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11 Apr 2023
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Transport in Plants: OCR A-Level Biology Notes and Exam Questions PDF
Erin Gauntlett
@eringauntlett.x
Page 2: Xylem Structure and Water Transport
This page details the intricate mechanisms of water transport through xylem vessels and their structural adaptations for efficient water movement.
Definition: Xylem tissue consists of dead cells forming continuous tubes strengthened by lignin deposits.
Highlight: Water transport occurs through two main pathways: the symplast pathway and the apoplast pathway .
Vocabulary: The Casparian strip is a waxy barrier in the endodermis that forces water through the symplast pathway.
Example: Water movement relies on cohesion-tension theory, where water molecules form continuous columns from roots to leaves.
Page 3: Transpiration Process
The final page focuses on transpiration, the process driving water movement through plants.
Definition: Transpiration is the loss of water vapor from plant surfaces, measured in g/cm²/hr.
Highlight: The transpiration stream is powered by water potential gradients and molecular forces.
Vocabulary: Cohesion refers to the attraction between water molecules, while adhesion describes water's attraction to xylem vessel walls.
Note: Since only three pages were provided, I've summarized the available content. Let me know if you need summaries for additional pages when they become available.
Page 3: Transpiration Process and Influencing Factors
The page examines transpiration and the various factors affecting its rate in plants.
Definition: Transpiration is the loss of water vapor from plant surfaces, measured in g/cm²/hr.
Highlight: Multiple environmental and structural factors influence transpiration rates, including light intensity, temperature, and humidity.
Example: Increased leaf surface area leads to higher transpiration rates due to more area for water evaporation.
Vocabulary: Relative humidity - the amount of water vapor present in air compared to the maximum possible at that temperature.
Page 4: Translocation Mechanism
This section details the complex process of sugar transport through phloem tissue.
Definition: Translocation involves active transport and co-transport mechanisms for moving sugars through phloem tissue.
Highlight: The process requires ATP energy and involves multiple transport proteins.
Vocabulary: Plasmodesmata - cytoplasmic connections between plant cells that allow substance movement.
Example: Sucrose moves via facilitated diffusion or active transport depending on concentration gradients.
Page 1: Xylem and Phloem Location and Phloem Adaptations
The first page explores the strategic positioning and specialized adaptations of xylem and phloem tissues within different plant parts. These vascular tissues form an intricate transport network throughout the plant body.
Definition: The vascular system consists of xylem and phloem tissues that transport substances throughout the plant.
Example: In roots, xylem and phloem are centrally located for soil penetration support, while in stems they're positioned near the outside to provide scaffolding against bending.
Highlight: Phloem tissue contains specialized cells called sieve tube elements that form continuous tubes for sugar transport, supported by companion cells that provide essential living functions.
Vocabulary: Sieve plates are perforated end walls between sieve tube elements that allow solute movement.
Can't find what you're looking for? Explore other subjects.
Students love us — and so will you.
4.9/5
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Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
Transport in Plants: OCR A-Level Biology Notes and Exam Questions PDF
Erin Gauntlett
@eringauntlett.x
Transport Systems in Plants - A comprehensive guide covering the structure, function, and mechanisms of xylem and phloem tissues, including transpiration and translocation processes.
• Xylem and phloem form the plant's vascular system, with specialized adaptations for efficient transport
• ... Show more
Page 2: Xylem Structure and Water Transport
This page details the intricate mechanisms of water transport through xylem vessels and their structural adaptations for efficient water movement.
Definition: Xylem tissue consists of dead cells forming continuous tubes strengthened by lignin deposits.
Highlight: Water transport occurs through two main pathways: the symplast pathway and the apoplast pathway .
Vocabulary: The Casparian strip is a waxy barrier in the endodermis that forces water through the symplast pathway.
Example: Water movement relies on cohesion-tension theory, where water molecules form continuous columns from roots to leaves.
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Access to all documents
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Page 3: Transpiration Process
The final page focuses on transpiration, the process driving water movement through plants.
Definition: Transpiration is the loss of water vapor from plant surfaces, measured in g/cm²/hr.
Highlight: The transpiration stream is powered by water potential gradients and molecular forces.
Vocabulary: Cohesion refers to the attraction between water molecules, while adhesion describes water's attraction to xylem vessel walls.
Note: Since only three pages were provided, I've summarized the available content. Let me know if you need summaries for additional pages when they become available.
Sign up to see the contentIt's free!
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Improve your grades
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Page 3: Transpiration Process and Influencing Factors
The page examines transpiration and the various factors affecting its rate in plants.
Definition: Transpiration is the loss of water vapor from plant surfaces, measured in g/cm²/hr.
Highlight: Multiple environmental and structural factors influence transpiration rates, including light intensity, temperature, and humidity.
Example: Increased leaf surface area leads to higher transpiration rates due to more area for water evaporation.
Vocabulary: Relative humidity - the amount of water vapor present in air compared to the maximum possible at that temperature.
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Page 4: Translocation Mechanism
This section details the complex process of sugar transport through phloem tissue.
Definition: Translocation involves active transport and co-transport mechanisms for moving sugars through phloem tissue.
Highlight: The process requires ATP energy and involves multiple transport proteins.
Vocabulary: Plasmodesmata - cytoplasmic connections between plant cells that allow substance movement.
Example: Sucrose moves via facilitated diffusion or active transport depending on concentration gradients.
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
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Page 1: Xylem and Phloem Location and Phloem Adaptations
The first page explores the strategic positioning and specialized adaptations of xylem and phloem tissues within different plant parts. These vascular tissues form an intricate transport network throughout the plant body.
Definition: The vascular system consists of xylem and phloem tissues that transport substances throughout the plant.
Example: In roots, xylem and phloem are centrally located for soil penetration support, while in stems they're positioned near the outside to provide scaffolding against bending.
Highlight: Phloem tissue contains specialized cells called sieve tube elements that form continuous tubes for sugar transport, supported by companion cells that provide essential living functions.
Vocabulary: Sieve plates are perforated end walls between sieve tube elements that allow solute movement.
Can't find what you're looking for? Explore other subjects.
Students love us — and so will you.
4.9/5
App Store
4.8/5
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user