Plant Biology 308 Lab 4

Front 1

What are the 2 phyla that make up the seedless vascular plants? what are their common names.

Back 1

Lycopodiophyta (lycophytes, fern "ally)
Pteriodophyta (ferns and other fern allies)

Front 2

What is the dominant generation for seedless vascular plants?

Back 2

sporophyte

Front 3

What are seedless vascular plants called?

Back 3

lycophytes

Front 4

What kind of leaves do lycophytes and pteriodophytes have?

Back 4

Lycopodiophyta-microphylls
Pteridophytes- megaphylls

Front 5

What is the difference between microphylls and megaphylls?

Back 5

microphylls- small leaves w/ one vein
megaphylls- large leaves w/ several veins

Front 6

Describe lycophytes.

Back 6

have true stems, leaves and roots w/ sporangia borne on the upper surfaces of sporophylls which are fertile microphylls

Front 7

What are sporophylls?

Back 7

fertile microphylls

Front 8

What are ligules?

Back 8

(flap-like structures arising from upper surface of the sporophyll)

Front 9

What is homosporous?

Back 9

they have spores of all the same type;produce bisexual gametophytes (male and female gametangia on the same plant) but are functionally unisexual

Front 10

What is heterosporous?

Back 10

they produce two types of spores

Front 11

What is a microspore vs. a megaspore?

Back 11

microspore- produces male gametophyte with antheridia
megaspore- produces the female gametophyte w/ archegonia

Front 12

What are the three families of lycophytes?

Back 12

Lycopodiaceae, Selaginalleceae and Isoetaceae

Front 13

Which of the three families of Lycopodiophyta aer homosporous and which are heterosporous?

Back 13

Lycopodiaceae- homosporous
Isoeataceae and Selaginellaceae- heterosporous

Front 14

What family in the Lycopodiophyta are club mosses?

Back 14

Lycopodiaceae

Front 15

What are strobili?

Back 15

sporophylls that are confined to the tips of branches having determinant growth-lack chlorophyll when mature

Front 16

Where does the gametophyte develop in the family Lycopodiaceae?

Back 16

exosporic-develops outside the spore

Front 17

Label the stem axis, sporophylls and sporngia on the picture.

Back 17

sporophylls bear the sporangia

Front 18

why is the Selaginella known as the "resurrection plant?

Back 18

because it will become a tight ball during drought periods but will expand and lie flat with moisture

Front 19

How are sporophylls in heterosporous plants grouped?

Back 19

megasporophylls w/ megasporangia that consist of megaspores
and microsporophylls w/ microsporangia w/ microspores

Front 20

What family and commonname is this plant.

Back 20

Selaginellacae
Selaginella

Front 21

identify the microsporangium, megasporophyll, megasporangium and ligule

Back 21

identify the microsporangium, megasporophyll, megasporangium and ligule

Front 22

What plant strobilus is this? Lycopodiaceae or Selaginella?

Back 22

Lycopodiaceae

Front 23

What are the two type of spores produced by Selaginella?

Back 23

microspores and megaspores

Front 24

What is different about homosporous and heterosporous gametophyte development?

Back 24

homosporous-develop outside the spore wall-exosporic
heterosporous-endosporic

Front 25

What is the family for quillworts?

Back 25

Isoetaceae

Front 26

What is the difference between the Selaginella life cycle in comparison to the Isoetes life cycle?

Back 26

Selaginella-bi-flagellate sperm
Isoetes-multi-flagellate

Front 27

What is the family and common name of this plant?

Back 27

Isoetaceae
quillworts

Front 28

What seedless vascular plants that include horsetails whisk ferns and ferns in them called?

Back 28

Pteridophytes

Front 29

What are lycophytes, whisk ferns and horsetails considerede?

Back 29

fern allies

Front 30

What are the two main distinguishing features of the Phylums Lycopodiophyta and Pteridophyta?

Back 30

1. presence of microphylls in Lycopodiophyta-biflagellate sperm and megaphylls in Pteridophyta-multiflagellate sperm

Front 31

What is the order for horsetails and whisk ferns?

Back 31

Horsetails- Equisetales
whisk ferns- Psilotales

Front 32

What is the order Equisetales characterized by?

Back 32

jointed stems bearing whorls of leaves and lateral branches- small microphyll-like leaves

Front 33

Which of the Pteridophytes are homosporous?

Back 33

horsetails, whisk ferns and some ferns

Front 34

What is the dominant generation for the Pteridophyta?

Back 34

sporophyte

Front 35

What is the order and common name of the plant?

Back 35

Equisetales
horsetail

Front 36

What is a rhizome?

Back 36

underground portion of stem in horsetails

Front 37

What do horsetails have instead of sporophylls?

Back 37

sporangiophores

Front 38

What are elaters?

Back 38

thickened bands that arise from the outer layer of the spore wall

Front 39

Describe the Order Psilotales.

Back 39

rootless, tropical epiphytes

Front 40

Which seedless vascular plants have rhizoids?

Back 40

Equisetales, Psilotales, lycopods

Front 41

Which seedless plants need water to disperse?

Back 41

Bryophytes, Lycopodiaceae, Equisetum

Front 42

What is the common name and order of this plant?

Back 42

whisk ferns
Psilotales

Front 43

Describe how the sporangia are arranged in the Psilotales family.

Back 43

in threes on the salelike outgrowths

Front 44

What is this an image of?

Back 44

fern prothallus