As plantas: flores
Transcript of As plantas: flores
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AS PLANTASAs floresAs flores
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A FLOR é a parte da planta que contén as células reprodutoras.
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pistiloestames
pétalos
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ovario
estigma
estames
pole
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TIPOS DE FLORES SEGUNDO A FORMA
REGULARES IRREGULARES
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TIPOS DE FLORES SEGUNDO O CÁLICE
Tépaloidea:
sépalos de cores
Dialisépala:
sépalos soltos
Gamosépala:
sépalos soldados
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TIPOS DE FLORES SEGUNDO A COROLA
Dialipétala: pétalos libres
Espida: sen corola nen cálice
Sen corolaGamopétala: pétalos soldados
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FORMAS DAS COROLAS
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COROLACRUCIFORME
Catro pétalos opostos, dous a dous
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COROLAROSÁCEA
Cinco pétalos de unlla curta
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COROLACLAVELIFORME
Pétalos anchos que se estreitan moito na base
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COROLATUBULAR
forma de tubo
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COROLAFLOSCULOSA
Tubular con cinco pétalos
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COROLAACAMPANADA
Forma de campá
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COROLAURCEOLADA
Forma de tubo abombado
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COROLAPAPILONÁCEA
Cinco pétalos que se recobren uns aos outros:
estandarte, ás e quilla.
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COROLAVIOLÁCEA
Cinco pétalos, un con esporón
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COROLAORQUIDÁCEA
Cinco pétalos, un moi modificado
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COROLALABIADA
tres pétalos soldados en forma de boca
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COROLABILABIADA
Pétalos soldados en dous grupos
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COROLAPERSONADABilabiada cos
beizos moi próximos e o
tubo repregado
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COROLAEN COROAFalsa corola situada no
interior da outra
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COROLA LILIÁCEATres pétalos e tres
sépalos de igual cor e consistencia (tépalos)
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COROLALIGULADA
Pétalos soldados a xeito de língua
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A flor máis grande: Rafflesia arnoldii: 105 cm de diámetro e 7 kg (Borneo)
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TIPOS DE FLORES SEGUNDO O SEXO
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Flores masculinas
Flores femininas
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Flor hermafrodita, fértil Flor estéril, sen órganos reprodutores
CAMELIA
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NÚMERO DE CARPELOS
- varios carpelos unidos -varios carpelos soltos
Pluricarpelar:varios carpelos
Monocarpelar: carpelo único
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Ínfero Súpero
POSICIÓN DO OVARIO
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DISPOSICIÓN DOS ESTAMES
Libres Nun feixe En varios feixes Anteras soldadas
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INFLORESCENCIAS AGRUPACIÓNS DE FLORES
espigas acio cabeza umbela cimas
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Espiga:
flores sen rabo apegadas a un eixo
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Acio:
flores con rabo apegadas a un eixo
Panícula: acio composto
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Capítulo ou cabeza: flores sen rabo apoiadas nunha superficie (disco, esfera...)
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Corimbo:
flores con rabos longos que saen dun eixo a diferentes alturas e ábrense ao mesmo nivel na parte superior.
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Umbela
grupo de flores con rabo que saen do mesmo punto
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Umbela múltiple
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Cimas
grupos ramificados de flores que aparecen na parte alta da planta.
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FLORES DE FIGUEIRAAgrúpanse no interior dun envoltorio (figo)
femininasmasculinas
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Inflorescencia máis grande: Aro xigante (Amorphophallus titanum): 2,5 m de alto. Sumatra-Indonesia
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REPRODUCIÓN DAS PLANTAS ANXIOSPERMAS
PARTE FEMININA
CARPELOOvario-óvulos
FROITO-sementes
PARTE MASCULINA
ESTAMEAntera-pole
polinización
dispersión das sementes
xerminación
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Loureiro de Madeira
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papoula
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eucalipto
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limón
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XEITOS DE POLINIZACIÓN DAS FLORES
VENTO INSECTOS, AVES, MORCEGOS…
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MILLO: flores masculinas
Polinización polo vento
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MILLO: flores femininas
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REPRODUCIÓN DAS PLANTAS XIMNOSPERMAS
PARTE FEMININA
óvulos
sementes
PARTE MASCULINA
polepolinización
dispersión das sementes
xerminación
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CONOS FEMININOS
CONOS MASCULINOS
(CONÍFERA) Piñeiro
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Piñeiro bravo
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cedro
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alcipreste
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Alcipreste portugués
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cica
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cica
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ALIMENTO alcachofas, coliflor, brécol, alcaparras...
CONDIMENTO azafrán, clavo...
MEDICIÑA macela, tila, sabugueiro...
DECORACIÓN rosa, clavel, xeranio, margarida, crisantemo, dalia, ambroíño, azalea, gardenia...
PERFUMES, ESENCIAS
rosa, xazmín, azahar, lavanda...
AGASALLO rosas, orquídeas, caraveis...
ALGÚNS USOS DAS FLORES
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alcachofa
brécol
coliflor
romanesco
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azafrán
clavo
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tilleira
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Montaxe: Adela LeiroFotos: Adela Leiro, Mon Daporta, InternetDebuxos: Mon Daporta