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THE PLANT KINGDOM. Without me, you’ll die!. What is a Plant?. Multicellular eukaryotes that are photosynthetic autotrophs Cell walls made of cellulose Store surplus carbohydrates as starch Mostly terrestrial . Plants are divided into two groups
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THE PLANT KINGDOM Without me, you’ll die!
What is a Plant? Multicellular eukaryotes that are photosynthetic autotrophs Cell walls made of cellulose Store surplus carbohydrates as starch Mostly terrestrial
Plants are divided into two groups Based on the presence or absence of an internal transport system for water and dissolved materials Called Vascular System Taxonomy Vascular Bundles
Vascular System Xylem tissue carries water and minerals upward from the roots Phloem tissue carries sugars made by photosynthesis from the leaves to where they will be stored or used Sap is the fluid carried inside the xylem or phloem
MAIN TYPES OF PLANTS Nonvascular Vascular Seedless Vascular Plants Mosses Liverworts Hornworts Seed-bearing Plants Naked-seeded Seeded
Do not have vascular tissue for support or conduction of materials Called Bryophytes Require a constantly moist environment Nonvascular Plants Sporophyte stage Gametophyte Stage Moss Gametophytes & Sporophytes
Nonvascular Plants Plants can’t grow as tall Cells must be in direct contact with moisture Materials move by diffusion cell-to-cell Sperm must swim to egg through water droplets Contains rootlike structure called rhizoids
mosses (Bryophyta) liverworts (Hepaticophyta) hornworts (Anthocerotophyta) • Nonvascular Plants
Alternation of Generations Occurs in life cycle of all plants Haplodiplontic One generation is a multicellular haploid condition and the next is a multicellular diploid condition
Archegonia (FEMALE) • Produce eggs Antheridia (MALE) • Produce sperm When water is available, sperm swim to the eggs Gametes
MAIN TYPES OF PLANTS Nonvascular Vascular Seedless Vascular Plants Moses Liverworts Hornworts Seed-bearing Plants Naked-seeded Seeded
Dominate sporophyte Specialized conducting cells Distinctive body form • Meristem • Shoots • Roots Features of Vascular Plants
Shoots -Found above ground -Have leaves attached - Photosynthetic part of plant Roots -Found below ground -Absorb water & minerals -Anchor the plant Main Parts of Vascular Plants
Also called Tracheophytes Subdivided into two groups -- Seedless vascular plantsand Seed-bearing vascular plants Vascular Plants Club Moss
club moss (Lycophyta) horsetails (Sphenophyta) whisk ferns (Psilophyta) ferns (Pterophyta) Seedless Vascular Plants
Seedless Vascular Plants Whisk ferns
