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. Acetylcholine
- B. Adrenaline
- C. Estradiol
- D. Testosterone
Explanation: Acetylcholine is the hormone discharged at the neuromuscular junction. The neuromuscular junction is a specialized synapse between a motor…
Correct answer: Acetylcholine1042. The large number of bundle fibers that joins the left and right cerebral hemispheres is called?
- A. Broca's area
- B. Lateral sulcus
- C. Corpus callosum
- D. Thalamus
Explanation: The two hemispheres in your brain are connected by a thick bundle of nerve fibers called the corpus callosum that ensures both sides of…
Correct answer: Corpus callosum- 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: Axons- 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- A. Medulla
- B. Thalamus
- C. Hypothalamus
- D. Corpus callosum
Explanation: The thalamus is a structure in the brain that acts as a relay station for sensory information from the body to the Cerebral cortex, as…
Correct answer: Thalamus- A. Gibberellins
- B. Cytokinins
- C. Auxins
- D. Abscisic acid
Explanation: Abscisic acid is a plant hormone that promotes leaf senescence and is involved in stress responses, such as drought and salt stress.
Correct answer: Abscisic acid- A. Muscle cells
- B. Nerve cells
- C. Bone cells
- D. Gland cells
Explanation: The longest cell in the human body is the neuron or nerve cell. Some neurons can be up to three or four feet long, stretching from the…
Correct answer: Nerve cells- A. Ankle jerk
- B. Knee jerk
- C. Abdominal reflex
- D. Both A and B
Explanation: The ankle jerk is elicited by tapping the Achilles tendon with a reflex hammer while the foot is dorsiflexed, which causes a contraction…
Correct answer: Both A and B1049. Which fluid bathes the neurons of brain and spinal cord and cushions against the bumps and jolts?
- A. Blood
- B. Interstitial fluid
- C. Intracellular fluid
- D. Cerebrospinal fluid
Explanation: Blood is a specialized bodily fluid that circulates throughout the body via the circulatory system, delivering oxygen and nutrients.
Correct answer: Cerebrospinal fluid- A. Spherical
- B. Butterfly
- C. Mosquito
- D. Rectangular
Explanation: Option A: This is not the correct shape.Option B: Shape of gray matter in the spinal cord is H or butterfly in other words thus this…
Correct answer: Butterfly- A. Gibberellins
- B. Cytokinins
- C. Auxins
- D. Ethene
Explanation: Gibberellins are plant hormones that regulate various developmental processes, including stem elongation, germination, dormancy…
Correct answer: Gibberellins- A. Spinal reflexes has 4 elements
- B. Lower motor neurons has cell body in anterior column of grey matter.
- C. Grey matter that lies transversely is lateral commissure
- D. Spinal cord has 3 equal parts
Explanation: Option: B Lower motor neuron has a cell body in the anterior column of grey matter.
Correct answer: Lower motor neurons has cell body in anterior column of grey matter.- A. Z discs
- B. Dendrites
- C. Sarcomeres
- D. Neuromuscular junctions
Explanation: The neuromuscular junction is a highly specialised synapse between a motor neuron nerve terminal and its muscle fiber that are responsible…
Correct answer: Neuromuscular junctions- A. Left cerebral hemisphere
- B. Right cerebral hemisphere
- C. Hippocampus
- D. Corpus callosum
Explanation: The left side of the body is controlled by the right side of the brain.
Correct answer: Right cerebral hemisphere- A. Cervical
- B. Thoracic
- C. Lumbar
- D. AlI of these
Explanation: Spinal cord is divided into five segments: cervical,thoracic,lumbar,sacral and coccygeal. Hence option d is correct.
Correct answer: AlI of these- A. They not only conduct impulses but also generate them
- B. They are not the only cellular component of nervous system
- C. They may show limited regenerative capabilities
- D. Like all the living cells, they mature and divide to form similar cells
Explanation: D is correct option because in the neurons there is absence of centrioles or centrosomes .Due to absence of centrioles they don't perform…
Correct answer: Like all the living cells, they mature and divide to form similar cells- A. Brain
- B. Central nervous system
- C. Peripheral nervous system
- D. Somatic division
Explanation: Option B is correct since spinal cord is offshoot of brain and both are what make the CNS.
Correct answer: Central nervous system1058. In the peripheral nervous system, the nerves that arise from spinal cord and brain are called?
- A. Cranial nerves
- B. Spinal nerves
- C. Frontal nerves
- D. Both a and b
Explanation: The peripheral nervous system refers to parts of the nervous system outside the brain and spinal cord.
Correct answer: Both a and b- A. Left cerebral hemisphere
- B. Right cerebral hemisphere
- C. Hippocampus
- D. Corpus callosum
Explanation: Option A is right and this is due to a phenomenon called decussation, that is the criss-cross wiring due to which the left hemisphere…
Correct answer: Left cerebral hemisphere- A. Ovaries
- B. Testes
- C. Egg
- D. Kidneys
Explanation: The ovaries have two main reproductive functions in the body. They produce oocytes (eggs) for fertilisation and they produce the…
Correct answer: Ovaries