👉 NEET Biology Examination
👉 NEET Biology Tips
👉 NEET Biology Study Material
👉 UGC Net Study Material
Instruction
- Total 20 question
- Total Marks 80
- Each Question 4 marks
- Negative marking -1 for each wrong Question
NEET CONCEPT TEST -8 | BIOLOGY | STD 12 | MANISH MEVADA
1. The germ pores in the pollen grain are the regions
( a ) which are made up of lignin and suberin
( b ) that can withstand high temperature and strong acids and alkalies
( c ) which lack sporopollenin
( d ) through which sperms are directly released into the female gametophyte .
2. In garden pea , round shape of seeds is dominant over wrinkled shape . A pea plant heterozygous for round shape of seed is selfed and 1600 seeds produced during the cross are subsequently germinated . How many seedlings would have the parental phenotype ?
( a ) 400 ( b ) 1600 ( c ) 1200 ( d ) 800
3. Select the correct statement .
( a ) Haploid content of human DNA is 4.6 x 100 bp .
( b ) A nitrogenous base islinked to pentose sugar through
phosphodiester linkage .
( c ) X - ray diffraction data of Maurice Wilkins
and Rosalind Franklin was thebasis of Watson and Crick's DNA
model .
( d ) DNA is an acidic substance was first identified by
Watson and Crick .
4. Identify the likely organisms ( 1 ) , ( 2 ) , ( 3 ) and ( 4 ) in the food web shown
below .
( a ) which are made up of lignin and suberin
( b ) that can withstand high temperature and strong acids and alkalies
( c ) which lack sporopollenin
( d ) through which sperms are directly released into the female gametophyte .
2. In garden pea , round shape of seeds is dominant over wrinkled shape . A pea plant heterozygous for round shape of seed is selfed and 1600 seeds produced during the cross are subsequently germinated . How many seedlings would have the parental phenotype ?
( a ) 400 ( b ) 1600 ( c ) 1200 ( d ) 800
3. Select the correct statement .
( a ) Haploid content of human DNA is 4.6 x 100 bp .
( b ) A nitrogenous base islinked to pentose sugar through
phosphodiester linkage .
( c ) X - ray diffraction data of Maurice Wilkins
and Rosalind Franklin was thebasis of Watson and Crick's DNA
model .
( d ) DNA is an acidic substance was first identified by
Watson and Crick .
4. Identify the likely organisms ( 1 ) , ( 2 ) , ( 3 ) and ( 4 ) in the food web shown
below .
( 1 ) ( 2 ) ( 3 ) ( 4 )
( a ) Deer Rabbit Frog Rat
( b ) Fox Squirrel Bat Deer
( c ) Fox Dog Tortoise Tiger
( d ) Squirrel Cat Lion Pigeon
5. Match column I with column II and select the correct option from the given
codes .
Column I Column II
A.Statin ( I ) Removal of oil stains
B.Cyclosporin ( ii ) Removal of clots from blood vessels
C. Streptokinase ( iii ) Lowering of blood cholesterol
D. Lipase ( iv ) Immuno -suppressive agent
( a ) A- ( i ) , B- ( iii ) , C- ( ii ) , D- ( iv )
( b ) A- ( iii ) ,B- ( i ) , C- ( ii ) , D- ( iv )
( c ) A- ( i ) B- ( iv ) , C- ( ii ) , D- ( iii )
( d ) A- ( iii ) , B- ( iv ) , C- ( ii ) , D- ( i )
6 The extinct human who lived 1,00,000 to 40,000 years ago , in Europe , Asia
andparts of Africa , with short stature , heavy eyebrows , receding jaws , high domed head , stocky build , a lumbering gait and stooped posture was
( a ) Homo habilis ( b ) Neanderthal man
( c ) Cro - Magnonman ( d ) Ramapithecus .
7. A person suffering from a diseasecaused by Plasmodium , experiences recurring chill and fever at the time when
( a ) the sporozoites released from RBCs are being rapidly killed and broken
down inside spleen
( b ) the trophozoites reach maximum growth and give out certain toxins
( c ) the parasite after its rapid multiplication inside RBCs ruptures them , releasing the stage that will enter fresh RBCS
( d ) the microgametocytes andmegagametocytes are being destroyed by the WBCS .
8 . Match each given function with the part ( or parts ) of the human female reproductive system labelled , A - D in the given figure .
I , Site where egg is produced
II . Site where fertilisation occurs
III . Site of implantation
IV . Part which receives the copulatory organ during coitus
( a ) I - A , II - C , III - B IV - D ( b ) 1 - B , II - C , III - A , IV - D
( c ) 1 - D , Il - C , III - B , IV - A ( d ) I - C , II - A , III - B , IV - D
9. Identify the desirable characteristics for a plasmid used in DNA technology from the following .
A. Ability to multiply and express outside the host in a bioreactor .
B. A highly active promoter .
C. A site at which replication can be initiated .
D. One or more identifiable marker genes .
E. One or more uniquerestriction sites .
( a ) A , C , D and E only ( b ) A , C and E only
( c ) B ,C , D and E only ( d ) B , C and E only
10. Biosphere reserves differ
from National parks andwildlife sanctuaries because in the former
( a ) human beings are not allowed to enter
( b ) peoman are an integral part of the system
( c ) plants are paid greater attention than the animals
( d ) living organisms are brought from all over the world and preserved for prosperity
11. Select the correct options to fill up the blanks .
( i ) With repeated use of drugs , the tolerance level of receptors present in our body.....................
( ii ) Smoking produces................. and reduces the concentration of............. in blood .
( iii ) Cannabinoid receptors are present in the..................
( iv ) Morphine is a very effective.....................and............
( v ) Opioids are extracted from the.............. of poppy plant , Papaver somniferum .
( a ) ( i ) decreases , ( ii ) sedative , pain killer , ( ii ) brain ( iv ) hallucinogen , depressant , ( v ) latex
( b ) ( i ) increases , ( ii ) CO , haem - bound oxygen , ( iii ) brain , ( iv ) sedative , painkiller , ( v ) latex
( c ) ( i ) decreases , ( ii ) CO , haem - bound oxygen , ( iii ) brain ( iv ) sedative , painkiller , ( v ) latex
( d ) ( i ) increases , ( ii ) CO , haem - bound oxygen , ( ii ) latex ( iv ) sedative , painkiller , ( v ) resin
12. Read the given statements and select the correct option
Statement 1 : Amniocentesis is often misused .
Statement 2 : Amniocentesis is meant for determining the genetic disorders in the fetus , but it is being used to determine the sex of the fetus so that female foetus may be aborted .
( a ) Both statements 1 and 2 are correct and statement 2 is the correct explanation of statement 1 .
( b ) Both statements 1 and 2 are correct but statement 2 is not the correct explanation of statement 1 .
( c ) Statement 1 is correct and statement 2 is incorrect .
( d ) Both statements 1 and 2 are incorrect .
13. The correct sequence of seral stages in hydrosere is
( a ) plankton , submerged , floating , reed swamp , sedge meadow , woodland
( b ) ( i ) increases , ( ii ) CO , haem - bound oxygen , ( iii ) brain , ( iv ) sedative , painkiller , ( v ) latex
( c ) ( i ) decreases , ( ii ) CO , haem - bound oxygen , ( iii ) brain ( iv ) sedative , painkiller , ( v ) latex
( d ) ( i ) increases , ( ii ) CO , haem - bound oxygen , ( ii ) latex ( iv ) sedative , painkiller , ( v ) resin
12. Read the given statements and select the correct option
Statement 1 : Amniocentesis is often misused .
Statement 2 : Amniocentesis is meant for determining the genetic disorders in the fetus , but it is being used to determine the sex of the fetus so that female foetus may be aborted .
( a ) Both statements 1 and 2 are correct and statement 2 is the correct explanation of statement 1 .
( b ) Both statements 1 and 2 are correct but statement 2 is not the correct explanation of statement 1 .
( c ) Statement 1 is correct and statement 2 is incorrect .
( d ) Both statements 1 and 2 are incorrect .
13. The correct sequence of seral stages in hydrosere is
( a ) plankton , submerged , floating , reed swamp , sedge meadow , woodland
( b ) plankton , floating , submerged , reed swamp , sedge meadow , woodland
( c ) plankton , submerged , floating , sedge meadow , reed swamp , woodland
( d ) plankton , submerged , floating , sedge meadow , woodland , reed swamp .
14. Consider the following statements ( A - D ) each with one or two blanks .
( A ) Bears go into ( 1 ) during winter to ( 2 ) cold weather .
( B ) A conical age pyramid with a broad base represents ( 3 ) human population . ( C ) A wasp pollinating a fig flower is an example of ( 4 ) .
( D ) An area with high levels of species richness is known as ( 5 ) .
Which one of the following options , gives the correct fill ups for the respective blank numbers from ( 1 ) to ( 5 ) in the statements ?
( a ) ( 3 ) - stable , ( 4 ) - commensalism , ( 5 ) - marsh
( b ) ( 1 ) -aestivation , ( 2 ) - escape , ( 3 ) - stable , ( 4 ) - mutualism
( c ) ( 3 ) -expanding , ( 4 ) -commensalism , ( 5 ) biodiversity park
( d ) ( 1 ) -hibernation ( 2 ) -escape , ( 3 ) -expanding , ( 5 ) hotspot .
15. Which one of the following pairs is correctly matched ?
( a ) Ribosomal RNA - carries amino acids to the site of protein synthesis .
( b ) Transcription - process by which proteins are synthesised .
( c ) Translation - process by which mRNA synthesis takes place .
( d ) Anticodon - site of RNA molecule that contains complementary bases to the triple code on the mRNA .
16. How many types of genetically different gametes will be produced by a heterozygous plant having the genotype AABbCc ?
( a ) Two ( b ) Four ( C ) Six ( d ) Nine
17. Given below are five conditions ( i - v ) regarding contrivances to ensure cross pollination in plants .
( i ) Dicliny - Anthers land stigma mature at different times in a bisexual flower . ( ii ) Dichogamy - Flowers are unisexual .
( iii ) Prepotency - Pollen grains of same flower germinate more rapidl over the stigma than the pollen grains of another flower .
( iv ) Heterostyly - Two or three type of flowers with different heights of styles . ( v ) Herkogamy - A mechanical device to prevent self pollination .
Which of the given conditions are correct ?
( a ) ( i ) and ( ii ) ( b ) ( i ) . ( ii ) and ( iii ) ( c ) ( i ) , ( iv ) and ( v ) ( d ) ( iv ) and ( v )
18. The relation between species richness and area is described on a logarithmic scale by the equation ( where S = species richness , A area , z slope of the line ( regression coefficient ) , C = Y - intercept )
( a ) log S = log C - Zlog A ( b ) log S = Z log A
( c ) log S = log C + Z log A ( d ) log S = log C.
19. Select the incorrect statement .
( a ) The Montreal protocol is associated with the control of emission of ozone depleting substances .
( b ) Methane and carbon dioxide are greenhouse gases .
( c ) Dobson units are used to measure oxygen content .
( d ) Use of incinerators is crucial for the disposal of hospital wastes .
20. What is the function of progesterone in an oral contraceptive pills ?
( a ) To inhibit ovulation ( b ) To check oogenesis
( c ) To check entry of sperms into cervix ( d ) To check sexual behaviour
14. Consider the following statements ( A - D ) each with one or two blanks .
( A ) Bears go into ( 1 ) during winter to ( 2 ) cold weather .
( B ) A conical age pyramid with a broad base represents ( 3 ) human population . ( C ) A wasp pollinating a fig flower is an example of ( 4 ) .
( D ) An area with high levels of species richness is known as ( 5 ) .
Which one of the following options , gives the correct fill ups for the respective blank numbers from ( 1 ) to ( 5 ) in the statements ?
( a ) ( 3 ) - stable , ( 4 ) - commensalism , ( 5 ) - marsh
( b ) ( 1 ) -aestivation , ( 2 ) - escape , ( 3 ) - stable , ( 4 ) - mutualism
( c ) ( 3 ) -expanding , ( 4 ) -commensalism , ( 5 ) biodiversity park
( d ) ( 1 ) -hibernation ( 2 ) -escape , ( 3 ) -expanding , ( 5 ) hotspot .
15. Which one of the following pairs is correctly matched ?
( a ) Ribosomal RNA - carries amino acids to the site of protein synthesis .
( b ) Transcription - process by which proteins are synthesised .
( c ) Translation - process by which mRNA synthesis takes place .
( d ) Anticodon - site of RNA molecule that contains complementary bases to the triple code on the mRNA .
16. How many types of genetically different gametes will be produced by a heterozygous plant having the genotype AABbCc ?
( a ) Two ( b ) Four ( C ) Six ( d ) Nine
17. Given below are five conditions ( i - v ) regarding contrivances to ensure cross pollination in plants .
( i ) Dicliny - Anthers land stigma mature at different times in a bisexual flower . ( ii ) Dichogamy - Flowers are unisexual .
( iii ) Prepotency - Pollen grains of same flower germinate more rapidl over the stigma than the pollen grains of another flower .
( iv ) Heterostyly - Two or three type of flowers with different heights of styles . ( v ) Herkogamy - A mechanical device to prevent self pollination .
Which of the given conditions are correct ?
( a ) ( i ) and ( ii ) ( b ) ( i ) . ( ii ) and ( iii ) ( c ) ( i ) , ( iv ) and ( v ) ( d ) ( iv ) and ( v )
18. The relation between species richness and area is described on a logarithmic scale by the equation ( where S = species richness , A area , z slope of the line ( regression coefficient ) , C = Y - intercept )
( a ) log S = log C - Zlog A ( b ) log S = Z log A
( c ) log S = log C + Z log A ( d ) log S = log C.
19. Select the incorrect statement .
( a ) The Montreal protocol is associated with the control of emission of ozone depleting substances .
( b ) Methane and carbon dioxide are greenhouse gases .
( c ) Dobson units are used to measure oxygen content .
( d ) Use of incinerators is crucial for the disposal of hospital wastes .
20. What is the function of progesterone in an oral contraceptive pills ?
( a ) To inhibit ovulation ( b ) To check oogenesis
( c ) To check entry of sperms into cervix ( d ) To check sexual behaviour
===========================================
If anyone want to join my WhatsApp mail me on my mail ID
indiabiologymanishmevada@gmail.com
ANSWER KEY
1. ( c ) 2. ( c ) 3. ( c ) 4. ( a ) 5. ( d ) 6. ( b ) 7. ( c ) 8. ( c ) 9. ( c ) 10. ( b ) 11. ( b ) 12. ( a ) 13. ( a ) 14. ( c ) 15. ( d ) 16. ( b ) 17. ( d ) 18. ( c )
19. ( c ) 20. ( a )
========================================
Mail- indiabiologymanishmevada@gmail.com
Please do not enter any spam link or word in the comment box