Bio*Nervous System and Sense Organs

BIO•NERVOUS SYSTEM AND SENSE ORGANS
A•Choose the correct.(1marks)
1•The first ever nervous system originates in— (a) Planeria ; (b) Paramoecium ; (c) Sponge ; (d) Amoeba. Sponge
2•The other name of Neurocyton is— (a) Nucleus (b)Soma ; (c) Neuron ; (d) Nissl granules.
3•The rate of transmitting nerve impulse in human body is— (a) 10-15 meter/sec ; (b) 20-30 meter/sec ; (c) Centron (d) Neuroglia.
4•Number of Cranial nerve present in the peripheral nervous system are- (a)10 pairs ; (b) 12 pairs ; (c) 15 pairs ; (dj 31 pairs
5•Nissl granules are present in— (a) Axoplasm : (b) Cytoplasm ; (c) Sarcoplasm : (d) Neuroplasm
6•Spinal nerve present in Peripheral nervous system is— (a) 10 pairs ; (b) 12 pairs ; (c) 15 pairs ; (d) 31 pairs.
7•Neurofibril is present in- (a) Neurocyton ; (b) Neuroglia : (c)Nephron ; (d) Nissl granules
8•Nerve consists of— (a) Nephron ; (b) Neuron : (c) Neuroglia : (d)Corpuscle.
9•Neuron covered by Myelin Sheath is called-(a) Neurofibril; (b) Neurocyton ; (c) Neuroglia ; (d)Medullated Neuron.
10•Neuroplasm is — (a) Cytoplasm of Neuroglia ; (b) Cytoplasm of Muscle Cell ; (c) Cytoplasm of Neuron ; {d) Cytoplasm of Glial Cell.
11•Nerve impulse receptors act with— (a) Sensory Nerve ; (b) Motor Nerve ; (c) Mixed Nerve (d)Medullary Nerve.
12•Neuroglia originates from— (a) Microglia ; (b) Astrocyte ; (c) Spongioblast ; (d) Ganglia.
13•The nerve which transmits impulse from CNS to muscle is— (a) Afferent Nerve ; (b) Efferent Nerve ; (c) Mixed Nerve (d)Medullary Nerve.
14•Acetyl choline is— (a) Synaptic Knob: (b) Neurohormone; (c) Synaptic cleft ; (d) Neurohumour.
15•The membrane that covers brain is— (a) Pleura ; (b) Mesentry ; (c) Meninges ; (d) Plasmalemma.
16•The part of Forebrain which controls vision is— (a) Frontal lobe ; (b) Occipital lobe : (c) Temporal lobe ; (d) Parietal lobe.
17•The liquid which fills ventricles of brain is— (a) Perilymph ; (b) Endolymph ; Cc) Plasma : (d) CSF.
18•Two parts of Cerebellum are connected with— (a) Vermis : (b) Purkinje fibre ; (c) Corpus callosum ; (d) Corpus Striatum.
19•The foramen through which Medulla oblongata is connected with Spinal (a) Foramen of Monro ; (b) Aqueduct of Sylvius ; (c). Foramen Magnum ; (d) Vermis.
20•Eye bail connects with eye-socket with— (a) 4 eye muscles ; (b) 5 eye muscles : (c) 6 eye muscles : (d) 7 eye muscles
21•The enzyme present in tear (a) Amylase : (b) Lacryzyme ; (c)Lysozyme ; (d) Bacteriozyme
22•Otolith is present in— (a) Incus ; (b) Eustachian tube : (c) Cochlea ; (d) Middle ear.
23•The connection between Middle ear and Pharynx is— (a) Hensen tube (b) Eustachian tube ; (c) Semi circular tube : (d) None of these.
24•Tastebud present on human tongue— (a) About 10,000 (b) About 15,000: (c)About 20,OOO : (d) About 25,000.
25•The region of human brain that reoulates "body balance" is— (a) Cerebrum ; b)Cerebellum ; (c) Thalamus ; (d) Medulla oblongata. (MP10,12)
26•The physiological gap present between two neurons is called— (aj Synapse (b) Nerve ganglion ; (c) Thalamus ; (d) Vermis.
27•Papilla of Tongue consists of about— (a) 8-10 tastebuds ; (b) 15-20 tastebuds ; (c) 25-30 tastebuds : (d) 100 tastebuds
28•Number of Cone cell present on human retina—(a)15-28 lakh (b)40-43 lakh (c)63-64 lakh ; (d) 75-76 lakh.
29•Which of the following is associated with Schwann cell? (a) Dendrite (b) Axon (c) Resin : (d) Nicotine.(MP09).
30•The structure of eye lens is— a.Convex (b) Concave ; (c) Biconcave ; (d) Biconvex.
31•Which part of the brain performs thermoregulation? (a) Cerebrum ; (b) Cerebellum ; (c) Hypothalamus ; (d) Pons.
32•Where is sclera located ? (a) Tongue ; (b) Skin ; (c) Eye ; (d) Ear.
B•Fill in the blanks : (1 mark).
1•The animal on which first nervous system originates is ......
2•The basal cell of nervous system is ......
3•Nerve is composed of ......
4• In peripheral nervous system ......pair of spinal nerve is present
5•Neurocyton is called........
6•........part of cerebrum controls vision.
7•........enzyme is present in tear. pan ofbrain.
8•Body balance is controlled by ........ Part of brain.
9•Semicircular canal controls ........
10•The physiological gap between two neurons is ........
11•........cell of eye produces colour image.
12•Tongue papilla consists of........number of tastebud. 
13•........tube connects between middle ear and buccal cavity.
14•In human brain .......(volume) of CSF is present.
15•Endolymph is present in.......
16• The part of human eye-ball which is photosensitive is ...........(MP11)
17•The three layered membranous covering of human brain is collectively called ............
C•Answer in one sentence(1mark)
1•Name one multicellular animal which has no nervous system.
2•Name the group of animals whose central nervous system is hollow.
3•Which sense organ of human body is the largest?
4•What is the full form of ANS ?
5•What are the main characteristics of nervous system?
6•What is the full form of CSF ?
7•Name one cranial nerve.
8•Name the protective covering which present encircling central nervous system (CNS) of vertebrates. (MP12)
9•Name the physiological gap between two neurons.
10•Name the folding of Cerebrum.
11•Name the nerve connectives of two cerebrums.
12•Name the nerve connectives of two cerebellums.
13•Name the eye layer on which image is produced.
14•Name the bird which has binocular vision.
15•What is meninges?
16•Excepting tongue where is also tastebud present?
17•Where is Otolith aparatus present'?
18•What is the other name of Neurolemma?
19•Where is sclera present ?
20•Which bones of the ear help directly in hearing?
21•How much volume of CSF is present in human being?
22•What is the function of Corti aparatus?
23•How many nerves originate from spinal cord?
24•What is the name Of pressure receptor of the skin?
25•Which cell is present in Macula lutea?
26•In which part of human ear is cochlea located? (MP09)
27•By which part of the tongue do we feel bitter taste? (MP09)
28•What is the near point of vision of human eye?
29•Name the cell which takes smell.
30•What is the end pan of Spinal cord?
31•What is the structural and functional unit of Nervous System?
32•What is ganglion? (MP10)
33•Name a sense organ that maintains balance in humans.
34•One function of human ear is hearing. What is the other? (MP09)
35•Withdrawal of finger from a hot object is an example of which type of reflex?
36•How do sound waves reach the internal ear from the ear drum? (MP07)
E•Answer in two or three sentences : (2 marks)
1•What is nervous system
2•What is Neuron?
3•What are the composing organs of nervous system?
4•What is Neurogiia?
5•What is stimular?
6•What is impulse?
7•What is afferent nerve?
8•What is nerve?
9•What is Nerve ganglion?
10•What is Neurohurnour?
11•What is mixed nerve?
12•What is reflex arc?
13•What is brain?
14•What is Synapse?
15•What is Sense Organ?
16•What is taste bud?
17•What is myopia?
18•How does sound wave travel through tympanic membrane to internal ear?
19•What is binocular vision?
20•Write one structural and one functional differences between axon and dendron. (MP08)
21•What is the function of CSF?
22•Write two differences of brain and spinal cord.
23•What is the relation between Neuron and Neuroglia?
24•Write the structure of Neurocyton.
25•Write four refractive media of eye.
26•Where is the vestibular organ placed and write its function.
27•Write the function of different parts of reflex arc.
28•Write the function of different parts of forebrain.
29•Write the function of different parts of hind brain.
30•Write the function of different parts of midbrain.
31•What is the structure of internal ear?
32•Write two functions of human internal ear. MP09
33•How do we receive smell .
34•What is reflex action? MP10
35•Mention two differences between cerebrum and cerebellum.
36•How do sound waves reach the internal ear from the ear drum? MP07
37•What is yellow spot ? Mention its function. MP12
E•Ans. in 3/5 sent. (3 marks)
1•Describe the Structure of Neuron.
2•Classify nervous system.
3•Briefly describe the structure of human brain?
4•What is conditional and unconditional reflex action?
5•What is nerve ganglion? State its different types.
6•Discuss the roles of nose and skin as sense organs of man. MP08
7•What are the different functions of ear?
8•What is synapse? Mention two differences between afferent and efferent nerves.
9•Write the differences between Rod and Cone Cells.
10•Write the structure of the organ of smell.
11•Write two differences between blind spot and yellow spot.
12•Write the differences between aqueous humour and vitreous humour.
13•Write differences of Brain and Spinal cord.
14•Write characteristics of mixed nerve.
15•How does impulse transmit through synapse?
16•Write differences between conditional and unconditional reflex action.
17•Write the structure of internal ear.
18•Write the structure of human eye.
19•Write the location of retina and sclera in human eye and mention one function of each of them. MP07
20•How does reflex action transmit nerve impulse?
21•Describe the relation between neuron and nerve.
22•Define ganglia.
23•Discuss how the tongue helps in sensation of taste.
24•Write the function Of Nervous System.
25•Write any one function of each cerebrum, cerebellum and medulla, oblongata.MP09
26•Describe in brief the structure of axon of nerve cell.MP10
27•Mention one function each of tympanum, cochlea and semi-circular canals of human ear.MP11
28•What is the name of the fluid present in the central canal of Spinal cord.Write two functions of spinal cord.MP12
29•Mention two structural and one functional differences between dendron and axon. MP12
F•Answer questions : (5 marks)
1•What is nervous system? State its functions.
2•Write the structure of Neuron and state the function of each part.
3•Write five differences between cellbody and body cell.
4•What is nerve? Differentiate nerve according to its work.
5•What is synapse? State its types and function.
6•What is reflex action? Whar are its different pans?
7•What are the functions of different parts of brain?
8•Write the Function and structure of eye ball.
9•Write the structure and function of skin.
10•What is spinal cord? Write the functions of spinal cord.
11•What is nerve? Write one characteristic features of each afferent and efferent nerves. Mention the function of cerebrum.MP11
12•Write two functions of nervous system. What is synapse? What is meninges?
13•What is reflex arc? Briefly describe different types of Reflex action with example.
14•What is the difference between ganglion and nerve fibre ? Write two functions of lacrimal gland. Mention the function of skin as a sense organ.MP12
G•Ans. Questions (8 marks)
1•Draw a diagram of a typical neuron and label the following parts in the diagram : nucleus, endbrush, axon, dendron, myelin sheath and node of Ranvier.MP12
2•Draw a diagram of simple reflex arc and label receptor organ, effector organ, sensory neuron and motor neuron. Indicate the direction of flow of impulse with arrows. MP08
3•Draw a neat diagram of internal ear and label any six of its parts.
4•Draw a neat diagram of a vertical section of human eye and label the following parts of the diagram : cornea, lens, sclera, retina, pupil and yellow spot. (MP10)
OR•Draw a diagram of human eye and label the following parts : lens, retina, cornea, sclera, blind spot and aqueous humour.