Learning objective
Explain how unequal distribution of auxin causes unequal growth in shoots and roots.
Read the explanation, check the common trap, then practise with flashcards and questions.
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Topic
Plant hormones (biology only)
Subtopic
Control and coordination
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Quick explanation
Explain how unequal distribution of auxin causes unequal growth in shoots and roots
- This point belongs to Plant hormones (biology only), especially Control and coordination.
- You need to be able to explain how unequal distribution of auxin causes unequal growth in shoots and roots.
- The key ideas to know are roots, shoots, and auxin.
- Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.
Key concepts
Why it matters
This objective helps connect Control and coordination to exam-style questions, flashcards, and revision notes for Plant hormones (biology only).
Quick student answer
How do you explain unequal distribution of auxin causes unequal growth in shoots and roots?
Direct answer
In Biology, this page helps you answer questions about unequal distribution of auxin causes unequal growth in shoots and roots within Plant hormones (biology only). Focus on the key process, correct scientific terms, and how the idea links to exam-style questions. Key terms to check are auxin and unequal growth.
Key terms
- auxin: A plant hormone that regulates growth by promoting cell elongation, particularly in shoots and roots.
- unequal growth: The differential growth of plant parts caused by the uneven distribution of auxin, leading to directional growth responses.
Common trap
Misunderstanding Auxin Distribution: Clarify that auxin is distributed unevenly in response to light and gravity, causing differential growth rates that result in bending towards light (phototropism) or away from gravity (gravitropism).
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Revision notestopic notes
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Open revision notesRelated learning objectives
- Describe plant hormones as chemicals that coordinate and control plant growth and responses.
Control and coordination
- Explain that plants respond to light and gravity using unequal distributions of plant hormones.
Control and coordination
- Describe phototropism as a plant growth response to light.
Control and coordination
- Describe gravitropism, or geotropism, as a plant growth response to gravity.
Control and coordination
- Explain (HT only) that gibberellins are important in initiating seed germination.
Control and coordination