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3.2 Coordination and control – the endocrine system

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Question 1
F

A student investigates how shoots respond to light.

  • She grows four groups of 10 seedlings, A, B, C and D.
  • She treats the tip of each shoot in a different way.
  • She then puts all the seedlings in a box with light coming from one side only.

The Figure shows one seedling from each group after 3 days.

Figure

image

a.

Name the response shown by shoot A.

[1]
b.

Explain why shoot A grows towards the light.

[3]
c.

Explain the results for shoot C and shoot D.

[2]
d.

Suggest why the student used 10 seedlings in each group.

[1]
Markscheme

3.2 Coordination and control – the endocrine system Questions

  1. GCSE
  2. /Biology
  3. /3.2 Coordination and control – the endocrine system

84 exam-style questions on OCR GCSE Biology 3.2 Coordination and control – the endocrine system, covering 3.2.1 Principles of hormonal coordination and control, 3.2.2 Roles of thyroxine and adrenaline, 3.2.3 Hormones in human reproduction, 3.2.4 Interactions of reproductive hormones, 3.2.5 Hormones in contraception, 3.2.6 Hormones in reproductive technologies, 3.2.7 Plant hormones in growth and coordination, 3.2.8 Effects of plant hormones, and 3.2.9 Uses of plant hormones. Each one has a worked solution and a mark scheme showing where the marks go.

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