👉 NEET Biology Examination
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Instruction
- Total 15 question
- Total Marks 60
- Each Question 4 marks
- Negative marking -1 for each wrong Question
NEET CONCEPT TEST -7 | BIOLOGY | STD 11 | CHAPTER -21
1. Which of the following are the three initial developmental regions of the brain
( a ) Telencephalon , prosencephalon , rhombencephalon
( b ) Rhombencephalon , prosencephalon , mesencephalon
( c ) Metencephalon , myelencephalon , prosencephalon
( d ) Prosencephalon , diencephalon , mesencephalon
2. Which one of the following shows the correct sequential order of vertebrae in the vertebral column of human beings ?
( a ) Cervical - lumbar - thoracic - sacral - coccygeal
( b ) Cervical - thoracic - sacral - lumbar - coccygeal
( c ) Cervical - sacral - thoracic - lumbar - coccygeal
( d ) Cervical - thoracic - lumbar - sacral - coccygeal
3. Human cranium comprises of
( a ) eight bones of which two are paired
( b ) fourteen bones of which six are paired
( c ) ten bones of which two are paired
( d ) twelve bones of which four are paired .
4. Read the following statements and choose the correct option .
(i) Saltatory conduction is when impulse jumps from one node to another over myelin sheath of myelinated neurons .
( ii ) Sympathetic stimulation causes constriction of pupil .
( iii ) The semicircular canal , helicotrema and saccule are structures of equilibrium .
( iv ) Cerebrospinal fluid decreases the weight of brain as it gives buoyancy
( a ) ( i ) -T , ( ii ) -T , ( ii ) -F , ( iv ) -F ( b ) ( i ) -T , ( ii ) -F . ( iii ) -F . ( iv ) -T
( c ) ( i ) -F , ( ii -F , ( iii ) -F , ( iv ) -T ( d ) ( i ) -T , ( ii ) -T , ( iii ) -F , ( iv ) -T
5. Sam once suffered a severe allergic reaction to a bee sting . The sting caused him to suffer a near - fatal drop in blood pressure called anaphylactic shock . Now he carries a kit containing a syringe of which he can inject to speed up his heart if he reacts to a bee sting .
( a ) insulin ( b ) melatonin ( c ) testosterone ( d ) epinephrine
6. If in a pregnant woman having prolonged labour pains , the child - birth has to be hastened . It is advisable to administer a hormone that can
( a ) activate the smooth muscles ( b ) increase the metabolic rate
( c ) release glucose into the blood ( d ) stimulate the ovary
7. Given below is an incomplete table about certain hormones , their source glands and one major effect of each on the body of humans . Select the option that correctly fills the blanks A , B and C
( b ) Rhombencephalon , prosencephalon , mesencephalon
( c ) Metencephalon , myelencephalon , prosencephalon
( d ) Prosencephalon , diencephalon , mesencephalon
2. Which one of the following shows the correct sequential order of vertebrae in the vertebral column of human beings ?
( a ) Cervical - lumbar - thoracic - sacral - coccygeal
( b ) Cervical - thoracic - sacral - lumbar - coccygeal
( c ) Cervical - sacral - thoracic - lumbar - coccygeal
( d ) Cervical - thoracic - lumbar - sacral - coccygeal
3. Human cranium comprises of
( a ) eight bones of which two are paired
( b ) fourteen bones of which six are paired
( c ) ten bones of which two are paired
( d ) twelve bones of which four are paired .
4. Read the following statements and choose the correct option .
(i) Saltatory conduction is when impulse jumps from one node to another over myelin sheath of myelinated neurons .
( ii ) Sympathetic stimulation causes constriction of pupil .
( iii ) The semicircular canal , helicotrema and saccule are structures of equilibrium .
( iv ) Cerebrospinal fluid decreases the weight of brain as it gives buoyancy
( a ) ( i ) -T , ( ii ) -T , ( ii ) -F , ( iv ) -F ( b ) ( i ) -T , ( ii ) -F . ( iii ) -F . ( iv ) -T
( c ) ( i ) -F , ( ii -F , ( iii ) -F , ( iv ) -T ( d ) ( i ) -T , ( ii ) -T , ( iii ) -F , ( iv ) -T
5. Sam once suffered a severe allergic reaction to a bee sting . The sting caused him to suffer a near - fatal drop in blood pressure called anaphylactic shock . Now he carries a kit containing a syringe of which he can inject to speed up his heart if he reacts to a bee sting .
( a ) insulin ( b ) melatonin ( c ) testosterone ( d ) epinephrine
6. If in a pregnant woman having prolonged labour pains , the child - birth has to be hastened . It is advisable to administer a hormone that can
( a ) activate the smooth muscles ( b ) increase the metabolic rate
( c ) release glucose into the blood ( d ) stimulate the ovary
7. Given below is an incomplete table about certain hormones , their source glands and one major effect of each on the body of humans . Select the option that correctly fills the blanks A , B and C
Glands Secretion Effect on the body
A Estrogen Maintenance of secondary sexual characters
A Estrogen Maintenance of secondary sexual characters
Alpha cells of Islets B Raises blood sugar level
of Langerhans
Anterior pituitary C Oversecretion leads to
of Langerhans
Anterior pituitary C Oversecretion leads to
gigantism
A B C
( a ) Placenta Glucagon Calcitonin
( b ) Ovary Glucagon Growth hormone
( c ) Placenta Insulin Vasopressin
( d ) Ovary Insulin Calcitonin
8. Which of the labelled bones ( A - D ) in the given figure depicts a metacarpal ?
( a ) B ( b ) A ( c ) D ( d ) C
9. Match the column I with column Il and select the correct option from given codes .
Column i Column ii
( Area ) ( Number of bones )
A. Sternum ( i ) 14
B. Ribs ( ii ) 1
C. Coxa ( iii ) 24
D. Face ( iv ) 3
( a ) A- ( ii ) , B- ( iii ) , C- ( iv ) , D - ( i )
( b ) A- ( ii ) , B -( iii ) , C - ( i ) D- ( iv )
( c ) A- ( ii ) , B - ( i ) . C - ( iii ) , D - ( iv )
( d ) A- ( iv ) , B - (iii ) , C - ( ii ) , D- ( i )
10. Read the following statements and select the correct option .
( a ) Axon contains neurofibrils and Nissl's granules .
( b ) In non - myelinated nerve fibres , Schwann cells form myelin sheath .
( c )) Afferent neurons are motor in nature and conducts impulses from CNS to effectors .
( d ) Purkinje cells are neurons with flask shaped cytons .
11. When sound waves strike pinna and vibration reaches organ of Corti ( sensory ridge ) on basilar membrane , then
( a ) the receptor cells depolarise and open voltage - gated ion channels which transduce signal to auditory nerve
( b ) receptor cells bend accordingly and transmit impulses to the auditory nerve ( c ) sensory hair bend and stimulate the sensory cells to generate the impulse of hearing which is carried to brain by auditory nerve
( d ) sensory hair undergo bending and sensory cells on tectorial membrane get stimulated , creating impulse .
12. Read the given statements that define functions of a particular hormone .
( i )Stimulates muscular growth of facial and axillary hairs , aggressiveness , low pitch of voice , etc.
( ii ) Stimulates spermatogenesis .
( ii ) Produce anabolic effect on protein and carbohydrate metabolism .
( IV ) The Leydig's cells or interstitial cells secrete this hormone under the influence of LH .
Which of the following hormones is referred here ?
( a ) FSH ( b ) progesterone ( c ) Melatonin ( d ) Androgen
13. Which of the following is not the function of glial cells ?
( a ) Receiving and conducting electrochemical signals
( b ) Metabolic support to neurons
( c ) Removing debris after the death of a neuron
( d ) Produce insulation sheath around axons
14. Which one of the following statements is correct ?
( a ) Endocrine glands regulate neural activity , but not vice versa .
( b ) Neurons regulate endocrine activity , but not vice versa .
( c ) Endocrine glands regulate neural activity , and neural system regulates endocrine glands .
( d ) Neither hormones control neural activity nor the neurons control endocrine activity .
15. The increased blood pressure decrease in the water content of urine and promotion of contraction of smooth muscles is brought about respectively by
( a ) oxytocin and ACTH ( b ) vasopressin and ACTH
( c ) vasopressin and ADH ( d ) vasopressin and oxytocin .
A B C
( a ) Placenta Glucagon Calcitonin
( b ) Ovary Glucagon Growth hormone
( c ) Placenta Insulin Vasopressin
( d ) Ovary Insulin Calcitonin
8. Which of the labelled bones ( A - D ) in the given figure depicts a metacarpal ?
( a ) B ( b ) A ( c ) D ( d ) C
9. Match the column I with column Il and select the correct option from given codes .
Column i Column ii
( Area ) ( Number of bones )
A. Sternum ( i ) 14
B. Ribs ( ii ) 1
C. Coxa ( iii ) 24
D. Face ( iv ) 3
( a ) A- ( ii ) , B- ( iii ) , C- ( iv ) , D - ( i )
( b ) A- ( ii ) , B -( iii ) , C - ( i ) D- ( iv )
( c ) A- ( ii ) , B - ( i ) . C - ( iii ) , D - ( iv )
( d ) A- ( iv ) , B - (iii ) , C - ( ii ) , D- ( i )
10. Read the following statements and select the correct option .
( a ) Axon contains neurofibrils and Nissl's granules .
( b ) In non - myelinated nerve fibres , Schwann cells form myelin sheath .
( c )) Afferent neurons are motor in nature and conducts impulses from CNS to effectors .
( d ) Purkinje cells are neurons with flask shaped cytons .
11. When sound waves strike pinna and vibration reaches organ of Corti ( sensory ridge ) on basilar membrane , then
( a ) the receptor cells depolarise and open voltage - gated ion channels which transduce signal to auditory nerve
( b ) receptor cells bend accordingly and transmit impulses to the auditory nerve ( c ) sensory hair bend and stimulate the sensory cells to generate the impulse of hearing which is carried to brain by auditory nerve
( d ) sensory hair undergo bending and sensory cells on tectorial membrane get stimulated , creating impulse .
12. Read the given statements that define functions of a particular hormone .
( i )Stimulates muscular growth of facial and axillary hairs , aggressiveness , low pitch of voice , etc.
( ii ) Stimulates spermatogenesis .
( ii ) Produce anabolic effect on protein and carbohydrate metabolism .
( IV ) The Leydig's cells or interstitial cells secrete this hormone under the influence of LH .
Which of the following hormones is referred here ?
( a ) FSH ( b ) progesterone ( c ) Melatonin ( d ) Androgen
13. Which of the following is not the function of glial cells ?
( a ) Receiving and conducting electrochemical signals
( b ) Metabolic support to neurons
( c ) Removing debris after the death of a neuron
( d ) Produce insulation sheath around axons
14. Which one of the following statements is correct ?
( a ) Endocrine glands regulate neural activity , but not vice versa .
( b ) Neurons regulate endocrine activity , but not vice versa .
( c ) Endocrine glands regulate neural activity , and neural system regulates endocrine glands .
( d ) Neither hormones control neural activity nor the neurons control endocrine activity .
15. The increased blood pressure decrease in the water content of urine and promotion of contraction of smooth muscles is brought about respectively by
( a ) oxytocin and ACTH ( b ) vasopressin and ACTH
( c ) vasopressin and ADH ( d ) vasopressin and oxytocin .
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ANSWER KEY
1. ( b ) 2. ( d ) 3. ( a ) 4. ( b ) 5. ( d ) 6. ( a ) 7. ( b ) 8. ( c ) 9. ( a ) 10. ( d ) 11. ( c ) 12. ( d ) 13. ( a ) 14. ( b ) 15. ( d )
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