Free Coordination and Control MCQs with Answers
1,687 Coordination and Control MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.
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- A. Breathing
- B. Swallowing
- C. Connection between brain and spinal cord
- D. Heart beat
Explanation: The explanation for this question is as follow: Medulla oblongata controls several automatic functions, such as breathing, Heart rate…
Correct answer: Connection between brain and spinal cord- A. Cerebrum
- B. Hypothalamus
- C. Hippocampus
- D. Thalamus
Explanation: The explanation for this question is as follow: Hippocampus plays an important role in the formation of long term memory, and thus is…
Correct answer: Hippocampus- A. Amniotic fluid
- B. Pleural fluid
- C. Synovial fluid
- D. Blood plasma
Explanation: Cerebrospinal fluid (CSF) and plasma share similar composition due to the fact that CSF is produced from plasma by the choroid plexus, a…
Correct answer: Blood plasma- A. Blood
- B. Interstitial fluid
- C. Intercellular fluid
- D. Cerebrospinal fluid
Explanation: The correct option is D as, cerebrospinal fluid (CSF) is a clear, colourless fluid that bathes the brain and spinal cord, providing…
Correct answer: Cerebrospinal fluid- A. Diencephalon
- B. Midbrain
- C. Cerebrum and basal ganglia
- D. Cerebellum, pons and medulla oblongata
Explanation: The correct option is D as:The embryonic hindbrain gives rise to three main structures in the brain: the medulla oblongata, the pons, and…
Correct answer: Cerebellum, pons and medulla oblongata1406. Hindbrain includes:
- A. Medulla, pons and cerebellum.
- B. Medulla, cerebellum and hypothalmus
- C. Cerebellum, Medulla and brainstem
- D. All of the above
Explanation: The hindbrain is made up of three parts; medulla oblongata, pons and the cerebellum.
Correct answer: Medulla, pons and cerebellum.- A. Cerebral cortex
- B. Infundibulum
- C. Corpus callosum
- D. None of the above
Explanation: Option A is correct as the cerebral cortex is responsible for increasing the surface area of the forebrain.
Correct answer: Cerebral cortex- A. Brain stem
- B. Cerebrum
- C. Cerebellum
- D. Diencephalon
Explanation: The thalamus and the hypothalamus are located in the diencephalon, which is the middle part of the brain.
Correct answer: Diencephalon- A. Asymmetrical animals
- B. Bilaterally symmetrical animals
- C. Radial symmetrical animals
- D. Both B and C
Explanation: A central nervous system (CNS) is a network of nerves that controls the body's functions.
Correct answer: Bilaterally symmetrical animals- A. Innersurface of neuron is more positive
- B. Both of these surfaces are equally positive
- C. Outer surface of neuron is more positive
- D. All of these
Explanation: In a resting neuron, the inside of the cell is more negative than the outside.
Correct answer: Outer surface of neuron is more positive- A. -80 mv
- B. -70 mv
- C. -50 mv
- D. -85 mv
Explanation: The resting membrane potential is typically around -70 millivolts (mV) (book information)
Correct answer: -70 mv- A. 0.17V
- B. -50mv
- C. 0.05V
- D. Both A and B
Explanation: The approximate value of the active membrane potential is -50 mV. This is the voltage at which a neuron fires an action potential.
Correct answer: -50mv- A. Myelinated impulse
- B. Jumping impulse
- C. Saltatory impulse
- D. All of these
Explanation: Saltatory conduction describes the way an electrical impulse skips from node to node down the full length of an axon, speeding the arrival…
Correct answer: Saltatory impulse- A. Many dendrites
- B. Myelinated axons
- C. Non-myslinated axons
- D. Many genes
Explanation: Nerve cells transmit messages faster when they have myelinated axons. Myelin is a fatty sheath that surrounds the axon of a neuron.
Correct answer: Myelinated axons- A. Z discs
- B. Dendrites
- C. Sarcomeres
- D. Neuromuscular junctions
Explanation: The sites where nerve impulse is transmitted from the nerve endings to the skeleton muscle cell membrane are neuromuscular junctions.
Correct answer: Neuromuscular junctions- A. Hepatic arteries
- B. Carotid arteries
- C. Renal arteries
- D. Pulmonary arteries
Explanation: Stretch receptors are present in the carotid arteries of tetrapods.These receptors are also known as baroreceptors.
Correct answer: Carotid arteries- A. Pacinian corpuscles
- B. Krause cod bulb
- C. Meissner's corpuscles
- D. Merkel's endings
Explanation: The stimulus of deep pressure is detected by pacinian corpuscles. Pacinian corpuscles are large, encapsulated mechanoreceptors that are…
Correct answer: Pacinian corpuscles- A. Muscles only
- B. Organs only
- C. Both A and B
- D. Bone only
Explanation: Stretch receptors are present in both muscles and organs of tetrapods.They are also known as mechanoreceptors.They are sensitive to…
Correct answer: Both A and B1419. Receptors are:
- A. Brain
- B. Muscles and glands
- C. Eye and nose
- D. Nerve only
Explanation: Receptors are sensory cells that detect stimuli from the environment and send signals to the brain.
Correct answer: Eye and nose- A. Chemoreceptors
- B. Photoreceptors
- C. Thermoreceptors
- D. Mechanoreceptors
Explanation: Mechanoreceptors detect stimuli of touch, pressure, stretching, sound waves and motion. So mechanoreceptors are present in ear.
Correct answer: Mechanoreceptors