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 91–120 of 25691.The cells that provide support and nutrition to neurons are called: 92.Which of these is a response to light in a plant, but is a non-directional movement? 93.What happens at the synapse? 94.The growth of tendrils around a support is an example of: 95.The dropping of leaves in plants in response to cold weather or drought is promoted by: 96.Which system prepares the body for action in stressful situations? 97.The 'fight or flight' hormone is: 98.Which of the following is a feature of hormones? 99.What is the main function of the hypothalamus? 100.The part of the forebrain specialized for hearing, smell, memory, and emotions is the: 101.Diabetes is caused by the inability of the body to produce sufficient: 102.Which plant hormone is involved in breaking seed dormancy? 103.The role of the 'effector' in a reflex arc is to: 104.Which of the following is responsible for converting electrical signals into chemical signals at the synapse? 105.What is the role of receptors in the nervous system? 106.The peripheral nervous system (PNS) consists of: 107.The central nervous system (CNS) includes: 108.The junction where an impulse is transmitted from one neuron to another is called a: 109.The neuron consists of: 110.Which hormone is responsible for the development of secondary sexual characteristics in males? 111.Nastic movements in plants are: 112.Which part of the brain controls involuntary actions like breathing, heartbeat, and blood pressure? 113.The movement of water-sensitive roots towards water is an example of: 114.Lack of growth hormone during childhood leads to: 115.A plant hormone that promotes cell division is: 116.The main function of the spinal cord is to: 117.Which of the following hormones is secreted in response to stress or emergency situations? 118.The phenomenon of plants bending towards a source of light is called: 119.What protects the brain from physical shocks? 120.The part of the neuron that receives information from other neurons is the: