table plant ana assignment

8/6/2019 Table Plant Ana Assignment

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PTEROPHYTA

A

N

A

TO

M

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C

A

L

PSILOPHYT

ES

LYCOPHYTES EQUISETOPHY

TES

OPHIOGLOSSALES MARATTIALE

S

POLYPODIALES

Leaves lack

vascular

strand

The roots have an endarch

protoxylem. The

protoxylem refers to the

first tracheary cells thatdevelop within a patch of

xylem and that are

typically smaller and

thinner cell walls than the

later walls metaxylem.

The protoxylem forms in a

position interior to

metaxylem.

The stem of the lycophytes

have exarch protoxylem.

In the stems of lycophytes,

the protoxylem forms

exterior to metaxylem.

They have sporophytic leaf

structural type known as

lycophyll. It is

characterized as having an

intercalary meristem and

lacking a gap in thevasculature of the stem.

Have ribbed

stem, that is

often

associated witha hollow

canals.

The ribbed

stems contain

epidermal

cells that are

impregnated

with silica.

The stems are

hollow with

cross walls

called septa.

Equisetum areunique amongvascular plantsin containingchloroplastsand unique

among landplants in

having four ormore unusual

appendages

called elaters

They are heterotrophic.

Contain mycorrhizal

fungi and are oftensubtarranean.

They have

eusporangium. It is

derived from several

epidermal cells, and has

a sporangial wall

comprised of more than

one cell layer.

The sporangia

of marattiales

are

eusporangiate, like those

of all vascular

plants except

for the

leptosporangi

ate ferns.

In some of

marattiales,

the sporangia

are fused intoa common

structure, a

synangium.

A distinctive

apomorphy of

marattiales is

the

occurrence of

a polycylicsiphonostele

, which

appears as

concentric

rings of

siphonosteles

in cross

section


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M

O

R

P

H

O

L

OG

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C

A

L

Consists of

horizontal,

aerial,

photosynth

etic

rhizomes

Lack true

roots

Leaves are

peglike and

reduced in

size

Reproduces

by means

of spores

calledsynangia at

the tips of

short

branches

(whisk

ferns)

Generally

consists of

dichotomou

s stems

Have no leaves but

possessed lateral sporangia

(Zosterophylls)

Woody trees

(Lepidodendro Sigillaria

now extinct)

In

Carboniferous

period,

approximately

300 years ago,

equisetales

were large

woody trees.

They have

reduced,

whorled

leaves that

are usually

marginally

fused by

sporangiopho

res.

Equisitum

species

generally have

an extensive

underground

rhizome

system with an

adventitious

roots.

The ophioglossoid ferns

are unique in that each

leaf consists of a sterile

segment, which

contains the

photosynthethic blade

lamina, and a fertile

segment.

The underground

rhizomes which gives

rise to the unbranched

roots lack root hairs

and root branch.

They are

similar to

Polypodiales

or

leptosporangi

ate ferns in

general form,

having large

pinnate orbipinnate

leaves with

circinate

vernation,

sporangia

located on the

abaxial

surface of the

leaflets

blades.

Most

leptosporangiate

ferns have a

horizontal stem, the

rhizome, which is

underground but

may sprawl at

ground level.

Some of them have

erect aerial stem,

which in the so-

called tree ferns can

attain heights of 100

feet.

A few are vines, with

weak stems that

sprawl on the

ground or upon

another plant. The

leaves of ferns come

in a great variety of

forms


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table plant ana assignment

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