Please enable JavaScript.
Coggle requires JavaScript to display documents.
Seed Plants 1: Seed Plants Without Flowers ("Gymnosperms")…
Seed Plants 1: Seed Plants Without Flowers ("Gymnosperms")
Concepts
Lignophytes
Woody plants
Spermatophytes
Seed plants
Gymnosperms
naked ovules
Angiosperms
Flowering plants
Division Progymnospermophyta: Progymnosperms
Aneurophytales
Relictual progymnosperms
Vascular Cambium
Secondary growth
Evolution of Seeds
Integument
Layer of tissue
Micropyle
Hole in integument
Pollen chamber
holds pollen
Archaeopteridales
Derived progymnosperms
Heterosporous
Division Pteridospermophyta: Seed Ferns
Upper Denovian Period
All extinct
Evolved from Aneurophytales
Division Coniferophyta: Conifers
Diverse
All trees
Long Shoots
Papery leaves
Short Shoots
Long needle leaves
Simple cones
Pollen cones
Compound cones
Seed cones
Cone bract
leaves
Ovuliferous Scale
Fused megasporophylls
Suspensor
Elongated first cells
Proembryo
Develop into embryo
Division Cycadophyta: Cycads
Short plants
No ovules
Dioecious
all tropical
Division Cycadeoidophyta: Cycadeoids
All extinct
Each ovule has stalk
Thick, fleshy scales
Division Ginkgophyta: Maidenhair Tree
Single species
Dioecious
Gymnospermous
Lacks vessels
Lack axial parenchyma
Division Gnetophyta
Anthophytes
Gnetophytes and flowering
Vines or shrubs
Tough plants
Compound pollen cones
Wide stems
Two leaves
