B1 - Understanding Organisms Revision

1. Which of the following is an example of positive phototropism?

  • Plant roots grow with the pull of gravity
  • Plant shoots grow away from light
  • Plant shoots grow towards light
  • Plant roots grow with the pull of gravity
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2. What is the name of the gland in the brain that detects when the blood is too hot or too cold?

  • Homeostasis
  • Hypothalamus
  • Haemoglobin
  • Hypothermia

3. Which of the following is NOT an example of how the body tries to gain or keep heat?

  • Releasing energy from food (respiration)
  • Reduced sweating
  • More blood flow to the surface of the skin
  • Shivering

4. Why does the body need protein?

  • For growth and repair
  • To prevent constipation
  • To make haemoglobin
  • For energy

5. What is the first stage in a spinal reflex?

  • Reponse
  • Stimulus
  • Receptor
  • Effector

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