Comparative Neurobiology of Animal mcqs January 8, 2026April 9, 2024 by u930973931_answers 33 min Score: 0 Attempted: 0/33 Subscribe 1. What is the study of the nervous system structure and function across different animal species known as? (A) Comparative psychology (B) Behavioral neuroscience (C) Comparative neurobiology (D) Ethology 2. Which of the following is NOT a primary function of the nervous system? (A) Sensation (B) Reproduction (C) Integration (D) Motor control 3. Which part of the nervous system is responsible for voluntary movement and sensory perception? (A) Enteric nervous system (B) Peripheral nervous system (C) Autonomic nervous system (D) Central nervous system 4. What is the role of neurotransmitters in neuronal communication? (A) They synthesize energy for neurons. (B) They regulate the growth of neurons. (C) They protect neurons from damage. (D) They transmit electrical signals across synapses. 5. In which phylum can nervous systems be found in animals for the first time? (A) Porifera (B) Platyhelminthes (C) Cnidaria (D) Annelida 6. Which of the following animals has a relatively simple nervous system consisting of a nerve net? (A) Fish (B) Earthworm (C) Octopus (D) Flatworm 7. The brain of vertebrates is composed of several regions. Which region is primarily responsible for coordinating motor movements? (A) Hypothalamus (B) Medulla oblongata (C) Cerebrum (D) Cerebellum 8. Which animal group possesses the most complex brains relative to body size? (A) Birds (B) Reptiles (C) Insects (D) Mammals 9. What is the function of the cerebral cortex in mammals? (A) Regulation of heart rate and respiration (B) Coordination of voluntary movements (C) Processing sensory information and higher cognitive functions (D) Regulation of hormonal secretion 10. What is the primary neurotransmitter involved in inhibitory signaling in the mammalian nervous system? (A) Acetylcholine (B) Glutamate (C) Dopamine (D) GABA (Gamma-aminobutyric acid) 11. Which animal group possesses a decentralized nervous system, with ganglia distributed throughout the body? (A) Mollusks (B) Echinoderms (C) Chordates (D) Arthropods 12. What is the function of the optic lobe in the brain of many vertebrates? (A) Auditory processing (B) Olfactory processing (C) Visual processing (D) Motor coordination 13. In which animal group are giant axons found, facilitating rapid conduction of nerve impulses? (A) Fish (B) Insects (C) Mammals (D) Cephalopods 14. Which neurotransmitter is commonly associated with reward pathways in the brain? (A) Dopamine (B) Norepinephrine (C) Serotonin (D) Endorphins 15. Which animal group exhibits the phenomenon of neurogenesis throughout life, generating new neurons in the brain? (A) Fish (B) Amphibians (C) Mammals (D) Birds 16. What is the primary function of the hindbrain in vertebrates? (A) Regulation of body temperature (B) Emotional regulation (C) Processing sensory information (D) Coordination of motor activities and vital functions 17. Which of the following animals possesses a relatively large olfactory bulb compared to its brain size, indicating a strong sense of smell? (A) Primates (B) Birds (C) Fish (D) Insects 18. Which animal group exhibits remarkable neural regeneration capabilities, even regrowing entire sections of their central nervous system? (A) Fish (B) Mammals (C) Reptiles (D) Amphibians 19. Which neurotransmitter is primarily associated with the regulation of mood, sleep, and appetite? (A) Dopamine (B) Serotonin (C) GABA (D) Glutamate 20. What is the function of the hypothalamus in the mammalian brain? (A) Processing visual information (B) Regulation of body temperature and hunger (C) Coordination of voluntary movements (D) Memory formation 21. In which animal group is the cephalopod nervous system highly centralized, with a large brain and complex sensory organs? (A) Insects (B) Fish (C) Birds (D) Mollusks 22. Which neurotransmitter is associated with the “fight or flight” response in mammals? (A) GABA (B) Norepinephrine (C) Acetylcholine (D) Glutamate 23. What is the function of the amygdala in the mammalian brain? (A) Emotional processing and memory formation (B) Regulation of sleep-wake cycles (C) Coordination of voluntary movements (D) Control of autonomic functions 24. Which animal group exhibits a decentralized nervous system with a nerve ring surrounding the pharynx? (A) Flatworms (B) Annelids (C) Mollusks (D) Cnidarians 25. Which neurotransmitter is primarily associated with the regulation of attention, arousal, and reward? (A) Dopamine (B) Serotonin (C) Acetylcholine (D) GABA 26. What is the function of the limbic system in the mammalian brain? (A) Regulation of motor coordination (B) Integration of sensory information (C) Emotional regulation and memory formation (D) Control of autonomic functions 27. Which animal group possesses the most complex nervous system organization among invertebrates? (A) Annelids (B) Insects (C) Echinoderms (D) Mollusks 28. What is the role of glial cells in the nervous system? (A) Providing structural support and insulation to neurons (B) Transmitting electrical signals between neurons (C) Synthesizing neurotransmitters (D) Initiating action potentials 29. Which animal group has a nervous system that includes a nerve ring and radial nerves extending into the arms? (A) Mollusks (B) Echinoderms (C) Insects (D) Annelids 30. Which neurotransmitter is associated with the regulation of sleep and wakefulness? (A) Acetylcholine (B) Dopamine (C) Serotonin (D) Norepinephrine 31. What is the function of the thalamus in the mammalian brain? (A) Regulation of body temperature (B) Coordination of motor activities (C) Processing sensory information and relaying it to the cerebral cortex (D) Emotional processing 32. Which animal group exhibits a centralized nervous system with a brain and ganglia along the ventral nerve cord? (A) Flatworms (B) Cnidarians (C) Mollusks (D) Annelids 33. Which neurotransmitter is primarily associated with muscle contraction in the peripheral nervous system? (A) Dopamine (B) Acetylcholine (C) Serotonin (D) GABA