Ch_23B_Gymnosperms Flashcards
1st trees
Gymnosperm
1rst tree with flying sperm aka pollen
Gymnosperm
Naked Seed
no protective ovary
number of Gymnosperm tree and shrub species
760
number of Gymnosperm conifer species
550
Gymnosperm resin use
insect resistance
Gymnosperms have highly developed _ and _ tissues
root, stem
Gymnosperm groups/phyla
Conifers, Ginkgoes, Cycads, Gnetophytes
Phlyum Confierophyta common word
Conifer
Redwood type
Conifer
Pine type
Conifer
Fir type
Conifer
Juniper type
Conifer
Cypress type
Conifer
Redwood type
Conifer
largest tree species
Sequoia
Do Conifers have needles or leaves
needles
Monoecious
male and female on same individual plant
Are conifers monoecious or diecious?
monoecious
Largest Living Thing On Earth
The Gerenal Sherman Tree, a Sequoia Conifer
Conifer that grows in swamps
Cypress trees
Microspores common term
pollen
Where do pollen develop on Gymnosperms
male cones
After pollen release, the male cones _
die
Megaspores common term
eggs
Where do megaspores form on Gymnosperms
female cones
after fertilization, how long does seed development take for Conifers?
3 years
Only tree in Ginkgophyta
Ginkgoes
Ginkgoes common name
Maidenhair Tree
The only deciduous Gymnosperm
Maidenhair Tree
Are Maidenhair Trees dioecious or monoecious?
dioecious
Who cultivated Ginkgoes and kept the species alive
Buddhists in China
Oldest tree in fossil record
Ginkgoes
Ginkgoes produce _ sperm
swimming
Female Ginkgoes produce fruit that _ and have _ seeds
smell foul, edible
Ginkgoe leaves are processed for _, which some claim helps with _
Ginkgoba, circulation
Phylum Cycadophyta common term
The Cycads
Common term for Cycads on lawns
Sago Palms
Number of Cycad species
140
Cycad are located naturally in the _
tropics
Cycad plants are _oecious
di
Cycad produce large cone-shaped _
strobili
Male Cycad Strobuli produce _, and female Cycad Strobuli produce _
pollen, ovule
Cycad seeds are edible only after _
poison coat removed
Phylum Gnetophyta another term
Gnetophytes
number of Gnetophyta species
70
Common species of Gnetophyta
Gnetum and Ephedra
Genotphyte cones have similar life cycles and semblance to _
flowers
Advanced Gymnosperms have efficient _
water transport
tropical broad-leaved shrubs and vines, leaves resemble flowers
Gnetum
_ Resemble horsetails but with jointed stems
Ephedra
Ephedra is a type of _
Gnetophytes
This plant use to make drug ephedrine
Ephedra
uses of ephedrine
raises blood pressure and heart stimulant
