MCQ Questions for Class 11 Biology: Ch 21 Neural Control and Coordination

MCQ Questions for Class 11 Biology: Ch 21 Neural Control and Coordination

1. During the transmission of nerve impulse through a nerve fibre, the potential on the inner side of the plasma membrane has which type of electric change?
(a) First positive, then negative and continue to be positive
(b) First negative, then positive and continue to be positive.
(c) First positive, then negative and again back to positive
(d) First negative, then positive and again back to negative
► (d) First negative, then positive and again back to negative

2. Through which aperture the spinal cord passes out of skull :-
(a) Foramen of monro
(b) Foramen of paninze
(c) Foramen of magnum
(d) None of the above
► (c) Foramen of magnum

3. Night blindness is caused due to 
(a) Hypermatropia   
(b) Myopia
(c) Defective cornea
(d) Deficiency of rhodopsin in rods
► (d) Deficiency of rhodopsin in rods

4. Cerebellum is concerned with
(a) Co-ordination of muscular movement
(b) Memory
(c) Vision
(d) Reflex action
► (a) Co-ordination of muscular movement

5. Injury to vagus nerve in humans is not likely to affect:
(a) tongue movements
(b) gastrointestinal movements
(c) pancreatic secretion
(d) cardiac movements
► (a) tongue movements

6. Cavity in spinal cord is called:
(a) Enterocoel
(b) Blastocoel
(c) Schizocoel
(d) Neurocoel
► (d) Neurocoel

7. Piamater is:
(a) Inner most meninge
(b) Middle meninge
(c) Outer meninge
(d) None of the above
► (a) Inner most meninge

8. The gray matter differs from white matter in the :-
(a) Absence of axons
(b) Absence of nurilemma
(c) Presence of myelin sheath
(d) Absence of myelin sheath
► (d) Absence of myelin sheath

9. In the process of eye donation, a particular part of a dead man’s eye is stored and grafted on another person’s eye to restore vision. That donated part of the eye is:
(a) Retina
(b) Lens
(c) Cornea
(d) Sclera
► (c) Cornea

10. Injury localised to the hypothalamus would most likely disrupt
(a) Short term memory
(b) Coordination during locomotion
(c) Executive function, such as decision making 
(d) Regulation of body temperature
► (d) Regulation of body temperature

11. Outer most covering of brain is called:
(a) Choroid
(b) Duramater
(c) Piamater
(d) Arachnoid
► (b) Duramater

12. Four healthy people in their twenties got involved in injuries resulting in damage and death of a few cells of the following. Which of the cells are least likely to be replaced by new cells? [2005]
(a) Liver cells
(b) Neurons
(c) Malpighian layer of the skin
(d) Osteocytes
► (b) Neurons

13. Lower part of filum terminale has only:
(a) Piamater
(b) Duramater
(c) Arachnoid
(d) All of the above
► (a) Piamater

14. Which part of the brain regulates the body temperature, hunger and water balance :-
(a) Hypothalamus
(b) Infundibulum
(c) Medulla oblongata
(d) Pons veroli
► (a) Hypothalamus

15. If cerebral hemispheres of rabbit are removed, then it will :-
(a) Die immediately
(b) Die after some time
(c) Behave normally
(d) Stop feeding
► (b) Die after some time

16. Which part of brain controls emotions like love, anger and pleasure –
(a) M.O.
(b) Hypothalamus
(c) Cerebrum
(d) Cerebellum
► (b) Hypothalamus

17. Hyalocytes cells occurs in
(a) Aqueous humor
(b) Vitreous humor
(c) Both of the above
(d) None of the above
►  (b) Vitreous humor

18. In the resting state of the neural membrane, diffusion due to concentration gradients, if allowed, would drive:
(a) K+ into the cell
(b) K+ and Na+ out of the cell
(c) Na+ into the cell
(d) Na+ out of the cell
► (c) Na+ into the cell

19. Number of cranial nerves in human:
(a) 12 Cranial Nerves
(b) 24 Cranial Nerves
(c) 11 Cranial Nerves
(d) 29 Cranial Nerves
► (a) 12 Cranial Nerves

20. The focal length of the lens in eye is controlled by 
(a) Vitreous humor
(b) Cillary muscles
(c) Iris muscles
(d) Pupil
► (b) Cillary muscles

21. The most abundant intracellular cation is:
(a) Ca++
(b) H+
(c) K+
(d) Na+
► (c) K+

22. During night when the intensity of light is low, it is detected by 
(a) Rods
(b) Cones
(c) Both
(d) Crystalline lens
► (a) Rods

23. Weight of spinal cord is:
(a) 100 gm.
(b) 1400 gm.
(c) 150 gm.
(d) 35 gm.
► (d) 35 gm.

24. Iodopsin is related with 
(a) Brain
(b) Spinal cord
(c) Cones
(d) Kidney
► (c) Cones

25. Thermo regulatory center in human brain is :-
(a) Pituitary
(b) Diencephalon
(c) Hypothalamus
(d) None of the above
► (c) Hypothalamus

26. Meiboniam gland  are associated with
(a) Eyes
(b) Ears
(c) Reproductive organ
(d) Skin
► (a) Eyes

27. Aperture of an eye can be changed by 
(a) Aquous humor
(b) Vitreous humor 
(c) Ciliary muscles
(d) Iris
► (d) Iris

28. Septum lucidum is part of the:
(a) Pseudocoel
(b) Metacoel
(c) Diocoel
(d) Rhinocoel
► (a) Pseudocoel

29. If the source of bright light in front of eye suddenly become bright  
(a) Focus of lens changes
(b) Pupil contract
(c) Vitreous humor becomes liquid like
(d) Retina blood supply is cut-off
► (a) Focus of lens changes

30. Ciliary muscles are found in 
(a) Junction of choroids and iris in eye ball
(b) Inside larynx toregulate tension in eye ball
(c) Between ribs to assist in breathing movement
(d) At base of cilia in ciliated epithelium
► (a) Junction of choroids and iris in eye ball

31. Which one of the following diseases in man belongs to the same category as haemophilia 
(a) Hyper matropia           
(b) Rabies
(c) Night blindness
(d) Colour blindness
► (d) Colour blindness

32. Which one of the following menix is present only in mammalian brain:
(a) Duramater
(b) Arachnoid
(c) Piamater
(d) None of the above
► (b) Arachnoid
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