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Plant  Diversity Copy into your colored Notes Foldable Plant  Diversity Copy into your colored Notes Foldable

Plant Diversity Copy into your colored Notes Foldable - PowerPoint Presentation

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Uploaded On 2018-12-16

Plant Diversity Copy into your colored Notes Foldable - PPT Presentation

Plant Characteristics and Adaptions PLANT CHARACTERISTICS Multicellular eukaryotes Photosynthetic autotrophs Nonmotile fixed to one spot Cell walls made of cellulose Responds ID: 742200

vascular plant fruit water plant vascular water fruit seeds plants roots amp tracheophytes pollen tissue cone phloem stems gymnosperms

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Slide1

Plant Diversity

Copy into your colored Notes FoldableSlide2

Plant Characteristics and Adaptions Slide3

PLANT CHARACTERISTICS

Multicellular eukaryotes

Photosynthetic

autotrophs

Non-motile

(fixed to one spot)Cell walls made of celluloseResponds to environment and grows through the use of hormonesSlide4

Plants are classified based on whether or not they have

Vascular System (transport)Seeds Flowers (enclosed seeds)Slide5

Early Plants

Came from the waterFirst plants evolved from multicellular green algaeSlide6

Some Adaptations (solutions)

- Parts extending into both air and soilDevelop a vascular system to transport resources in plant

Have a protective outer layer –

cuticle

(waxy) keeps from drying out

Specialized structures for reproduction (

spores & seeds)Slide7

Plant Life CycleSlide8

Plant Life Cycle- Alternation of Generations

diploid phase

haploid phase

(produce sperm) (produce egg) Slide9

Bryophytes (Nonvascular plants)Slide10

Bryophytes-nonvascular

Most primitive plants

Found in

moist, shady areas

NO

vascular (transport) systemSmall size due to no vascular tissue No true roots, stems, or leavesNeeds water for reproduction.Reproduces using

spores

, (a water-proof single cell that can grow into a new organism)

Most common example:

Mosses, liverworts, hornwortsSlide11

Bryophytes

Mosses

liverworts

hornwortsSlide12

Tracheophytes and Vascular TissueSlide13

Tracheophytes

-Vascular Plants-Contains two types of specialized vascular tissues for transport within the plant: xylem and phloem

Allowed plants to become tall.

Has specialized organs:

roots, stems, and leaves.

Divided into 2 groups:

seedless vs. seedsSlide14

Vascular tissue

Conducts water & nutrients throughout the plant.Moves fluids through plant body even against gravity

Xylem

: transports water and minerals from roots to every part of plant (zip up the xylem)

Phloem

: transports nutrients & carbohydrates produced by photosynthesis (phloem= food)Slide15

Plant parts…

Roots- absorb water & mineralsLeaves- photosynthetic organs that contain vascular tissue

Veins (vascular tissue)

- xylem & phloem

Stems

Support structure

connects roots & leaves carrying waterSlide16

Ferns (Seedless Tracheophytes)Slide17

Ferns and relatives

Seedless vascular plantHave true roots, stems, and large leaves (fronds)Examples: Ferns, Club Mosses, HorsetailsReproduce using spores; still need waterSlide18

Gymnosperms (Seeded Cone Tracheophytes

)Slide19

Gymnosperms (Naked Seed)

ExamplesCycad (Sago palm) GinkgoConifer

(pine)

Sago Palm

Ginkgo

GinkgoSlide20

Gymnosperms (Naked Seed)

Adaptations –reproduce water freeTransfer of sperm by pollination Protection of embryos in seedsCones and pollenSeeds can remain dormant for yearsSlide21

Gymnosperms

Most common are ConifersConifers have leaves called needles or

scales

Reduce water loss and prevents freezing

Sequoia

Juniper

PineSlide22

Conifer Reproduction

Male cones produce pollen and the female cone produces eggs and

seeds

.

Pollen

is inefficiently transferred by the wind.

Once mature, the scales on the female cone dry out and open scattering the seeds by the wind.

Pollen

Pollen Cone

Seed ConeSlide23

Angiosperms (Seeded flowering tracheophytes

)Slide24

Angiosperms- Enclosed seeds

Flowers are reproductive organsEncourage direct and efficient pollen transferFruit: pollinated ovariesDiversity: Monocots and dicotsWoody and Herbacious stemsTrees vs. sunflowersAnnuals, Biennials, and PerennialsSlide25

fibrous roots taprootSlide26

Fruit can aid in dispersal of seed to reduce competition with parent plant.

Winged fruit

gliding

(maple fruit)

Floating fruit

– floats (coconut)Fleshy fruit - survive the digestive system of animals that eat the fruit (apple)Spiny fruit-

Velcro like projections attach to

animal fur

(cockleburs)

Maple seeds: Winged fruit

Burdock: Spiny fruit