Kingdom Plantae Biology 11. Kingdom Plantae Multi-cellular Multi-cellular Autotrophic Autotrophic...
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Transcript of Kingdom Plantae Biology 11. Kingdom Plantae Multi-cellular Multi-cellular Autotrophic Autotrophic...
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Kingdom Kingdom PlantaePlantae
Biology 11Biology 11
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Kingdom PlantaeKingdom Plantae Multi-cellularMulti-cellular AutotrophicAutotrophic EukaryoticEukaryotic Cell walls made of celluloseCell walls made of cellulose Store food in the form of starchStore food in the form of starch
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Have chloroplasts containing Have chloroplasts containing chlorophyllchlorophyll
Most are terrestrial, some are Most are terrestrial, some are aquaticaquatic
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Prepare a table to compare Nonvascular and Vascular
Non-vascular VascularVessels (xylem and phloem)
Leaves, roots, stems
Examples
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NonvasculNonvascularar
No vesselsNo vesselsNo rootsNo rootsNo stemsNo stemsNo leavesNo leavesEx: Mosses and Ex: Mosses and
liverwortsliverworts
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VasculaVascularr Have vessels to Have vessels to
transport food transport food and waterand water
They have roots, They have roots, stems and stems and leavesleaves
Ex: grass, corn, Ex: grass, corn, trees, flowers, trees, flowers, bushesbushes
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Xylem: transports waterXylem: transports waterPhloem: transports food & nutrientsPhloem: transports food & nutrients
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Vascular Plants can be sub-divided into Seedless vs Seed
Plants
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Seedless plants (Seedless plants (e.g.e.g., ferns) have a , ferns) have a vascular system but reproduce using vascular system but reproduce using spores.spores.
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Seed Plants can be further subdivided into
Gymnosperms and Angiosperms
Gymnosperms AngiospermsType of protection for seed
Type of leaves
Growing season
Type of pollination
Examples
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Seed PlantsSeed Plants GymnospermsGymnosperms Cone-bearing plantsCone-bearing plants ““naked seeds” = seeds naked seeds” = seeds
that are not enclosed.that are not enclosed. needle-like leaves needle-like leaves usually stay green year usually stay green year
round round wind pollinated wind pollinated Examples: pine trees & Examples: pine trees &
other evergreens other evergreens
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AngiospermsAngiosperms Flowering plants Flowering plants Seeds are enclosed, usually in a Seeds are enclosed, usually in a
fruit fruit Have finite growing seasons Have finite growing seasons Most are pollinated by birds & Most are pollinated by birds &
beesbees The most successful group of The most successful group of
plantsplants Examples: grasses, tulips, oaksExamples: grasses, tulips, oaks Divided into two main groups: Divided into two main groups:
Monocots & Monocots & Dicots Dicots
Seed PlantsSeed Plants
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Angiosperms can be further subdivided into Monocots and
DicotsMonocot Dicot
Number of Cotyledons
Type of leaf veins
Type of root
Arrangement of vessels
Examples
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MonocotsMonocots 1 seed leaf (cotyledon) 1 seed leaf (cotyledon) parallel veins on parallel veins on
leaves leaves 3 part symmetry for 3 part symmetry for
flowers flowers fibrous roots fibrous roots Vascular tissue Vascular tissue
scatteredscattered Example: lilies, onions, Example: lilies, onions,
corn, grasses, wheatcorn, grasses, wheat
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DicotsDicots 2 seed leaves 2 seed leaves
(cotyledons) (cotyledons) net veins on leaves net veins on leaves flowers have 4-5 parts flowers have 4-5 parts taproots taproots Vascular tissue Vascular tissue
arranged in a ringarranged in a ring Examples: trees and Examples: trees and
ornamental flowersornamental flowers
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Success of Success of AngiospermsAngiosperms
Transport gametes over great Transport gametes over great distances.distances.
Efficient dispersal via fruit.Efficient dispersal via fruit. Tough, water resistant leaves for Tough, water resistant leaves for
survival in hostile environments.survival in hostile environments.
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PollinationPollination
Co-evolution Co-evolution between flowers between flowers and pollinators.and pollinators.
Birds are attracted Birds are attracted to red flowers.to red flowers.
Bees can see Bees can see colors that humans colors that humans cannot.cannot.
Moth-pollinated Moth-pollinated flowers are white flowers are white and bloom at night.and bloom at night.
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Many insects are attracted to Many insects are attracted to odors. One species smells like odors. One species smells like rotting meat and is pollinated rotting meat and is pollinated by flies.by flies.
Flowers are often shaped so Flowers are often shaped so that non-pollinators cannot that non-pollinators cannot reach nectar or pollen. For reach nectar or pollen. For example, hummingbird-example, hummingbird-pollinated flowers are long, and pollinated flowers are long, and shaped like the bill of a shaped like the bill of a hummingbird.hummingbird.
Wind-pollinated flowers are Wind-pollinated flowers are small, have no petals and little small, have no petals and little color and do not produce color and do not produce nectar.nectar.
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Problems living in a terrestrial Problems living in a terrestrial ecosystemecosystem
Support - in water, the plant is held Support - in water, the plant is held up. On land, a support system is up. On land, a support system is required.required.
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Getting Water and NutrientsGetting Water and Nutrients Aquatic plants are surrounded by water and Aquatic plants are surrounded by water and
nutrients so most cells can just absorb them nutrients so most cells can just absorb them the environment. Terrestrial plants require a the environment. Terrestrial plants require a system for collecting and transporting water.system for collecting and transporting water.
Plants developed root systems that can Plants developed root systems that can collect and transport water. Some plants collect and transport water. Some plants have shallow roots which spread out to have shallow roots which spread out to collect water.collect water.
Water carrying minerals from the roots can Water carrying minerals from the roots can travel to all parts of the plant and food made travel to all parts of the plant and food made in the leaves can travel to non-in the leaves can travel to non-photosynthetic parts of the plant.photosynthetic parts of the plant.
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Drying OutDrying Out Leaves are covered by Leaves are covered by
a waterproof outer a waterproof outer layer called the layer called the cuticle.cuticle.
Openings in the leaves Openings in the leaves called stomata allow called stomata allow passage of gases for passage of gases for photosynthesis but photosynthesis but can be closed when it can be closed when it is too warm.is too warm.
Gymnosperms have Gymnosperms have very narrow leaves to very narrow leaves to minimize water loss.minimize water loss.
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Spreading GametesSpreading Gametes
SporesSpores – tiny reproductive cells are – tiny reproductive cells are carried long distance by the windcarried long distance by the wind
SeedsSeeds: : – The embryo inside the seed is surrounded The embryo inside the seed is surrounded
by a tough, drought-resistant, protective by a tough, drought-resistant, protective seed coat. Food packaged in the seed seed coat. Food packaged in the seed provides energy for the young plant until it provides energy for the young plant until it can grow above the soil and begin can grow above the soil and begin photosynthesizing.photosynthesizing.
– Adaptations of seeds help in their dispersal. Adaptations of seeds help in their dispersal. Some seeds are carried by wind, stick to Some seeds are carried by wind, stick to the fur of animals or are eaten.the fur of animals or are eaten.
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Today’s Work Today’s Work
1.1. Complete the Monocot/Dicot Complete the Monocot/Dicot colouring with the large lily on the colouring with the large lily on the back back
YOU SHOULD BE VERY FAMILIAR WITH YOU SHOULD BE VERY FAMILIAR WITH THIS COLOURING FOR THE UNIT THIS COLOURING FOR THE UNIT TEST!TEST!