Kingdom Plantae Seed Plants Mr. Skirbst Life Science Topic 15.
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Transcript of Kingdom Plantae Seed Plants Mr. Skirbst Life Science Topic 15.
![Page 1: Kingdom Plantae Seed Plants Mr. Skirbst Life Science Topic 15.](https://reader038.fdocuments.net/reader038/viewer/2022102603/551c36005503467b488b45ac/html5/thumbnails/1.jpg)
Kingdom PlantaeSeed Plants
Mr. SkirbstLife Science
Topic 15
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Seed Plants
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Seed Plants- Do not require standing water
to reproduce
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Seed Plants- Do not require standing water
to reproduce- Encase young plants to protect
& feed
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Seed StructureConsists of:1- seed coat
2- young plant(embryo)
3- stored food(cotyledon)
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CotyledonMonocot – one cotyledon
Dicot – two cotyledons
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Reproductive Structuresovule -
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Reproductive Structuresovule – female structure
containing egg cells
pollen -
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Reproductive Structuresovule – female structure
containing egg cells
pollen – male structure containing sperm cells
(often with spikes on surface)
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Types of Plantsgymnosperms -
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Types of Plantsgymnosperms – “naked” seeds
(not covered by ovary)
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Types of Plantsgymnosperms – “naked” seeds
(not covered by ovary)cones – location of reproductive structure(ex. Pine trees)
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Types of Plantsangiosperms– seed contained in
“vessel”(seeds covered by ovary)
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Types of Plantsangiosperms– seed contained in
“vessel”(seeds covered by ovary)flowers – location of reproductive structures(a.k.a. flowering plants)
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Gymnosperms4 phyla:
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Gymnosperms4 phyla:
1- cycads – tropical, palmlike
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Gymnosperms4 phyla:
1- cycads – tropical, palmlike2- ginkoes – ornamental (seeds stink!)
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Gymnosperms4 phyla:
1- cycads – tropical, palmlike2- ginkoes – ornamental3- conifers – cone-bearing, evergreen (like pine)
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Gymnosperms4 phyla:
1- cycads – tropical, palmlike2- ginkoes – ornamental3- conifers – cone-bearing4- gnetophytes – blended characteristics of gymno & angiosperms
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Angiosperms- Largest plant group in the
world
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Angiosperms- Largest plant group in the
world- Also called “flowering” plants
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Flowers- Contain the reproductive
organs
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Flowers- Stamen (male)
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Flowers- Pistil (female)
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Tropism- A plant’s response to a stimulus
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Tropism- A plant’s response to a stimulus
Response – a reaction to a stimulus
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Tropism- A plant’s response to a stimulus
Response – a reaction to a stimulus
Stimulus – something causing a reaction
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2 Types of Tropism1- Phototropism -
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2 Types of Tropism1- Phototropism – a plant’s
response to light
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2 Types of Tropism2- Gravitropism -
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2 Types of Tropism2- Gravitropism – a plant’s
response to gravity
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TropismPositive tropism – response
toward a stimulus
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TropismPositive tropism – response
toward a stimulusNegative tropism – response
away from a stimulus
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