Summary
Translocation in plants involves the movement of food substances from leaves to other parts of the plant.
- Translocation — the process of transporting food substances in plants. Example: Movement of sugars from leaves to roots.
- Phloem — the tissue responsible for translocation in plants. Example: Phloem tubes carry dissolved sugars.
- Source — the part of the plant where substances are produced. Example: Leaves are a source of sugars.
- Sink — the part of the plant where substances are used or stored. Example: Roots are a sink for sugars.
Exam Tips
Key Definitions to Remember
- Translocation: the movement of food substances in plants.
- Phloem: tissue that transports food substances.
- Source: part of the plant where substances are produced.
- Sink: part of the plant where substances are used or stored.
Common Confusions
- Confusing phloem with xylem, which transports water.
- Thinking translocation only occurs in one direction.
Typical Exam Questions
- What is translocation in plants? The movement of food substances from leaves to other parts of the plant.
- What is the role of phloem in plants? To transport dissolved sugars and other food substances.
- What is the difference between a source and a sink in plants? A source produces substances, while a sink uses or stores them.
What Examiners Usually Test
- Understanding of how translocation works.
- Differences between phloem and xylem.
- Identification of sources and sinks in plants.
