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.
Last updated
1,687 questions · page 38 of 85
- A. 60%
- B. 40%
- C. None
- D. 90%
Explanation: The thyroid gland produces just 20% of the highly active triiodothyronine T3, but it produces 90% of the prohormone thyroxine T4.
Correct answer: 90%- A. Pacinian corpuscles
- B. Chemoreceptors
- C. Meissner's corpuscles
- D. Mechanoreceptors
Explanation: Pacinian corpuscles are situated quite deep in the body. They have encapsulated nerve endings and receive deep pressure stimuli.
Correct answer: Pacinian corpuscles- A. Cell body
- B. Dendrites
- C. Axon and cell body
- D. Axon
Explanation: Bodian staining uses silver proteins, copper, and gold chloride to stain neuronal cell bodies (soma) and axons dark brown.
Correct answer: Axon and cell body- A. Chordates
- B. Sponges
- C. Platyhelminthes
- D. Coelenterates
Explanation: The diffuse nervous system is seen in coelenterates, also known as cnidarians, such as corals, hydras, jellyfish, and sea anemones.
Correct answer: Coelenterates- A. Sensory neuron
- B. Motor neuron
- C. Ganglia
- D. Intermediate neuron
Explanation: Motor neurons carry messages from the coordination center of the brain towards the body.
Correct answer: Motor neuron- A. Cerebellum
- B. Medulla oblongata
- C. Hippocampus
- D. Amygdala
- E. Pons
Explanation: The hippocampus is involved in long-term memory. Medulla oblongata controls involuntary movements like the beating of the heart, breathing…
Correct answer: Hippocampus- A. Dilate pupils
- B. Accelerate heart beat
- C. Vasoconstriction
- D. Digestion of food
- E. Activation of sweat secretion
Explanation: The parasympathetic system is active when the body is at rest and ensures normal physiological functions like digestion and active…
Correct answer: Digestion of food- A. Dendrites
- B. Soma
- C. Axons
- D. None of these
Explanation: Axons are the ones carrying the impulses away from the cell body of the neuron, whereas dendrites bring the impulses towards the cell…
Correct answer: Axons749. Innate behaviour is:
- A. None of these
- B. Acquired through observing other's behaviours
- C. Is a part of inherited structure
- D. Acquired through learning from stimuli
Explanation: Innate behavior is a behavior that is inherited by an organism and can be performed without prior experience.
Correct answer: Is a part of inherited structure- A. Somatic
- B. Parasympathetic
- C. Sympathetic
- D. None of the above
Explanation: The Vagus nerve is part of the parasympathetic nervous system, which controls a vast majority of crucial bodily functions, including…
Correct answer: Parasympathetic- A. Habituation
- B. None of these
- C. Instinctive behavior
- D. Imprinting
- E. Classical conditioning
Explanation: Innate behavior is also referred to as instinctive behavior, as it is inherited and has no environmental influence.
Correct answer: Instinctive behavior- A. Luminal
- B. Salol
- C. Catechol
- D. Phenol
- E. All of these
Explanation: Luminal is the trade name for phenobarbital, a barbiturate drug. Barbiturates are central nervous system depressants that are used as…
Correct answer: Luminal- A. 1
- B. 12
- C. 15
- D. 10
Explanation: In total, there are 31 pairs of spinal nerves grouped regionally by spinal region.
Correct answer: 1- A. Temperature
- B. Antidiuretic hormone
- C. Sleep and emotion
- D. Homeostasis
Explanation: The hypothalamus, known as the "thermoregulatory" center of the body, plays a huge role in homeostasis, maintaining a constant internal…
Correct answer: Sleep and emotion- A. Spinal cord, axon, vertebra
- B. Cerebrum, cerebellum, pons
- C. Medulla, pons, midbrain
- D. Thalmus, midbrain, pons
Explanation: The brainstem comprises three main parts: the medulla oblongata, the pons, and the midbrain.
Correct answer: Medulla, pons, midbrain- A. Thalamus and limbic system
- B. Thalamus and cerebrum
- C. Cerebrum, limbic system and thalamus
- D. Cerebrum and limbic system
Explanation: The forebrain contains the cerebrum, limbic system, thalamus, pituitary gland, and the olfactory bulb.
Correct answer: Cerebrum, limbic system and thalamus- A. Ventral nerve cord
- B. Lateral nerve cord
- C. Dorsal nerve cord
- D. All of these
Explanation: The nervous system of nematodes (roundworm/ascehelmintus) comprises a ring of nervous tissue beneath the pharynx and four longitudinal…
Correct answer: All of these- A. Cervical
- B. Lumbar
- C. Thoracic
- D. All of these
Explanation: The spinal cord is divided into 4 regions: cervical, thoracic, lumbar, and sacral.
Correct answer: All of these- A. 1
- B. 2
- C. 3
- D. 4
Explanation: Monosynaptic refers to the presence of one chemical synapse. In a monosynaptic reflex, there is a direct connection between a sensory…
Correct answer: 1- A. Sensory
- B. Motor
- C. Mixed
- D. Options A, B, and C are all correct
Explanation: The dorsal root of the spinal cord is the afferent sensory root and carries sensory information to the brain.
Correct answer: Sensory