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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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Presentation on theme: "A Cladogram of Plant Groups – shows evolutionary relationships of plants Flowering plants Cone-bearing plants Ferns and their relatives Mosses and their."— Presentation transcript:

1 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

2 The Diversity of Plants Cone-bearing plants 760 species Ferns and their relatives 11,000 species Mosses and their relatives 15,600 species Flowering plants 235,000 species

3 Structure of a Leaf - the cuticle protects the leaf against transpiration Veins Xylem Phloem Vein Cuticle Epidermis Palisade mesophyll Epidermis Stoma Guard cells Spongy mesophyll

4 are categorized as that complete their life cycle in Plants Annuals Biennials Perennials 1 growing season 2 years More than 2 years

5 Types of Plants – Seedless Mosses (Bryophytes) Ferns (Pterophyta)

6 Types of Plants - seeds Cone Bearing (Gymnosperms) Flowering (Angiosperm)

7 Gymnosperms vs Angiosperms Comparing Features of Seed Plants Feature Seeds Reproduction Examples Feature Seeds Reproduction Examples GymnospermsAngiosperms 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

8 Comparison of Monocots and Dicots MonocotsDicots Seeds Leaves Flowers Stems Roots Single cotyledon Parallel veins Floral parts often in multiples of 3 Vascular bundles scattered throughout stem Fibrous roots Two cotyledons Branched veins Floral parts often in multiples of 4 or 5 Vascular bundles arranged in a ring Taproot Figure 22–25Comparison of Monocots and Dicots

9 Flower Functions Sexual Reproduction! Flowers are pollinated by: – Wind – Insects – Birds

10 Fruit – after pollination the ovary develops a wall of tissue surrounding the seed

11 FLOWER PARTS Pistil – female part of the plant – Contains the stigma, style and ovary (surround and protect the seeds)

12 FLOWER PARTS Stamen – male part of the plant – Contains the anther and filament

13 FLOWER PARTS Petals – colorful, leaflike structures Sepals – green leaflike structures at the base of the flower

14 The structure of a flower. Filament Anther Stigma Style Ovary Carpel Petal Sepal Ovule Stamen

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17 Transpiration Evaporation of water molecules out of leaves. Pull of water molecules upward from the roots. AB


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