Skip to content

ZIMSEC O-Level Biology

8.15.2Coordination and response

Coordination and response in ZIMSEC O-Level Biology: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic22 practice questions1 lesson

Overview

Form 4.

Learning objectives

What the syllabus expects you to be able to do.

  1. 8.15.2.1Define and illustrate phototropism and geotropism as responses of plants to light and gravity.
  2. 8.15.2.2Define plant hormones and describe the uses of auxins, gibberellins, cytokinins and ethylene in controlling growth and development, including commercial applications.

Lessons

  • Tropisms and plant hormones

    30 min

    Full access

Join to read every lesson, or see what Full access includes.

Sample question

A sample question on this topic. Answer it, check it, then read the worked answer.

Exam style

Coordination and response: sample question

1 mark

Young sorghum seedlings are grown in a closed box with a narrow slit on one side, so that light enters only through the slit. What happens to the shoots after a few days?

Choose one answer

Turn Coordination and response into a strength.

Practise with instant marking, see your mastery grow and get a study plan built around your exam date.