This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Biology Chapter 21 Neural Control And Coordination – Quiz 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 21 Neural Control And Coordination Quiz 6 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Cerebellum of brain is A) Concerned with the maintenance of posture equilibrium. B) Responsible for olfactory functions. C) Controls optic functions. D) Both 1 and 2. Show Answer Correct Answer: A) Concerned with the maintenance of posture equilibrium. 2. The bulb-like structures present at the terminals of the axon are called the A) Synaptic knobs. B) Axon hillock. C) Synaptic vesicles. D) Dendrites. Show Answer Correct Answer: A) Synaptic knobs. 3. The new potential developed on post-synaptic membrane is- A) Always excitatory. B) Always inhibitory. C) May be excitatory or inhibitory. D) Neither excitatory nor inhibitory. Show Answer Correct Answer: C) May be excitatory or inhibitory. 4. Mark the area of cerebral cortex responsible for complex functions like intersensory association, memory and communication A) Sensory area. B) Motor area. C) Associative area. D) Both (1) & (2). Show Answer Correct Answer: C) Associative area. 5. What do Dendrites do? A) Intakes information from other neurons. B) Produces fatty tissue for the Myelin Sheath. C) Sends information to the next cell. D) Controls the speed of electrical signal through the axon. Show Answer Correct Answer: A) Intakes information from other neurons. 6. Saltatory conduction means that the membrane potential changes A) Along the entire length of the axons. B) Only when there is an imbalance between the salts. C) In an all or none fashion. D) Only at the node of ranvier. Show Answer Correct Answer: D) Only at the node of ranvier. 7. Cavity of vitreous humour (gel) is- A) Behind the lens. B) In front of lens. C) Between choroid and retina. D) Between choroid and sclera. Show Answer Correct Answer: A) Behind the lens. 8. Body coordination is maintained by- A) Neuroendocrine system. B) Excretory system. C) Endocrine system. D) Nervous system. Show Answer Correct Answer: A) Neuroendocrine system. 9. Afferent nerve fibres carry impulses from A) Effector organs to CNS. B) Receptors to CNS. C) CNS to receptors. D) CNS to muscles. Show Answer Correct Answer: B) Receptors to CNS. 10. Brain stem consists of (1) Amygdala, pons and medulla oblongata (2) Mid brain, pons and medulla oblongata (3) Hippocampus, pons and medulla oblongata (4) Hypothalamus, mid brain, pons and medulla oblongata A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: B) 2. 11. A-The human neural system is divided into two parts-CNS and PNSB-The autonomic neural system is classified into sympathetic and parasympathetic neural system. A) Both are correct. B) Both are incorrect. C) A is correct only. D) B is correct only. Show Answer Correct Answer: A) Both are correct. 12. The binding of neurotransmitters with the receptors opens ion channel allowing entry of ions which can generate a new potential in the A) Pre-synaptic membranes. B) Post-synaptic membranes. C) Synaptic cleft. D) Synaptic vesicles. Show Answer Correct Answer: B) Post-synaptic membranes. 13. A-axons are covered by myelin sheath in CNS R-these are called tracts in CNS A) A&R both true, R is correct explanation of A. B) A&R both true, but R is not correct explanation of A. C) A is true but R is false. D) Both A&R are false. Show Answer Correct Answer: B) A&R both true, but R is not correct explanation of A. 14. Which of the following pairs is correctly matched? A) Dendrites-Transmit impulses away from the cell body. B) Axons-Receive impulses from other neurons. C) Dendrites-Receive impulses from other neurons. D) Axons-Only found in the spinal cord. Show Answer Correct Answer: C) Dendrites-Receive impulses from other neurons. 15. Why is impulse transmission across an electrical synapse always faster than across a chemical synapse? A) Because electrical synapses do not require neurotransmitters. B) Because chemical synapses have a larger synaptic cleft. C) Because electrical synapses are only found in the brain. D) Because chemical synapses use more energy. Show Answer Correct Answer: A) Because electrical synapses do not require neurotransmitters. 16. Middle ear is connected through throat through ..... A) Ossicles. B) Cochlea. C) Semicircular canal. D) Eustachian tube. Show Answer Correct Answer: D) Eustachian tube. 17. Which one of the following is not a refractive medium of the eye? A) Lens. B) Vitreous humour. C) Aqueous humour. D) Pupil. Show Answer Correct Answer: D) Pupil. 18. In a nerve if sodium pump is blocked which of the following is likely to happen A) Na+ and K+ will increase outside cell. B) Na+ oustide the nerve will increase. C) Na+ inside the nerve increase. D) K+ inside the nerve will increase. Show Answer Correct Answer: C) Na+ inside the nerve increase. 19. A-a deep cleft divides cerebrum transversely into two equal halvesR-these halves are known as cerebral hemispheres A) A&R both true, R is correct explanation of A. B) A&R both true, but R is not correct explanation of A. C) A is true but R is false. D) Both A&R are false. Show Answer Correct Answer: D) Both A&R are false. 20. At blind spot (1) Optic nerves leave the eye and retinal blood vessels enter it (2) Retinal blood vessels leave the eye and optic nerves enter it (3) There is no involvement of optic nerves at all (4) There is no involvement of retinal blood vessels at all A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: A) 1. 21. Unidirectional transmission of the nerve impulse is maintained by- A) Interneurons. B) Myelin sheath. C) Synapse. D) Membrane polarity. Show Answer Correct Answer: C) Synapse. 22. The thinned-out portion of retina where only cones are densely packed is, called A) Blind spot. B) Corpus luteum. C) Macula lutea. D) Fovea. Show Answer Correct Answer: D) Fovea. 23. Type of photoreceptor that functions in low light and creates shades of gray A) Retina. B) Rod. C) Cone. D) Choroid. Show Answer Correct Answer: B) Rod. 24. Which part of the brain is a major coordinating center for sensory and motor signaling A) Association area. B) Cerebellum. C) Thalamus. D) Hypothalamus. Show Answer Correct Answer: C) Thalamus. 25. The name of nervous band connecting the cerebral hemispheres is- A) Corpus albicans. B) Corpus callosum. C) Corpus striatum. D) Corpus spongiosum. Show Answer Correct Answer: B) Corpus callosum. ← PreviousNext →Related QuizzesClass 11 Biology Chapter 21 Neural Control And Coordination Quiz 1Class 11 Biology Chapter 21 Neural Control And Coordination Quiz 2Class 11 Biology Chapter 21 Neural Control And Coordination Quiz 3Class 11 Biology Chapter 21 Neural Control And Coordination Quiz 4Class 11 Biology Chapter 21 Neural Control And Coordination Quiz 5Class 11 Biology Chapter 21 Neural Control And Coordination Quiz 7Class 11 Biology Chapter 21 Neural Control And Coordination Quiz 8Class 11 Biology Chapter 21 Neural Control And Coordination Quiz 9Class 11 Biology Chapter 21 Neural Control And Coordination Quiz 10Class 11 Biology Chapter 21 Neural Control And Coordination Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books