Biology SL
Biology SL
4
Chapters
553
Notes
Theme A - Unity & Diversity
Theme A - Unity & Diversity
Theme B - Form & Function
Theme B - Form & Function
Theme C - Interaction &  Interdependence
Theme C - Interaction & Interdependence
Theme D - Continuity & Change
Theme D - Continuity & Change
IB Resources
Theme B - Form & Function
Biology SL
Biology SL

Theme B - Form & Function

Unlocking Plant Vitality Phloem’s Role in Sap Translocation

Word Count Emoji
518 words
Reading Time Emoji
3 mins read
Updated at Emoji
Last edited on 14th Jun 2024

Table of content

Intro🎤

Ever wonder how a plant's sugary goodness gets around? Just like how you might share candy with your friends, plants also have a cool way of sharing! Let's dive into the world of phloem and see what's happening.

Key terms 📚

  • Phloem - The plant's superhighway for sugary treats!
  • Sources - Where the sugary snacks (carbon compounds) are made or stored. E.g. Leaves 🍃
  • Sinks - Where these sugars are used or stored. E.g. Roots 🥕
  • Translocation - The act of moving the sugars around.

The scoop on phloem 🍦

  • Sieve Tubes - Think of these as tunnels or pipes. These tubes are made from cells that join together, with big holes (sieve plates) between them. The cool part? Most of their insides dissolve, leaving just a sugary liquid called 'phloem sap'.

  • Are sieve tubes still cells? 🤔 - Even though they lose a lot of their insides, they're still alive! They have membranes and use energy (ATP). But, they're often called 'sieve tube elements' instead of cells.

  • Companion Cells - Sieve tubes have BFFs named 'companion cells'. Sieve tubes borrow energy from them. These buddies are full of energy factories called mitochondria. They're connected by little bridges called plasmodesmata which lets ATP and sugar pass between them. And guess what? These bridges are BIGGER than others in the plant.

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IB Resources
Theme B - Form & Function
Biology SL
Biology SL

Theme B - Form & Function

Unlocking Plant Vitality Phloem’s Role in Sap Translocation

Word Count Emoji
518 words
Reading Time Emoji
3 mins read
Updated at Emoji
Last edited on 14th Jun 2024

Table of content

Intro🎤

Ever wonder how a plant's sugary goodness gets around? Just like how you might share candy with your friends, plants also have a cool way of sharing! Let's dive into the world of phloem and see what's happening.

Key terms 📚

  • Phloem - The plant's superhighway for sugary treats!
  • Sources - Where the sugary snacks (carbon compounds) are made or stored. E.g. Leaves 🍃
  • Sinks - Where these sugars are used or stored. E.g. Roots 🥕
  • Translocation - The act of moving the sugars around.

The scoop on phloem 🍦

  • Sieve Tubes - Think of these as tunnels or pipes. These tubes are made from cells that join together, with big holes (sieve plates) between them. The cool part? Most of their insides dissolve, leaving just a sugary liquid called 'phloem sap'.

  • Are sieve tubes still cells? 🤔 - Even though they lose a lot of their insides, they're still alive! They have membranes and use energy (ATP). But, they're often called 'sieve tube elements' instead of cells.

  • Companion Cells - Sieve tubes have BFFs named 'companion cells'. Sieve tubes borrow energy from them. These buddies are full of energy factories called mitochondria. They're connected by little bridges called plasmodesmata which lets ATP and sugar pass between them. And guess what? These bridges are BIGGER than others in the plant.

Unlock the Full Content! File Is Locked Emoji

Dive deeper and gain exclusive access to premium files of Biology SL. Subscribe now and get closer to that 45 🌟