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6.3 Plant hormones

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Question 29
H

A grower tests gibberellin on flowers. All flowers are bagged before opening to prevent pollination. Conditions are otherwise identical.

Table

TreatmentFlowers testedFruits formedFruits containing seeds
No gibberellin5020
Gibberellin50360

Which conclusion is supported?

[1]
A

gibberellin increased both fruit formation and the number containing seeds

B

gibberellin reduced both fruit formation and the number containing seeds

C

gibberellin increased fruit formation without increasing seed formation

D

gibberellin increased seed formation without increasing fruit formation

Markscheme

6.3 Plant hormones Questions

  1. GCSE
  2. /Biology
  3. /6.3 Plant hormones

46 exam-style questions on Edexcel GCSE Biology 6.3 Plant hormones, covering 6.3.1 Plant hormones and tropisms and 6.3.2 Commercial uses of plant hormones. Each one has a worked solution and a mark scheme showing where the marks go.

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