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. 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) 3 and 4 1 and 2 1 and 3 2 and 4 None 2. The _________ is central for planning the movements and blocking unsuitable behavior, and also has roles in memory. somatosensory cortex motor cortex visual cortex prefrontal cortex None 3. The direction of light striking the retina will be- Photosensory cells → → ganglionic cells → → bipolar neurons → → sensory nerves Sensory nerves → → ganglionic cells → → bipolar neurons → → photosensory cells Sensory nerves → → bipolar neurons → → ganglionic cells → → Photosensory cells Photosensory cells → → bipolar neurons → → ganglionic cells → →sensory nerves None 4. Select the wrong paired match from the following. SNS - Relays impulses from the CNS to skeletal muscles ANS - Transmission of impulses from the CNS to voluntary organs CNS - Site of information processing and control PNS - Transmission of impulses to and from the CNS None 5. Read the statements about human neural system and find the wrong one. 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. Somatic neural system is classified into sympathetic and parasympathetic systems None 6. Select the correct statement regarding the Schwann cells. Support muscle fibres Form basement membrane of epithelium. Found in Haversian system of bones Surround axon of myelinated nerve fibre None 7. The parasympathetic division of the autonomic nervous system: arises from the cranial and sacral spinal cord segments is concerned with conserving and restoring energy H has ganglia near or within visceral effectors all of the above None 8. 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 9. 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? Cerebrum Cerebellum Medulla oblongata Pons None 10. Which one of the following is not a refractive medium of the eye? Aqueous humour Lens Vitreous humour Pupil None 11. The peripheral nervous system transmits messages to and from the sense organs and is responsible for Reflex actions Autonomic actions Voluntary actions Involuntary actions None 12. 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. 2 and 3 are correct while 1 and 4 are wrong. 1, 2 and 3 are correct but 4 is wrong. 3 and 4 are correct while 2 and 3 are wrong. 1, 2 are correct but 3 and 4 are wrong. None 13. Find out the incorrect statement. Rods contain pigmented protein called rhodopsin which helps in dim light vision. Macula and cristae are present in the inner ear which function in hearing. The tongue contains gustatory receptors for sweet, salt, sour and bitter The organ of corti is present on the basilar membrane in the cochlea. None 14. The muscles responsible to move the eye ball are the 2 oblique and 4 recti muscles 2 recti and 4 oblique muscles 2 recti and 2 oblique muscles 4 recti and 4 olique muscles None 15. Which statement is incorrect regarding cerebral cortex? Large area of cortex neither clearly sensory nor motor It shows prominent fields Fibres of tract in cortex are covered with myelin sheath3 It consists of grey matter None 16. Choose the correct answer from the alternatives given.The cervical plexus supplies the: head and shoulders abdominal regions upper extremities head, neck, and shoulders None 17. Which of the following is not a characteristic of the human sympathetic nervous system? Increases heart beat Prepares the person for fight or flight Is a craniosacral division of the autonomic nervous system Has ganglia near the spinal cord None 18. Select the correct option:Blood-brain barrier in adults has ........... junctions between cells. Gap Adhering Occluding Tight None 19. 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 20. 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, c a, b, d b, c, d 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.
