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Chemical Coordination in Plants

ICSE · Class 10 · Biology

Step-by-step guide to study Chemical Coordination in Plants in ICSE Class 10 Biology. Topics to cover, practice strategy, and time allocation.

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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Study Plan

1
Day 1–2

Learn the Theory

Read the textbook chapter carefully. Note down definitions, formulas, and key concepts.

2
Day 3

Practice Problems

Solve textbook exercises and additional practice questions. There are 45 questions available for this chapter.

3
Day 4

Revise & Test

Revise key formulas and concepts without looking at notes. Take a practice quiz to test your understanding. Mark weak areas for re-revision.

4
Day 7

Spaced Revision

Revisit Chemical Coordination in Plants after a week. Use flashcards for quick recall. Solve previous year questions from this chapter.

What to Focus On

  • PGRs are also called plant hormones or phytohormones
  • They are organic substances produced in trace amounts
  • They are transported mainly through phloem

  • Auxins were the first plant hormones discovered
  • Most potent natural auxin is IAA (Indole Acetic Acid)
  • Synthetic auxins: IBA, NAA, 2,4-D

  • More than 100 types of gibberellic acids are known
  • First discovered from Bakanae (foolish seedling) disease of rice
  • Produced in young leaves, plastids of immature seeds, and roots

Common Mistakes to Avoid

Auxin always promotes growth — it can never inhibit growth

Plant hormones are produced only at one specific place and only work there

Ethylene and Abscisic Acid are not real hormones because they inhibit growth, and hormones should promote activity

Memory Tips

Types of Plant Growth Regulators — Promoters and Inhibitors

Auxin — produced at growing tips, causes elongation

IAA is the most potent natural auxin

Synthetic auxins: IBA, NAA, 2,4-D

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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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