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Chapter 7 of 16
Revision Notes

Chemical Coordination in Plants — Revision Notes

ICSE · Class 10 · Biology

Chemical Coordination in Plants revision notes for ICSE Class 10 Biology: 4 topics in quick points. Part of the ICSE Class 10 Biology syllabus.

42 questions35 flashcards5 concepts

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An infographic classifying plant growth regulators into promoters (Auxins, Gibberellins, Cytokinins) and inhibitors (Abscisic Acid, Ethylene), with their general functions.
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Key Topics to Revise

1

Plant Growth Regulators

  • Plant growth regulators are also called plant hormones or phytohormones.
  • They are organic substances produced in one part of the plant body and act in another part.
  • They are mainly transported through phloem.
2

Auxins

  • Auxins were the first plant hormones to be discovered.
  • Auxins are produced by growing tips of stem and root.
  • Indole acetic acid is the most abundant and powerful naturally occurring auxin.
3

Gibberellins

  • More than 100 types of gibberellic acids are known.
  • Gibberellins are produced in young leaves, plastids of immature seeds, or even roots.
  • Gibberellins cause elongation of internodes.
4

Cytokinins

  • Cytokinin is produced in meristems.
  • It promotes cell division and cell enlargement.
  • It delays senescence, which means ageing of plants.

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Full Notes

Key Concepts

Plant growth regulators are organic substancesAuxins were the first plant hormonesAuxin causes stem elongationGibberellins are growth promotersCytokinins are growth promoters produced

Frequently Asked Questions

What are the important topics in Chemical Coordination in Plants for ICSE Class 10 Biology?
Key topics in Chemical Coordination in Plants include Plant Growth Regulators, Auxins, Gibberellins, Cytokinins. Study these first, then practise questions on each for the ICSE Class 10 board exam.
How should I revise Chemical Coordination in Plants for the ICSE Class 10 board exam?
Learn the core ideas first, then work through the 42 practice questions on Chemical Coordination in Plants. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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