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).
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Questions on Control and Coordination
Showing 211–240 of 256211.The hormone responsible for regulating the basal metabolic rate in the body is: 212.Which gland is known as the "master gland" because it controls the activity of other endocrine glands? 213.Sensory information from the body reaches the brain through the: 214.The spinal cord originates from the: 215.Which of these is NOT a part of the hindbrain? 216.The fluid that protects the brain from mechanical shocks is: 217.The brain is protected by a bony box called the: 218.The hunger and thirst centers in the brain are located in the: 219.Which part of the brain controls voluntary movements? 220.Involuntary actions like salivation, vomiting, and blood pressure are controlled by the: 221.Which part of the brain is responsible for maintaining posture and balance of the body? 222.The main thinking part of the human brain is the: 223.Which of the following is an example of a reflex action? 224.The quick, spontaneous, and involuntary response to a stimulus is called a: 225.Which part of the central nervous system controls reflex actions? 226.The components of a reflex arc include all of the following EXCEPT: 227.A reflex action is an example of: 228.Chemicals that transmit nerve impulses across a synapse are called: 229.The pathway of a nerve impulse in a neuron is generally: 230.Which part of the neuron receives information? 231.The junction between two neurons is called a: 232.Which of the following is the structural and functional unit of the nervous system? 233.What is the difference between the manner in which movement takes place in a sensitive plant and the movement in our legs? 234.Compare and contrast nervous and hormonal mechanisms for control and coordination in animals. 235.How are involuntary actions and reflex actions different from each other? 236.What is the need for a system of control and coordination in an organism? 237.How does chemical coordination occur in plants? 238.Which signals will get disrupted in case of a spinal cord injury? 239.How does phototropism occur in plants? 240.What is the function of receptors in our body? Think of situations where receptors do not work properly. What problems are likely to arise?