Control and Coordination

Topics in this chapter

• Stimuli and Sense-Organ Responses
• Neuronal Signalling and Reflexes
• Brain and Nervous System Control
• Endocrine Glands and Hormonal Control
• Plant Hormones and Growth Regulation
• Plant Tropisms and Movements

Cheat sheet

Practice questions

1. Question 1Q-B3BCE0

   Which of the following parts of a neuron receives information from the environment or other neurons?

   1. A.Axon
   2. B.Dendrite
   3. C.Soma
   4. D.Synaptic knob
   See the answer and solution
2. Question 2Q-3E1CE6

   What is the correct directional path of a nerve impulse during a reflex action?

   1. A.Effector -> Motor neuron -> Spinal cord -> Sensory neuron -> Receptor
   2. B.Receptor -> Motor neuron -> Spinal cord -> Sensory neuron -> Effector
   3. C.Receptor -> Sensory neuron -> Spinal cord -> Motor neuron -> Effector
   4. D.Spinal cord -> Receptor -> Sensory neuron -> Effector -> Motor neuron
   See the answer and solution
3. Question 3Q-5656EC

   Which part of the human brain is responsible for maintaining posture and balance of the body, as well as precision in voluntary actions?

   1. A.Cerebrum
   2. B.Cerebellum
   3. C.Medulla oblongata
   4. D.Hypothalamus
   See the answer and solution
4. Question 4Q-C03E88

   Plant movements caused by directional growth in response to external stimuli such as light or gravity are known as:

   1. A.Nastic movements
   2. B.Tropic movements
   3. C.Seismonastic movements
   4. D.Photonastic movements
   See the answer and solution
5. Question 5Q-34F9F7

   How does the plant hormone auxin cause a shoot to bend towards a unidirectional source of light?

   See the answer and solution