prof. vasco acesse: vascobio.net morfologia vegetal
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Prof. Vasco Acesse: vascobio.net
Morfologia vegetal
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Germinação epígea e hipógea
A semente sai do solo - epígea A semente permanece no solo - hipógea
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Raiz fasciculada
Típica de monocotiledôneas
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Zonas da raiz axial ou pivotante
1 – zona suberosa ou de ramificação
2 – zona pilífera
3 – zona de alongamento
4 – zona meristemática
5 - coifa
Raiz típica das eudicotiledôneas, das dicotiledôneas basais e das gimnospermas
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Raiz axial ou pivotante
As raízes secundárias apresentam as mesmas zonas que a raiz principal
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Corte interno da raiz1 - Pelo absorvente
2 - epiderme
3 – córtex ou casca
4 - endoderme
5 - periciclo
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Vasos condutores de seivas
lignina
Seiva bruta
xilema floema
célula compa-nheira
Placa crivada
Seiva elaborada
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Corte de vaso condutor – região interna
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Meristemas e tecidos permanentes
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Meristemas primários
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Anatomia interna do caule
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Folha completa
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Anatomia interna da folha
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Anexos epidérmicos
Acúleos – anexos epidérmicos
Espinhos – modificações de caules ou folhas
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Estômatos – células guardas e ostíolos ou estomas em destaque
Pelos, tricomas e escamas
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Tipos de raízes
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Tipos de raízes
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Tipos de caule
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Tipos de caule
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Tipos de caule
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Tipos de frutos1. Carnosos• Drupa
abacate
• Bagalaranja
2. Secos• Deiscentes
vagem
• IndeiscentesCariopse ou grão
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Partes do fruto
PERICARPO = EPICARPO + MESOCARPO + ENDOCARPO
PERICARPO E SEMENTE
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Pseudofrutos
Maçã – receptáculo floral
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Pseudofrutos
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Flor de morango
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Pseudofruto agregado ou composto
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Flor (inflorescência) de abacaxi
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Pseudofruto – múltiplo ou infrutescência
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Constituição da semente