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 181–210 of 256181.Which type of neuron carries impulses from the central nervous system to the muscles or glands? 182.The insulating sheath around the axon of a neuron is called: 183.The longest part of a neuron is typically the: 184.Which part of the brain is responsible for interpreting sensations like touch, pain, and temperature? 185.Damage to the medulla oblongata would most likely affect: 186.The main function of the cerebellum is to: 187.Which of the following is a growth-inhibiting hormone in plants? 188.The increase in growth of a plant stem due to light is mediated by: 189.A plant's root generally shows: 190.A plant's shoot generally shows: 191.The leaves of the Mimosa pudica plant (touch-me-not) fold up when touched. This is an example of: 192.Which of the following is NOT a type of tropism? 193.Tendrils coiling around a support is an example of: 194.The growth of pollen tubes towards the ovules is an example of: 195.The movement of a plant part in response to gravity is called: 196.Which gaseous plant hormone is responsible for fruit ripening? 197.The plant hormone that inhibits growth and causes wilting of leaves is: 198.Which plant hormone promotes cell division? 199.Which plant hormone is primarily responsible for stem elongation and seed germination? 200.Roots growing downwards into the soil is an example of: 201.The bending of a plant shoot towards light is an example of: 202.Which plant hormone promotes cell elongation and is responsible for phototropism? 203.Which of the following represents a negative feedback mechanism? 204.The timing and amount of hormone release are regulated by: 205.The female sex hormones are: 206.Which of the following is a male sex hormone? 207.A person suffering from diabetes has a deficiency of which hormone? 208.The hormone that regulates blood sugar levels is: 209.Which hormone is released in response to stress or danger, preparing the body for "fight or flight"? 210.Deficiency of iodine in the diet can lead to a condition called: