👉 NEET Biology Examination
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Instruction
- Total 25 question
- Total Marks 100
- Each Question 4 marks
- Negative marking -1 for each wrong Question
NEET CONCEPT TEST -14 | BIOLOGY | STD-11 | EYE
1. Read the following statements and select the correct option . Statement A : Membranous discs of the outer segment of photoreceptor cells are arranged parallel to the retinal surface . Statement B : Parallel arrangement of the membranous discs increases the surface area .
( a ) Both statements A and B are correct and B is the correct explanation of A.
( b ) Both statements A and B are correct but B is not the correct explanation of statement A.
( c ) Statement A is correct but B is incorrect .
( d ) Both statements A and B are incorrect .
2. The canal of Schlemm is located at the junction of the
( a ) sclera and cornea ( b ) retina and ora serrata
( c ) blind spot and retina ( d ) blind spot and lens .
3. Read the following statements and select the correct one .
( a ) The fovea centralis comprises both rod and cone cells .
( b ) Ora serrata demarcates the sensitive part of retina from nonsensory part .
( c ) The external nuclear layer of retina consists of nerve fibres that form a network .
( d ) Sympathetic stimulation causes the circular muscles to contract and constrict the pupil .
4. Glaucoma is caused due to
( a ) blockage in canal of Schlemm
( b ) increase in the size of eye ball
( c ) opacity of lens
( d ) dryness of vitreous humour .
5. Parts A , B , C and D of the human eye are shown in the diagram . Select the option which gives correct identification along with its functions / characteristics .
( a ) C - Aqueous chamber - Reflects the light which does not pass through the lens .
( b ) D- Choroid - Its anterior part forms ciliary body .
( c ) A - Retina - Contains photoreceptors , i.e. rods and cones
( d ) B- Blind spot - Has only a few rods and cones .
6. Read the following paragraph and identify X Y and Z. The epithelium of the ciliary processes of the eye ball secrete X. The Y are attached to the ciliary body which surrounds the lens of the eye . The capsule , ligament and ciliary body together hold theZ in place .
X Y Z
( a ) vitreous humour smooth muscles lens
( b ) aqueous humour suspensory ligaments lens
( c ) aqueous humour capsules retina
( d ) vitreous humour suspensory ligament lens
7. Which of the following is the neural and sensory layer of the eyeball ?
( a ) Choroid ( b ) Retina ( c ) Lens ( d ) Sclera
8. Which of the following is not a part of internal plexiform layer of retina ?
( a ) Horizontal cells ( b ) Bipolar neurons
( C ) Ganglion cells ( d ) Amacrine cells
9. The optic nerve fibres arise from
( a ) optic disc ( b ) macula lutea
( C ) ora terminalis ( d ) synaptic zone .
10. A shallow depression present in the middle of macula lutea is
( a ) pupil ( b ) lens ( c ) fovea centralis ( d ) cornea .
11. Consider the following statements and select the correct option stating which ones are true ( T ) and which ones are false ( F ) .
( i ) Rods do not help in seeing colours .
( ii ) Cones are sensitive to bright light and give twilight vision .
( iii ) Visual violet is found in cones .
( iv ) Rods and cones are absent in optic disc . ( i ) ( ii ) ( iv )
( a ) F F T T ( b ) T T T F ( c ) T F T ( d ) T F T F
12. Select the mismatched pair .
( a ) Eyelid - Palpebrae
( b ) Nictitating membrane - Plica semilunaris
( c ) Meibomian gland - Tear gland
( d ) Glands of Moll - Sweat gland
12. Select the mismatched pair ,
( a ) Eyelid - Palpebrae
( b ) Nictitating membrane - Plica semilunaris
( c ) Meibomian gland - Tear gland
( d ) Glands of Moll - Sweat gland
13. How many accessory structures of the eye are present in the given box ? Eyebrows , Lens , Eyelid , Eyelash , Pupil , Conjunctiva , Lacrimal apparatus , Optic nerve
( a ) Nine ( b ) Six ( c ) Seven ( d ) Five
14. Which light is produced when the three types of cones are stimulated equally ?
( a ) Yellow ( b ) Red ( c ) White ( d ) Blue
15. The total number of rods and cones in the human retina are respectively
( a ) 125 million and 6.3 million ( b ) 6.3 million and 125 million
( c ) 100 million and 150 million ( d ) 150 million and 15.2 million .
16. Select the incorrect match with regards to correspondence between camera and eye .
( a ) Iris - Diaphragm ( b ) Pupil - Light hole
( c ) Choroid - Box ( d ) Eyelids - shutter
17. The correct pathway of tear flow is
( a ) superior canaliculi → lacrimal sac → inferior canaliculi → nasolacrimal duct inferior nasal meatus
( b ) superior canaliculi inferior canaliculi lacrimal sac → nasolacrimal duct inferior nasal meatus
( c ) superior canaliculi inferior nasal meatus → inferior canaliculi → lacrimal sac → nasolacrimal duct
( d ) superior canaliculi lacrimal sac → inferior nasal meatus → inferior canaliculi nasolacrimal duct .
18. Which one of the following statements is not correct ?
( a ) Retinal is the light absorbing portion of visual photo sensitive pigments .
( b ) In retina the rods have the photosensitive pigment rhodopsin while cones have three different photosen sitive pigments .
( c ) Retinal is a derivative of vitamin C.
( d ) Rhodopsin is the purplish red protein present in rods only .
19. Path taken in the eyeball by light rays .
( a ) Cornea → Conjunctiva → Aqueous humour Lens ( through pupil ) → Vitreous humour Retina
( b ) Conjunctiva → Cornea Lens ( through pupil ) → Aqueous humour Vitreous humour Retina
( c ) Conjunctiva → Cornea → Vitreous humour Lens ( through pupil ) → Aqueous humour - Retina
( d ) Conjunctiva → Cornea → Aqueous humour Lens ( through pupil ) → Vitreous humour Retina
20. Trichromatic theory of colour vision explains
( a ) that humans can see many colours
( b ) monocular vision in rabbit
( c ) red - green colourblindness is hereditary
( d ) cattle can visualise red colour and objects in two dimensions .
21. The disorder due to rough curvature of cornea or lens which can be corrected by the use of cylindrical glasses is
( a ) myopia ( b ) hypermetropia ( c ) squint ( d ) astigmatism .
22. Match the column I from column Il and select the correct option
Column I Column Il
A. Rhodopsin ( i ) Optic disc
B. Blind spot ( ii ) Synaptic zone
C. Plexiform layer ( iii ) Visual purple
D. Retinal gliocytes ( iv ) Macula lutea
E. Yellow spot ( v ) Cells of Muller
( a ) A - ( iii ) , B - ( i ) , C- ( ii ) , D - ( v ) , E- ( iv )
( b ) A - ( ii ) , B - ( v ) , C. ( iv ) , D - ( i ) , E- ( iii )
( c ) A - ( ii ) , B - ( i ) , C- ( iii ) , D - ( v ) , E- ( iv )
( d ) A- ( V ) , B - ( ii ) , C- ( iv ) , D- ( i ) , E- ( iii )
23. ' Adaptation of eyes in dark is due to
( a ) depletion of vision pigments in rods
( b ) depletion of vision pigments in cones
( c ) repletion of vision pigments in rods
( d ) repletion of vision pigments in cones .
24. Which of the following cells are associated with identification of colours in bright light ?
( a ) Cone cells ( b ) Rod cells ( c ) Glands of Zeis ( d ) Cells of Muller
25. The size of pupil is controlled by the
( a ) ciliary muscles ( b ) lens ( c ) cornea ( d ) iris .
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ANSWER KEY
1. ( a ) 2. ( a ) 3 . ( b ) 4 . ( a ) 5. ( c ) 6 . ( b ) 7. ( b ) 8. ( a ) 9 . ( a )
10. ( c ) 11. ( c ) 12. ( c ) 13. ( d ) 14. ( c ) 15. ( a ) 16. ( c ) 17. ( b )
18. ( c ) 19. ( d ) 20. ( a ) 21. ( D ) 24. ( a ) 25. ( d )
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