Control and Coordination is the process by which living organisms respond to stimuli and maintain body balance.
In Animals:
- Nervous system (brain, spinal cord, nerves) controls quick actions.
- Endocrine system (hormones) controls slow, long-lasting changes.
- Neurons carry messages as electrical signals.
- Example: Moving hand away from hot object (reflex action).
In Plants:
- Use hormones (phytohormones) to respond to light, gravity, touch, etc.
- Example: Plant bends towards light due to auxin (phototropism).
Practice Questions PDF
Download a printable worksheet on Control and Coordination with answers.
Questions on Control and Coordination
Showing 151–180 of 256151.The primary difference between a reflex action and walking is that reflex action is: 152.A condition characterized by protruding eyes, weight loss, and increased metabolism is due to the overactivity of which gland? 153.Which plant hormone is responsible for breaking seed dormancy? 154.The relay neurons are found in the: 155.Which of the following protects the spinal cord? 156.The brain and spinal cord together constitute the: 157.Which of the following ensures that a plant grows in the correct direction relative to its environment? 158.A patient reports excessive thirst and frequent urination. These symptoms could indicate a problem with the regulation of: 159.Which gland produces both hormones and digestive enzymes? 160.The role of effectors in the nervous system is to: 161.The role of receptors in the nervous system is to: 162.Increased secretion of growth hormone in adulthood can lead to: 163.If a person has low levels of growth hormone in childhood, they may suffer from: 164.The main function of the thyroid gland is to: 165.Which part of the brain coordinates the function of various organs in the body? 166.The space between the axon terminal of one neuron and the dendrite of another neuron is called the: 167.Which of the following is a specialized end of a neuron that releases chemical substances at the synapse? 168.The receptors for smell are located in the: 169.Which system provides slower responses in animals, but its effects are generally long-lasting? 170.Which system provides faster responses in animals, but its effects are generally short-lived? 171.The hormone responsible for the 'apical dominance' phenomenon in plants is: 172.Which of the following hormones is associated with seed dormancy? 173.When a seed germinates, the shoot grows upwards. This is: 174.The opening and closing of stomata is regulated by: 175.Which movement in plants is non-directional and independent of the direction of stimulus? 176.The response of plant roots to move towards water is called: 177.Which hormone prepares the uterus for pregnancy? 178.The pancreas secretes: 179.Which hormone is secreted by the adrenal glands? 180.The main function of the hypothalamus is to: