns

Receptacle

Structure D

sporangial body and stalk in Leptosporangium

Annulus

Structure A

one cell thick sporangium wall in Leptosporangium

Lip cells

Structure C

the stomium; region of thin-celled walls; structurally weakest, where sporangium splits to eject spores

Sorus

clusters of leptosporangium

Spores

What is the structure pointer in Letter B

indusium

flap tissue from the blade surface covers the sorus

Prothallus

photosynthetic, gametophytic body containing the gonia of ferns

Archegonium

what structure of he prothallus is pointed in number 1

Antheridium

what structure of he prothallus is pointed in number 2

Order Marattiales (Marattoid Ferns)

Bears all features of "true ferns"

Bears the largest fronds in ferns

False; polycyclic siphonostele

T or F: Marattoid Ferns has an endarch siphonostele

True

T or F: Marattoid Ferns is with eusporangium

Order Polypodiales (Common Fern)

Bears all features of "true ferns"

Large species diversity and form

False; leptosporangium

T or F: Order Polypodiales (Common Fern) is with eusporangium

Clubmoss

Common name of Lycopodium

Spikemoss

Common name of Selaginella

Quillwort

Common name of Isoetes