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. Stretching of uterus
- B. Stretching of Cervix
- C. Low level of testosterone
- D. Low level of progesterone
Explanation: The correct answer is Option C: Low level of testosterone. Testosterone is a male sex hormone and does not influence the release of…
Correct answer: Low level of testosterone1662. Find mismatch
- A. Thyroid gland-T3 and T4
- B. Parathyroid gland-Calcitonin
- C. Pancreas-Insulin
- D. Gonads-Testes and ovaries
Explanation: The correct answer is Option B: 'Parathyroid gland-Calcitonin'. This is a mismatch because the parathyroid glands produce parathyroid…
Correct answer: Parathyroid gland-Calcitonin- A. Thymus
- B. Pituitary
- C. Thyroid
- D. Pancreas
Explanation: The pancreas serves as both an endocrine and an exocrine gland. As an endocrine gland, it produces hormones like insulin and glucagon…
Correct answer: Pancreas- A. Pancreas
- B. Gonads
- C. Adrenal gland
- D. Both (A) & (B)
Explanation: The gland that serves as both an exocrine and endocrine gland is the pancreas.
Correct answer: Pancreas- A. Insulin
- B. Prolactin
- C. Lactogen
- D. Thyroxine
Explanation: Prolactin is the hormone responsible for milk secretion after parturition (childbirth).
Correct answer: Prolactin- A. Growth hormone
- B. Follicle stimulating hormone
- C. Oxytocin
- D. Adrenocorticotropic hormone
Explanation: Oxytocin is not a hormone of the anterior pituitary. It is produced by the hypothalamus and released from the posterior pituitary gland.
Correct answer: Oxytocin- A. Pituitary gland
- B. Thyroid gland
- C. Parathyroid gland
- D. Adrenal gland
Explanation: Oxytocin is secreted by the pituitary gland. Specifically, it is produced by the hypothalamus and released from the posterior pituitary…
Correct answer: Pituitary gland- A. Testosterone
- B. Progesterone
- C. Estrogen
- D. Thyroxin
Explanation: Estrogen is the hormone responsible for causing the mammary glands to enlarge at puberty.
Correct answer: Estrogen- A. Adrenal
- B. Anterior pituitary
- C. Posterior pituitary
- D. Thyroid
Explanation: The anterior pituitary gland secretes the gonadotropic hormones, which include follicle-stimulating hormone (FSH) and luteinizing hormone…
Correct answer: Anterior pituitary- A. Estrogen
- B. FSH
- C. Prolactin
- D. Oxytocin
Explanation: The most important hormone in initiating and maintaining lactation after birth is prolactin.
Correct answer: Prolactin- A. Afferent neuron
- B. Efferent neuron
- C. Associative neuron
- D. Interneuron
Explanation: Afferent neurons, also known as sensory neurons are responsible for establishing a link between the sensory organ and the central nervous…
Correct answer: Afferent neuron- A. Areolar tissue
- B. Tendon
- C. Neuron
- D. Ligament
Explanation: Neurons are specialized cells that make up nervous tissue, which is responsible for transmitting signals throughout the body.
Correct answer: Neuron- A. 8 pairs
- B. 10 pairs
- C. 12 pairs
- D. 31 pairs
Explanation: Humans have 12 pairs of cranial nerves that emerge directly from the brain, each designated with a specific function.
Correct answer: 12 pairs- A. Thicker the nerve fiber-less resistance to flow of current-faster the nerve impulse.
- B. Thicker the nerve fiber-more resistance to flow of current-slower the nerve impulse
- C. Thinner the nerve fiber-less resistance to flow of current-slower the nerve impulse
- D. None of the above
Explanation: The correct answer is that thicker nerve fibers have less resistance to the flow of current, leading to faster nerve impulse transmission.
Correct answer: Thicker the nerve fiber-less resistance to flow of current-faster the nerve impulse.- A. 5
- B. 10
- C. 15
- D. 20
Explanation: The Na+/K+ pump, also known as Na+/K+-ATPase, is crucial in maintaining the resting membrane potential of cells by actively transporting…
Correct answer: 15- A. Para sympathetic
- B. Sympathetic
- C. Somatic
- D. Peripheral
Explanation: The parasympathetic nervous system predominates in quiet "rest and digest" conditions while the sympathetic nervous system drives the…
Correct answer: Sympathetic- A. Na+ into the axon and K+ out of the axon
- B. K+ into the axon and Na+ out of the axon
- C. Na+ and K+ within the axon toward the axon terminal
- D. Increased Na+ permeability leading to an influx of Na+
Explanation: When a neuron fiber is stimulated by a stimulus of adequate strength (threshold stimulus), the stimulated area of the fiber becomes…
Correct answer: Increased Na+ permeability leading to an influx of Na+- A. Respiratory system
- B. Nervous system
- C. Circulatory system
- D. Bones and muscles
Explanation: Tetanus is an infection of the nervous system caused by Clostridium tetani bacteria.
Correct answer: Nervous system- A. Myofibrils
- B. Lines
- C. Sarcolemma
- D. Dendrites
Explanation: Dendrites are specialized extensions of nerve cells that receive electrical signals from other nerve cells and transmit them towards the…
Correct answer: Dendrites- A. Mechanical
- B. Chemical
- C. Photoreceptors
- D. Georeceptors
Explanation: Receptors sensitive to smell are chemoreceptors, specifically olfactory receptors.
Correct answer: Chemical