Class 11- Biology- chapter 18- Neural Control and Coordination InstructionTotal Questions : 20Total time :20 minTotal Marks : 20 x 3 = 60 MarksEach Correct Question carries : 3 MarksEach incorrect Question Carries : -1 MarksEach Unattempted Question carry : 0 MarksBe careful On Negative Markings 1. Consider the following statements and state true or false.1. Synaptic cleft of neurons secrete adrenaline.2. Myelinated nerve fibres and enveloped with Schwann cells, which form a myelin sheath around the axon.3. Non-myelinated nerve fibre is enclosed by a Schwann cell that does not form a myelin sheath.4. Spinal cord and cranial nerves are made up of non-myelinated nerve fibres. 3 and 4 are correct while 2 and 3 are wrong. 1, 2 are correct but 3 and 4 are wrong. 1, 2 and 3 are correct but 4 is wrong. 2 and 3 are correct while 1 and 4 are wrong. None 2. Pick the correct statements about the main functions of cerebrum in humans a)Control contraction of voluntary muscles through frontal lobe b)Control sensitivity, movement, memory, vocabulary through frontal lobe c)Control temperature, taste, touch, pain, etc. through parietal lobe d)Control vision and adaptation through occipital and frontal lobes a, c, d a, b, d a, b, c b, c, d None 3. Select the correct option:Blood-brain barrier in adults has ........... junctions between cells. Adhering Occluding Tight Gap None 4. The _________ is central for planning the movements and blocking unsuitable behavior, and also has roles in memory. somatosensory cortex visual cortex motor cortex prefrontal cortex None 5. The peripheral nervous system transmits messages to and from the sense organs and is responsible for Autonomic actions Voluntary actions Involuntary actions Reflex actions None 6. Which of the following is not a characteristic of the human sympathetic nervous system? Is a craniosacral division of the autonomic nervous system Has ganglia near the spinal cord Increases heart beat Prepares the person for fight or flight None 7. Select the correct statement regarding the Schwann cells. Support muscle fibres Surround axon of myelinated nerve fibre Found in Haversian system of bones Form basement membrane of epithelium. None 8. Find out the incorrect statement. Rods contain pigmented protein called rhodopsin which helps in dim light vision. The tongue contains gustatory receptors for sweet, salt, sour and bitter Macula and cristae are present in the inner ear which function in hearing. The organ of corti is present on the basilar membrane in the cochlea. None 9. The following are endothermic mammals. Amongst them there is a pair where the broad transverse band of nervous tissue connecting the two cerebral hemisphere is either poorly developed or absent1. Didelphis (Opossum) 2. Delphinus (Dolphin)3. Tachyglossus (Echidna) 4. Pteropus (Fruit Bat) 1 and 3 2 and 4 1 and 2 3 and 4 None 10. Which one of the following is not a refractive medium of the eye? Aqueous humour Lens Vitreous humour Pupil None 11. Which statement is incorrect regarding cerebral cortex? Fibres of tract in cortex are covered with myelin sheath3 It shows prominent fields It consists of grey matter Large area of cortex neither clearly sensory nor motor None 12. The parasympathetic division of the autonomic nervous system: arises from the cranial and sacral spinal cord segments all of the above is concerned with conserving and restoring energy H has ganglia near or within visceral effectors None 13. When a person is suddenly pushed from height by an attacker, his blood pressure and heart rate increase. Control through which centre of brain would normalise his condition? Cerebellum Medulla oblongata Pons Cerebrum None 14. All of the following are correct statements about non-medullated nerve fibres, except It is commonly found in autonomous and somatic neural system It is found in spinal and cranial nerves All the above It is enclosed by Schwennlls that do not form a myelin sheath around axons None 15. Read the statements about human neural system and find the wrong one. Somatic neural system is classified into sympathetic and parasympathetic systems CNS includes the brain and spinal cord. Autonomic neural system transmits impulses from CNS to involuntary organs and smooth muscles. PNS is divided into somatic and autonomic neural systems. None 16. Overall nerves slow down the body and divert energy to digestion and other basic housekeeping tasks; and nerves slow down housekeeping tasks and increase overall activity, in times of heightened awareness or excitement. Sympathetic; Parasympathetic Parasympathetic; Sympathetic Peripheral; Central Autonomic; Somatic None 17. Select the wrong paired match from the following. CNS - Site of information processing and control PNS - Transmission of impulses to and from the CNS ANS - Transmission of impulses from the CNS to voluntary organs SNS - Relays impulses from the CNS to skeletal muscles None 18. The direction of light striking the retina will be- Sensory nerves → → ganglionic cells → → bipolar neurons → → photosensory cells Photosensory cells → → ganglionic cells → → bipolar neurons → → sensory nerves Photosensory cells → → bipolar neurons → → ganglionic cells → →sensory nerves Sensory nerves → → bipolar neurons → → ganglionic cells → → Photosensory cells None 19. Choose the correct answer from the alternatives given.The cervical plexus supplies the: upper extremities abdominal regions head, neck, and shoulders head and shoulders None 20. The muscles responsible to move the eye ball are the 2 recti and 4 oblique muscles 4 recti and 4 olique muscles 2 recti and 2 oblique muscles 2 oblique and 4 recti muscles None Time's up Please Share This Share this content Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Leave a Reply Cancel replyCommentEnter your name or username to commentEnter your email address to commentEnter your website URL (optional) Save my name, email, and website in this browser for the next time I comment.
