LAB 9

Question 1

Seedless vascular plants dominated the landscape from ______ to _______

Answer 1

Mid-Silurian

Carboniferous

Question 2

Two groups studied in lab

Answer 2

Lycopodiphyta

Polypodiophyta

Question 3

What do Lycopodiophyta and polypodiophyta posses

Answer 3

-Well developed leaves
-sporophylls
-roots
-true vascular tissue
Xylem and phloem

Question 4

How do seedless vascular plants reproduce

Answer 4

windblown spores

Question 5

Oldest extant vascular plant division

Answer 5

Lycopodiophyta

Question 6

Lycopodiophyta contain

Answer 6

Club mosses and spike mosses

Question 7

What are distinguishing characteristics of lycopodiophyta

Answer 7

• microphylls with only a single unbranched vein
• transverse dehiscence of sporangia
• stroboli

Question 8

Club mosses develop around roots along a horizontal stem called a

Answer 8

rhizome

Question 9

Homosporous

Answer 9

-producing a single type of spore that bears both male and female organs

Question 10

Club mosses are _______

Answer 10

homosporous

Question 11

Where do strobili occur

Answer 11

at the end of an upright stem

Question 12

Characteristics of lycopodium (club moss) spore

Answer 12

• high fat content
• large surface area per area unit volume
• flammable

Question 13

Microphylls of spike mosses

Answer 13

• simple a scale like

- branching vascular trace

Question 14

Microphyll of club moss

Answer 14

• thickly cover stem

- may or may not branch

Question 15

What type of spores do spike mosses produce

Answer 15

• Heterosporous

- Megaspores

Question 16

Heterosporous

Answer 16

produce two types of spores

Question 17

Ancestors of horsetails reached their peak in the

Answer 17

late paleozoic

Question 18

Synapomorphy for horsetails

Answer 18

helical thinking of the sporangial wall

Question 19

Horsetails may be the

Answer 19

oldest surviving genus

Question 20

Characteristics of horsetails

Answer 20

• jointed stem
• rough texture
• leaves are whorled

Question 21

Extant gymnosperm phyla

Answer 21

Cycadophyta
Ginkgophyta
Gnetophta
Coniferophyta

Question 22

Annulus

Answer 22

Ring or band of thickened cells that runs around the spherical sporangium

Question 23

Blade

Answer 23

The leafy part of the frond

Question 24

Costa

Answer 24

the mid vein of the pinna

Question 25

Indusium

Answer 25

a specialized flap of tissue that covers and protects the sorus

Question 26

Pinna

Answer 26

a subdivision of the blade when the blade is fully divided to the rachis, not just lobed

Question 27

Pinnule

Answer 27

a subdivision of phyla that is fully divided to the costa, not just lobed

Question 28

Rachis

Answer 28

the central axis of the blade that bears pinnae

Question 29

Rhizome

Answer 29

the stem of the fern, produces roots below and above the frond

Question 30

Sorus

Answer 30

a cluster of sporangia, shape can determine the type of fern

Question 31

Stipe

Answer 31

the stalked portion of the frond arising from the rhizome