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Chemical Coordination in Plants

ICSE · Class 10 · Biology

Quick revision notes for Chemical Coordination in Plants — ICSE Class 10 Biology. Key concepts, formulas, and definitions for last-minute revision.

45 questions20 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 (Phytohormones) - Overview

  • Plant hormones are organic substances produced in one part and act in another part of the plant
  • They are transported mainly through phloem tissue
  • Two main categories: Growth Promoters and Growth Inhibitors
2

Auxins - The Growth Hormone

  • First discovered plant hormone
  • Produced in growing tips of stem and root
  • IAA (Indole Acetic Acid) is the most abundant natural auxin
3

Gibberellins - The Elongation Hormone

  • More than 100 types of gibberellic acids known
  • Produced in young leaves, plastids of immature seeds, and roots
  • Cause elongation of internodes
4

Cytokinins - The Division Hormone

  • Produced in meristems (actively dividing tissues)
  • Promote cell division and enlargement
  • Delay senescence (aging)

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Full Notes

Key Concepts

These are organic substances producedThe first discovered plant hormonesOver 100 types knownProduced in meristemsA gaseous plant hormone that promotes

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 Auxin Effect: Concentration vs Growth Response in Root and Shoot, Plant Growth Regulators — Complete Overview, Plant Growth Regulators — Complete Classification. These are the concepts ICSE Class 10 examiners draw on most — study them first, then practise related questions.
How to score full marks in Chemical Coordination in Plants — ICSE Class 10 Biology?
Understand the core concepts first, then work through the 45 practice questions available for this chapter. Revise formulas and 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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