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Learning objective

Explain gravitropism as a plant response where certain parts grow towards or away from gravitational pull.

Read the explanation, check the common trap, then practise with flashcards and questions.

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  • Read the explanation.
  • Check key terms.
  • Practise with linked questions.
Cambridge IGCSE BiologyCoordination and responseCore content

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Quick explanation

Explain gravitropism as a plant response where certain parts grow towards or away from gravitational pull

  • This point belongs to Tropic responses, especially Tropic responses outcomes.
  • You need to be able to explain gravitropism as a plant response where certain parts grow towards or away from gravitational pull.
  • The key ideas to know are Describe.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

Describe

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This objective helps connect Tropic responses outcomes to exam-style questions, flashcards, and revision notes for Tropic responses.

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Paper 3 structured question: Tropic responses

Paper 3Theory (Core)2 marks

Description

Observation of Seedling Growth

The seedling is placed in a pot tilted at an angle. Despite the tilt, roots grow downwards into the soil, and shoots grow upwards towards the light.

  1. a

    Describe how gravitropism causes the roots to grow downwards in the tilted pot.

    Aim for approximately 2 distinct marking points.

    [2]
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