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Learning objective

Describe phloem transport of assimilates by translocation.

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Topic

Exchange substances official content

Subtopic

Mass transport in plants

Aqa A Level BiologyOrganisms exchange substances with their environment

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Quick explanation

Describe phloem transport of assimilates by translocation

  • This point belongs to Exchange substances official content, especially Mass transport in plants.
  • You need to be able to describe phloem transport of assimilates by translocation.
  • The key ideas to know are phloem, assimilate, and translocation.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

phloemassimilatetranslocation

Why it matters

This objective helps connect Mass transport in plants to exam-style questions, flashcards, and revision notes for Exchange substances official content.

Quick student answer

Which of the following best describes the process of translocation in phloem?

Direct answer

Translocation is the process by which organic compounds, primarily sucrose, are transported from sources (where they are produced) to sinks (where they are utilized or stored).

Key terms

  • Translocation: The movement of organic compounds, particularly sugars, from sources to sinks in plants via the phloem.
  • Phloem: A type of vascular tissue in plants responsible for the transport of nutrients and sugars produced by photosynthesis.

Common trap

Confusing phloem and xylem functions: Remember that phloem transports sugars and organic compounds, while xylem primarily transports water and minerals.

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