A Cladogram of Plant Groups – shows evolutionary relationships of plants Flowering plants Cone-bearing plants Ferns and their relatives Mosses and their relatives Green algae ancestor Flowers; Seeds Enclosed in Fruit Seeds Water-Conducting (Vascular) Tissue
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A Cladogram of Plant Groups – shows evolutionary relationships of plants Flowering plants Cone-bearing plants Ferns and their relatives Mosses and their.
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A Cladogram of Plant Groups – shows evolutionary relationships of plants
Floweringplants
Cone-bearingplants
Ferns andtheir relatives
Mosses andtheir relatives
Green algaeancestor
Flowers; SeedsEnclosed in Fruit
Seeds
Water-Conducting(Vascular) Tissue
The Diversity of Plants
Cone-bearing plants760 species
Ferns andtheir relatives11,000 species
Mosses andtheir relatives15,600 species
Floweringplants235,000 species
Structure of a Leaf - the cuticle protects the leaf against transpiration
Veins
Xylem
PhloemVein
Cuticle
Epidermis
Palisademesophyll
Epidermis
Stoma
Guardcells
Spongymesophyll
are categorized as
that completetheir life cycle in
that completetheir life cycle in
that completetheir life cycle in
Plants
Annuals Biennials Perennials
1 growingseason 2 years
More than2 years
Types of Plants – Seedless
•Mosses (Bryophytes)
•Ferns (Pterophyta)
Types of Plants - seeds
• Cone Bearing (Gymnosperms)
• Flowering (Angiosperm)
Gymnosperms vs AngiospermsComparing Features of Seed Plants
Feature
Seeds
Reproduction
Examples
Gymnosperms Angiosperms
Bear their seeds on cones
Can reproduce without water; male gametophytes are contained in pollen grains; fertilization occurs by pollination
Conifers, cycads, ginkgoes, gnetophytes
Bear their seeds within flowers
Can reproduce without water; male gametophytes are contained in pollen grains; fertilization occurs by pollination
Grasses, flowering trees and shrubs, wildflowers, cultivated flowers
Flower Functions
• Sexual Reproduction!• Flowers are pollinated by:– Wind– Insects– Birds
FLOWER PARTS
• Pistil – female part of the plant– Contains the stigma, style and ovary (surround and protect
the seeds)
FLOWER PARTS
• Stamen – male part of the plant– Contains the anther and filament