10th Class Biology Chapter 3 Coordination & Control Short Questions Answer

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10th Class Biology Chapter 3 Coordination & Control Short Questions Answer

What is coordination?

What is coordination?

Answer : The tissues or organs in body of multicellular, organism work together performing their tasks as the needs of the whole body. This is called coordination it has 2 types.
i. Chemical coordination
ii. Nervous coordination.
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Describe the mechanism of breathing.

Describe the mechanism of breathing.

Answer : The physical movement associated with the gaseous exchange are called breathing.They are two phase of breathing inhalation and inhalation.
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What is the role of thalamus?

What is the role of thalamus?

Answer : Relay center between parts of brain & spinal cord receives and modifies sensory impulses before they travel to cerebrum. Pain perception and consciousness.
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Define alveolus?

Define alveolus?

Answer : A sac-like structure present neat to the alveolus duet in lungs.
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What is aerobic respiration?

What is aerobic respiration?

Answer : Aerobic respiration is the process of produce cellular energy involving oxygen cell break down food in the miteconduit in a lung.
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What is cerebrum? What is its function?

What is cerebrum? What is its function?

Answer : It is the largest part of brain Function; It control skeletal muscles, thinking, intelligence and emotions.
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What is air passageway?

What is air passageway?

Answer : The air passageway consist of the parts through which the outside air comes in the lungs and after the exchange of gases it goes out.
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What is cerebral cortex?

What is cerebral cortex?

Answer : Upper surface of cerebral hemispheres is called cerebral cortex. It consists of grey matter, it has four lobes.
i. Frontal lobe
ii. Parietal lobe
iii. Temporal Lobe
iv. Occipital love
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What is cellular respiration?

What is cellular respiration?

Answer : Organism get the oxygen needed for cellular respiration from their environment and provide it to their cells.The carbon dioxide produce during cellular respiration taken out of the cell and ultimately from the body.
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What are the major parts of brain?

What are the major parts of brain?

Answer : i. Forebrain
ii. Midbrain
iii. Hind brain
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What are intercostal?

What are intercostal?

Answer : Intercostal muscles the muscles located between the ribs surrounding the lungs comprising the superficial eternal intercostal muscle and the deep internal intercostal muscle they play role in breathing.
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What are the components of a coordinated action?

What are the components of a coordinated action?

Answer : Stimulus, Receptor, Coordinator, Effector, Response
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What is retina?

What is retina?

Answer : It is inner layer of eye ball. It contains rods and cones and associated neurons.
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Inspiration or Inhalation.

Inspiration or Inhalation.

Answer : During inspiration the rib muscles contract and rib are raised.At the same time dome-shaped diaphragm contract and is lowered.These movement increase the area of the thoracic cavity which reduce the pressure on lungs as a result the lungs expand and the air pressure with them also decrease.The air from outside rushes into the lungs to equalize the pressure on bathe side.
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What is function of neuron?

What is function of neuron?

Answer : Neurons conduct impulses from receptors to coordinator and from coordinators to effectors.
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Trace the path of air from the nasal cavity to the alveoli?

Trace the path of air from the nasal cavity to the alveoli?

Answer : The pathway air enter the nostrils through the glottis into the trachea into the right and left bronchi which bromchies and rebromches.
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What is optic disc or blind spot?

What is optic disc or blind spot?

Answer : Optic disc is a point on retina where the optic nerve centers retina. No photosensitive cells exist at this point, so it is called blind spot.
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What are sensory neurons?

What are sensory neurons?

Answer : SN(s) conduct sensory information from receptors to CNS, SN have one dendrite and one axon.
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Difference between breathing and respiration?

Difference between breathing and respiration?

Answer : Taking in oxygen and giving out of carbon dioxide is termed as gaseous exchange.Respiration involves the mechanical and biochemical process where as breathing is the mechanical or physical process of exchange of gases.
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What is night blindness?

What is night blindness?

Answer : The deficiency of vitamin A causes night blindness.
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What are receptors? Give examples?

What are receptors? Give examples?

Answer : Cells, tissues or organs of body which detect stimuli are called receptors, e.g. Sound waves are detected by ear, light is detected by eyes, and taste is detected by taste buds on tongue.
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What is choroid?

What is choroid?

Answer : It is middle layer of eye ball. It contains blood vessels and gives a dark colour it bends behind cornea to form iris.
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What are the parts of neuron?

What are the parts of neuron?

Answer : Neuron consists of two parts cell body and fibers. Cell body consists of nucleus and cytoplasm.Fibers are of two types, dendrites and axons.
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Name the parts of hind brain.

Name the parts of hind brain.

Answer : i. Medulla oblongata
ii. Cerebellum
iii. Pons
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What is spinal card?

What is spinal card?

Answer : It is the continuation of medulla oblongata. It is a tubular bundle of nerves. It consists of outer white matter and central grey matter.
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Define nerve impulse.

Define nerve impulse.

Answer : A nerve impulse is waves of electrochemical changes with travels along the length of neurons.
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What is thyroxin? What is its role?

What is thyroxin? What is its role?

Answer : It is the hormone secreted by thyroid gland. Role
i. It increase “breakdown of food and release of energy.
ii. It is responsible for growth of body.
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What are the functions of insulin and Glucagon?

What are the functions of insulin and Glucagon?

Answer :

Insulin: Decrease the blood sugar level.
Glucagon: Increases the blood sugar level.

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What is colorblindness?

What is colorblindness?

Answer : Cones recognize the primary colours are blue green and red Damages to these pigments result in colour blindness. This is genetic problem in which person is unable to distinguish between different colour.
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What is optics? Who is regarded as father of optics?

What is optics? Who is regarded as father of optics?

Answer : Optics refers to the study of behavior of light. Ibn- A;-Haytham is regarded as father of optics.
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