Biology Class 11

Biology Class 11th Chapter 21 mcqs

Neural Control and Coordination Objective Questions

  1. Which neuroglia cells produce a fatty insulating material called myelin?

(a) Satellite cells

(b) Schwann cells

(c) Both (A) and (B)

(d) Neither (A) nor (B)

Answer: (b) Schwann cells

  1. Which layer is in contact with brain tissues?

(a) Piamater

(b) Arachnoid

(c) Duramater

(d) Piamater and Arachnoid

Answer: (a) Piamater

  1. The thin and convoluted outer layer of gray matter that covers the cerebral hemispheres is

(a) Medulla oblongata

(b) Thalamus

(c) Cerebral cortex

(d) Meninges

Answer: (c) Cerebral cortex

  1. Find the odd one.

(a) Schwann cells

(b) Nissl s granules

(c) nephrons

(d) synaptic knob

Answer: (c) nephrons

  1. Select the correct statement from the ones given below

(a) Cocaine is given to patients after surgery as it stimulates recovery

(b) Barbiturates when given to criminals make them tell the truth

(c) Morphine is often given to persons who have undergone surgery as a pain killer

(d) Chewing tobacco lowers blood pressure and heart rate

Answer: (c) Morphine is often given to persons who have undergone surgery as a pain killer

  1. Which one of the followings is the function of parasympathetic nervous system?

(a) Stimulates oil and sweat glands in the skin

(b) Pupil constriction

(c) Acceleration of heart beat

(d) Contraction of hair muscles

Answer: (b) Pupil constriction

  1. During resting state, fluid outside axon contains

(a) low concentration of K+

(b) low concentration of Na+

(c) low concentration of Cl–

(d) high concentration of Cl–

Answer: (a) low concentration of K+

  1. The basic cyclic pattern of inspiration and expiration are established by a respiratory center within the ______.

(a) Cerebellum

(b) Medulla oblongata

(c) Cerebral cortex

(d) Thalamus

Answer: (b) Medulla oblongata

  1. The cutaneous plexus and the papillary plexus consist of

(a) Specialized cells for cutaneous sensations

(b) A network of arteries to provide dermal supply

(c) A network of nerves to provide dermal sensation

(d) Gland cells that release cutaneous secretions

Answer: (c) A network of nerves to provide dermal sensation

  1. The generation of excitation-contraction coupling involves all the following events except

(a) Generation of end-plate potential

(b) Release of calcium from troponin

(c) Formation of cross-linkages between actin and myosin

(d) Hydrolysis of ATP to ADP

Answer: (b) Release of calcium from troponin

  1. Which portion of the brain is responsible for various emotions such as pleasure, fear, and happiness?

(a) Thalamus

(b) Reticular formation

(c) Hypothalamus

(d) Limbic system

Answer: (d) Limbic system

  1. Vestibular apparatus is made up of three semi circular canals. These canals lies at ____ degree angle to each other.

(a) 30

(b) 45

(c) 60

(d) 90

Answer: (d) 90

  1. At a neuromuscular junction, synaptic vesicles discharge ______.

(a) Acetylcholine

(b) Epinephrine

(c) Adrenaline

(d) None of these

Answer: (a) Acetylcholine

  1. There are ______ pairs of cranial nerves arising from the brain.

(a) 8

(b) 12

(c) 18

(d) 25

Answer: (b) 12

  1. When a neuron is in resting state i.e. not conducting any impulse, the axonal membrane is

(a) Comparatively more permeable to K+ ions and nearly impermeable to Na+ ions

(b) Comparatively more permeable to Na+ ions and nearly impermeable to K+ ions

(c) Equally permeable to both Na+ and K+ ions

(d) Impermeable to both Na+ and K+ ions

Answer: (a) Comparatively more permeable to K+ ions and nearly impermeable to Na+ ions

  1. Which one of the following is the correct statement regarding the particular psychotropic drug specified?

(a) Barbiturates cause relaxation and temporary euphoria

(b) Hashish causes after thought perceptions and hallucinations

(c) Opium stimulates nervous system and causes hallucinations

(d) Morphine leads to delusions and disturbed emotions

Answer: (b) Hashish causes after thought perceptions and hallucinations

  1. The function of vagus nerve innervating the heart is to

(a) Initiate the heart beat

(b) Reduce the heart beat

(c) Accelerate the heart beat

(d) Maintain constant heart beat

Answer: (b) Reduce the heart beat

  1. Which of the following nerves is the largest of all the cranial nerves?

(a) Abducens nerve

(b) Oculomotor nerve

(c) Olfactory nerve

(d) Trigeminal nerve

Answer: (d) Trigeminal nerve

  1. Which of the following is not related to the autonomic nervous system?

(a) Peristalsis

(b) Digestion

(c) Excretion

(d) Memory and learning

Answer: (d) Memory and learning

  1. Functions of smooth muscles, cardiac muscles, organs, and glands are regulated by ______ system.

(a) Parasympathetic

(b) Sympathetic

(c) Central nervous

(d) Autonomic

Answer: (d) Autonomic

11th biology chapter 21, तंत्रिकीय नियंत्रण एवं समन्वय, 11th biology chapterwise objective questions in english medium, 11th biology chapterwise objective questions, कक्षा 11 जीवविज्ञान, class 11 biology chapter 21 notes pdf download, biology class 11 chapter 21 ncert solutions,  Science Sangrah Official, science sangrah class 11 biology, class 11 biology chapter 21 important questions, class 11th biology chapter 21 ncert solutions, class 11 biology chapter 21 notes pdf, class 11 biology chapter 21 question answers, अध्याय-21 तंत्रिकीय नियंत्रण एवं समन्वय, biology chapter 21 class 11, Chapter-21 Neural Control, biology chapter 21 class 11 ncert solutions, biology chapter 21 class 11 notes, biology class 11 chapter 21 question answers, class 11th biology chapter 21 ncert in hindi, Chapter-20 Locomotion and Movement, class 11th biology chapter 21, class 11th biology chapter 21 notes, class 11th biology chapter 21 ncert in hindi

Leave a Reply

Your email address will not be published. Required fields are marked *