Free Brain MCQs with Answers
91 Brain MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
The brain includes the cerebrum, cerebellum, brainstem, hypothalamus and medulla, each with distinct roles in sensation, movement and homeostasis. Questions connect major brain regions with their functions, reflex control and coordination, while distinguishing involuntary responses from hormonal regulation.
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- A. Hypothalamus
- B. Thalamus
- C. Cerebellum
- D. Cerebral cortex
Explanation: Option B is correct because the thalamus serves as a relay station for sensory information.
Correct answer: Thalamus- A. Top of brain
- B. Behind the thalamus
- C. Behind the hypothalamus
- D. Top of spinal cord
Explanation: The medulla oblongata is situated at the top of the spinal cord, at the point where the brainstem begins.
Correct answer: Top of spinal cord- A. Insight learning
- B. Conditioning
- C. Habituation
- D. Imprinting
Explanation: A hungry animal will respond to a situation in a way that is most natural for that animal.
Correct answer: Conditioning- A. Instinct
- B. Maturation
- C. Learning
- D. Imprinting
Explanation: Learning involves acquiring knowledge, skills, or behaviors through experiences, interactions, and observation.
Correct answer: Learning- A. Cerebellum
- B. Pons
- C. Medulla oblongata
- D. Thalamus
Explanation: Your thalamus is an egg-shaped structure in the middle of your brain. It's known as a relay station of all incoming motor (movement) and…
Correct answer: Thalamus- A. Classical conditioning
- B. Habituation
- C. Imprinting
- D. Operant conditioning
Explanation: This occurs when an organism becomes accustomed to a repeated stimulus, leading to a decreased response.
Correct answer: Habituation- A. 1 only
- B. 2 only
- C. 1 and 2 only
- D. 2 and 3 only
Explanation: Honeybees communicate the distance to a food source by the duration of their waggle dance, with longer durations indicating greater…
Correct answer: 2 and 3 only- A. Imprinting
- B. Habituation
- C. Innate
- D. Instinct
Explanation: Habituation, or the relatively permanent waning of a response as a result of repeated stimulation, is a form of behavioural plasticity…
Correct answer: Habituation- A. Aggregation
- B. Territoriality
- C. Altruism
- D. Dominance Hierarchy
Explanation: Evolutionary biologists determined that an animal's behaviors are altruistic when they benefit other individuals, even to the potential…
Correct answer: Altruism- A. Cerebellum
- B. Hippocampus
- C. Amygdala
- D. Hypothalamus
Explanation: The hippocampus, a key component of the limbic system, plays a crucial role in long-term memory formation due to its involvement in the…
Correct answer: Hippocampus- A. Dominance hierarchy
- B. Altruism
- C. Territoriality
- D. Instinct
Explanation: Territoriality, an agonistic behavior, is exhibited by mountain gorillas as a means of defending their habitat and resources from…
Correct answer: Territoriality- A. Left cerebral hemisphere
- B. Mid brain
- C. Hippocampus
- D. Hind brain
Explanation: The auditory relay centre is located in the "midbrain". It receives auditory information from the ears and relays it to other brain parts…
Correct answer: Mid brain- A. Pons
- B. Hypothalamus
- C. Hippocampus
- D. Amygdala
- E. Midbrain
Explanation: The hypothalamus is a small brain region that regulates essential bodily functions, including temperature, hunger, thirst, sleep-wake…
Correct answer: Hypothalamus- A. Hypothalamus
- B. Hippocampus
- C. Thalamus
- D. Amygdala
Explanation: Hypothalamus is involved in sleep- wake cycle, menstrual cycle , hunger thrust etc.
Correct answer: Hypothalamus- A. Corpus callosum - communication between the left and right cerebral cortices
- B. Cerebrum - calculation and contemplation
- C. Medulla oblongata - homeostatic control
- D. Cerebellum - language comprehension
Explanation: The cerebellum coordinates movement and balance. Language comprehension is a function of the cerebrum.
Correct answer: Cerebellum - language comprehension- A. Corpus callosum
- B. Hindbrain
- C. Forebrain
- D. Midbrain
Explanation: The correct answer is the midbrain, as the midbrain functions as a relay system, transmitting information necessary for vision and…
Correct answer: Midbrain- A. Epilepsy
- B. Alzheimer's disease
- C. Parkinson's disease
- D. Lou Gehrig's disease
Explanation: The hallmark symptom of epilepsy is seizures, which can vary widely in their presentation.
Correct answer: Epilepsy- A. Lungs
- B. Eyes
- C. Brain
- D. Bones
Explanation: Parkinson disease results from degeneration of dopamine-producing neurons in brain regions involved in movement control, especially the…
Correct answer: Brain- A. 2%
- B. 3%
- C. 7%
- D. 8%
Explanation: The adult human brain has a mass of roughly 1.3 to 1.4 kg, while average body mass is about 65 to 70 kg, giving approximately 1.3/65 x…
Correct answer: 2%60. The sensation of pleasure, punishment or sexual arousal when stimulated by the parts of the brain:
- A. Hippocampus
- B. Hypothalamus
- C. Amygdala
- D. Thalamus
Explanation: Amygdala controls feelings and emotions of love, hate, anger, fear, rage, and sexual arousal.
Correct answer: Amygdala