Biology 11 Plantae Review.

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Flowers contain reproductive organs protected by specialized leaves.
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Presentation transcript:

Biology 11 Plantae Review

Objectives REVIEW REVIEW REVIEW!!

Typical Bryophyta Life Cycle

Typical Pteridophyta Life Cycle

Typical Gymnosperm Life Cycle

Typical Angiosperm Life Cycle Polar nuclei Pollen grains male gametophyte in pollen (haploid) Egg cell fertilization female gametophyte in ovary (haploid) sporophyte in seed (diploid)

Sporophyte most dominant

First land plants Bryophytes: mosses & liverworts non-vascular no water transport system no true roots swimming sperm flagellated sperm lifecycle dominated by haploid gametophyte stage fuzzy moss plant you are familiar with is haploid spores for reproduction haploid cells which sprout to form gametophyte haploid diploid Where must mosses live?

First vascular plants Pteridophytes: the ferns vascular swimming sperm diploid Pteridophytes: the ferns vascular water transport system xylem, phloem, roots, leaves swimming sperm flagellated sperm life cycle dominated by sporophyte stage leafy fern plant you are familiar with is diploid fragile gametophyte spores for reproduction haploid cells which sprout to form gametophyte haploid Where must ferns live?

Seeded Vascular Plants Gymnosperm: conifers vascular heterospory male vs. female gametophytes seeds naked seeds (no fruit) pollen contain male gametophyte life cycle dominated by sporophyte stage coniferous trees you are familiar with are diploid reduced (microscopic) gametophyte reduction of gametophyte protects delicate egg & embryo in protective sporophyte protected from drought & UV radiation

Angiosperm Body Plan Overview

Body Plan The Angiosperms have four principle organ systems: 1. Leaves: 2. Stems: 3. Roots: 4. Flowers:

Flower Function to attract a pollinator Modified shoot with 4 rings of modified leaves sepals petals stamens male carpel female Anther Filament Stamen Stigma Style Ovary Carpel Sepal Petal Ovule sepals petals stamens carpel

Compare & Contrast: Monoecious/dioecious Homospory/heterospory Vascular/non-vascular Xylem/phloem Gametophyte/sporophyte Rhyzoids/hyphae/roots Monocot/dicot Stamen/carpel/antheridia/archegonia

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