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Kingdom Plantae. What Is a Plant? Multicellular eukaryotes that are photosynthetic autotrophs Cell walls made of cellulose Store surplus carbohydrates.

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Presentation on theme: "Kingdom Plantae. What Is a Plant? Multicellular eukaryotes that are photosynthetic autotrophs Cell walls made of cellulose Store surplus carbohydrates."— Presentation transcript:

1 Kingdom Plantae

2 What Is a Plant? Multicellular eukaryotes that are photosynthetic autotrophs Cell walls made of cellulose Store surplus carbohydrates as starch Mostly terrestrial

3 Obstacles Plants Overcome Absorb Minerals Conserve Water –Cuticle –StomataStomata –Guard Cells Reproduce on Land

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5 A Vascular System Enables Plants to Thrive on Land Most plants need a “plumbing” system to transport water, minerals and nutrients. This system is known as the VASCULAR SYSTEM.

6 Divisions of Living Plants Are Divided into 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

7 Alternation Of Generations Occurs in life cycle of all plants Occurs in life cycle of all plants One generation is a multicellular haploid condition and the next is a multicellular diploid condition One generation is a multicellular haploid condition and the next is a multicellular diploid condition

8 Gametes Archegonia Archegonia –Produce eggs Antheridia Antheridia –Produce sperm When water is available, sperm swim to the eggs When water is available, sperm swim to the eggs

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10 Features of Vascular Plants Dominate sporophyte Dominate sporophyte Specialized conducting cells Specialized conducting cells Distinctive body form Distinctive body form –Meristem ShootsShoots RootsRoots

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12 Life Cycle of a Fern

13 Evolution of the Seed There are 5 phyla of living seed plants. Four of these phyla are collectively known as GYMNOSPERM. The other phyla is ANGIOSPERMS.

14 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.

15 Pollination Wind Insects animals


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