kingdom plantae. what is a plant? multicellular eukaryotes that are photosynthetic autotrophs cell...
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Kingdom PlantaeKingdom Plantae
What Is a Plant?What Is a Plant?Multicellular eukaryotes that are
photosynthetic autotrophsCell walls made of celluloseStore surplus carbohydrates as
starchMostly terrestrial
Obstacles Plants Overcome Obstacles Plants Overcome
Absorb MineralsConserve Water– Cuticle– Stomata– Guard Cells
Reproduce on Land
A Vascular System Enables A Vascular System Enables Plants to Thrive on LandPlants to Thrive on Land
Most plants need a “plumbing” system to transport water, minerals and nutrients. This system is known as the VASCULAR SYSTEM.
Divisions of Living Plants Are Divided Divisions of Living Plants Are Divided into Nonvascular and Vascularinto Nonvascular and Vascular
There are 3 divisions of nonvascular plants– Hepatophyta – the Liverworts
• Simplest of plants (gametophytes are dominate • Flat leafy body lacking cuticle, stomata, roots, stems
or leaves– Anthocerophyta – the Hornworts
• Dominate gametophyte and have stomata– Bryophyta – the mosses
• Small, most have simple vascular tissue• Sporophyte with slender stalk and spore capsule• “leafy” green gametophyte that lacks roots, stems
and leaves
Alternation Of GenerationsAlternation Of Generations Occurs in life cycle of all plantsOccurs in life cycle of all plants One generation is a multicellular haploid One generation is a multicellular haploid
condition and the next is a multicellular condition and the next is a multicellular diploid conditiondiploid condition
GametesGametesArchegoniaArchegonia–Produce eggsProduce eggs
AntheridiaAntheridia–Produce spermProduce sperm
When water is available, When water is available, sperm swim to the eggssperm swim to the eggs
Features of Vascular PlantsFeatures of Vascular PlantsDominate sporophyteDominate sporophyteSpecialized conducting cellsSpecialized conducting cellsDistinctive body formDistinctive body form–MeristemMeristem• ShootsShoots• RootsRoots
Life Cycle of a Fern
Evolution of the SeedEvolution of the SeedThere are 5 phyla of living
seed plants. Four of these phyla are collectively known as GYMNOSPERM.
The other phyla is ANGIOSPERMS.
Seed plants produce two kinds of gametophytes.–Microgametophyte – produce
male–Megagametophyte – produce
female – These develop from a megaspore within the ovule.
A pollen grain consists of only a few haploid cells surrounded by a thick protective wall.
PollinationPollination
WindInsectsanimals
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