Transporte nas Planta

Domínio 3. Distribuição da Matéria

Capítulo 1 -Transporte Nas Plantas

Transporte nas plantas.

Distribuição de matéria nos seres vivos. Transporte nas plantas. Identificação dos sistemas de transporte existentes nas plantas vasculares. Absorção de água e de sais minerais pela raiz.

Indíce

Great Subtitle

01. Aprendizagens essenciais

02. Quote

03. Section

04. Relevant Data

05. Timeline

06. Chart + Text

07. Table + Text

08. List / Process

09. Video

10. Text + Icons

11. Audio

12. Embedded Content

13. Interactive Question

14. Conclusions

15. Closure

Aprendizagens Essenciais

• Explicar movimentos de fluidos nas plantas vasculares com base em modelos (pressão radicular; adesão-coesão-tensão; fluxo de massa), integrando aspetos funcionais e estruturais.
• Planificar e executar atividades laboratoriais/ experimentais relativas ao transporte nas plantas, problematizando, formulando hipóteses e avaliando criticamente procedimentos e resultados.

Questão central

Como ocorre o transporte de água e dos compostos orgânicos no interior das plantas?

01. Plantas vasculares e avasculares

Nas algas unicelulares

aquáticas precursoras das plantas , o transporte a nível celular estava unicamente dependente da permeabilidade seletiva da membrana

01.

A conquista do meio terrestre...

levou à diferenciação de raízes, capazes de absorver água e sais minerais do solo e de caules com folhas expostas à luz e ao dióxido de carbono atmosférico.

01. Text + image

A adaptação das plantas ao meio terrestre..

passou pela aquisição de características ou de estruturas que as impediam de perder água ou lhes permitiam um maior aproveitamento desta. As caraterísticas que permitiram um novo meio de vida às plantas foram: - Aquisição de um sistema de tecidos condutores (feixes vasculares) que lhes permitiu uma maior absorção de água de sais minerais e o seu transporte até aos locais onde eram necessários – as plantas passaram a ser plantas vasculares

03. Quote

'Conceitos

Author's Name

Plantas muito pequenas e que vivem em habitats húmidos e sombrios não necessitam de tecidos especializados para o transporte de substâncias. Por exemplo, as minúsculas folhas dos musgos (filoides), têm apenas uma camada de células. Assim, essas células fazem trocas diretas com o meio. Os compostos produzidos na fotossíntese também são trocados entre células, sem necessidade de tecidos especializados para o seu transporte. Estas plantas mais simples, sem tecidos condutores*, designam-se plantas não vasculares. * Por vezes, as plantas não vasculares têm rudimentos de tecido condutor, ou seja, tecido com células ainda pouco diferenciadas.

Plantas não vasculares

04. ESTOMAS

ESTOMAS

Os estomas são estruturalmente constituídos por: Células-guarda– controlam, mediante a sua turgidez, a abertura do orifício por onde entrarão ou sairão os gases; Ostíolo – orifício, cuja abertura é controlada pelas células-guarda ou oclusivas, o que permite a entrada e saída de gases na planta, mais tarde envolvidos em processos transmembranares

Analisa o seguinte procedimento experimental: Montaram-se fragmentos de epiderme de uma planta em dois meios diferentes: um meio hipotónico (solução de NaCl a 1g/L) e um meio hipertónico (solução de NaCl a 30g/L) Observaram-se ao microscópio os estomas das duas preparações. Os resultados estão esquematizados na figura.

04. ATIVIDADE

Investigar o funcionamento dos estomas.

Que vantagens têm as plantas na impermeabilização das folhas, permitindo as trocas apenas pelos ostíolos?

O que levará à abertura dos ostíolos quando as células têm maior volume?

O que podes concluir?

05. Discussão

O que podes concluir? !

04. Transporte de nutrientes, água e sais minerais nas plantas

04. Tecidos condutores

Esses tecidos ocorrem desde a raiz até aos órgãos mais elevados, nas plantas vasculares.

Analisa o seguinte procedimento experimental: Montaram-se fragmentos de epiderme de uma planta em dois meios diferentes: um meio hipotónico (solução de NaCl a 1g/L) e um meio hipertónico (solução de NaCl a 30g/L) Observaram-se ao microscópio os estomas das duas preparações. Os resultados estão esquematizados na figura.

04. ATIVIDADE

O xilema e o floema distribuem-se de diversas formas nos diferentes órgãos vegetais.

05. Timeline

20XX

Plan

20XX

Structure

20XX

Design

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Communicate

06. Graphic + text

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06. Graphic + text

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07. Table + text

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08. Process

01

Visual beings

We are capable of understanding images from millions of years ago, even from other cultures.

02

Narrative beings

We tell thousands and thousands of stories. ⅔ of our conversations are stories.

03

Social beings

We need to interact with each other. We learn collaboratively.

04

Digital beings

We avoid being part of the content saturation in thedigital world.

08. Processes

A great presentation...

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10. Text + icons

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11. Audio

12. Embedded Content

Social Media

Music

Map

13. Interactive question

13. Interactive question

13. Interactive question

13. Interactive question

14. Conclusions

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Pose a dramatic question; it's the essential ingredient to maintain audience attention. It's usually subtly posed at the beginning of the story to intrigue the audience and is resolved at the end.

Aquisição de estomas nas folhas, o que lhes permitiu um controle das trocas gasosas entre a planta e o meio.Aquisição de sementes que, com os seus constituintes protegem o embrião da dessecação e o nutrem. Aquisição de flor, que permitiu uma polinização cruzada.

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We better capture visual content. Visual content is associated with cognitive and psychological mechanisms. Things come in through the eyes, the first image is what counts. We associate visual contentwith emotions.

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Here you can put ahighlighted title

We better capture visual content. Visual content is associated with cognitive and psychological mechanisms. Things come in through the eyes, the first image is what counts. We associate visual contentwith emotions.

Write a great headline

Pose a dramatic question; it is the essential ingredient to maintain the audience's attention. It is usually subtly posed at the beginning of the story to intrigue the audience and is resolved at the end.

Write a great headline

Our brain is wired, from a biological standpoint, to process visual content. Almost 50% of our brain is involved in processing visual stimuli.

Here you can put aprominent title

Pose a dramatic question; it's the essential ingredient to maintain audience attention. It's usually subtly posed at the beginning of the story to intrigue the audience and is resolved at the end.

As plantas são seres multicelulares cuja complexidade resulta de um longo processo evolutivo

Write a great headline

Our brain is wired, from a biological standpoint, to process visual content. Almost 50% of our brain is involved in processing visual stimuli.

Write a great headline

Pose a dramatic question; it's the essential ingredient to maintain the audience's attention. It's usually posed subtly at the beginning of the story to intrigue the audience and is resolved at the end.

Here you can put ahighlighted title

We better grasp visual content. Visual content is associated with cognitive and psychological mechanisms. Things come in through the eyes, the first image is what counts. We associate visual contentwith emotions.

Here you can put ahighlighted title

Disciplines like Visual Thinking facilitate visually rich note-taking thanks to the use of images, graphics, infographics, and simple drawings. Go for it!

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Here you can put ahighlighted title

We better capture visual content. Visual content is associated with cognitive and psychological mechanisms. Things enter through the eyes, the first image is what counts. We associate visual contentwith emotions.

Pose a dramatic question; it is the essential ingredient to maintain audience attention. It is usually posed subtly at the beginning of the story to intrigue the audience and is resolved at the end.

Here you can put ahighlighted title

We better capture visual content. Visual content is associated with cognitive and psychological mechanisms. Things come in through the eyes, the first image is what counts. We associate visual contentwith emotions.