NEET-XII-Biology
Previous Year Paper year:2022
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- Qstn #15If ' `` 8 `` ' Drosophila in a laboratory population of ' `` 80 `` ' died during a week, the death rate in the population is ___individuals per Drosophila per week.
(A)zero
(B)0.1
(C)10
(D)1.0digAnsr: B:
- Qstn #16In the taxonomic categories which hierarchial arrangement in ascending order is correct in case of animals ?
(A)Kingdom, Order, Phylum, Class, Family, Genus, Species
(B)Kingdom, Phylum, Class, Order, Family, Genus, Species
(C)Kingdom, Class, Phylum, Family, Order, Genus, Species
(D)Kingdom, Order, Class, Phylum, Family, Genus, Species
Solution">digAnsr: BAns : * Provided options are in descending order, not in ascending order.
- Qstn #17Given below are two statements : Statement I: Restriction endonucleases recognise specific sequence to cut DNA known as palindromic nucleotide sequence. Statement II : Restriction endonucleases cut the DNA strand a little away from the centre of the palindromic site. In the light of the above statements, choose the most appropriate answer from the options given below:
(A)Statement I is incorrect but Statement II is correct
(B)Both Statement I and Statement II are correct
(C)Both Statement I and Statement II are incorrect
(D)Statement I is correct but Statement II is incorrectdigAnsr: B:
- Qstn #18Breeding crops with higher levels of vitamins and minerals or higher proteins and healthier fats is called :
(A)Bio-accumulation
(B)Bio-magnification
(C)Bio-remediation
(D)Bio-fortificationdigAnsr: D:
- Qstn #19Identify the microorganism which is responsible for the production of an immunosuppressive molecule cyclosporin A:
(A)Streptococcus cerevisiae
(B)Trichoderma polysporum
(C)Clostridium butylicum
(D)Aspergillus nigerdigAnsr: B:
- Qstn #20Which of the following is a correct match for disease and its symptoms?
(A)Muscular dystrophy - An auto immune disorder causing progressive degeneration of skeletal muscle
(B)Arthritis - Inflammed joints
(C)Tetany - high `` Ca ^{2+} `` level causing rapid spasms.
(D)Myasthenia gravis - Genetic disorder resulting in weakening and paralysis of skeletal muscledigAnsr: B:
- Qstn #21Which of the following statements with respect to Endoplasmic Reticulum is incorrect?
(A)SER are the sites for lipid synthesis
(B)RER has ribosomes attached to ER
(C)SER is devoid of ribosomes
(D)In prokaryotes only RER are presentdigAnsr: D:
- Qstn #22Given below are two statements: Statement I : The release of sperms into the seminiferous tubules is called spermiation. Statement II : Spermiogenesis is the process of formation of sperms from spermatogonia. In the light of the above statements, choose the most appropriate answer from the options given below :
(A)Statement I is incorrect but Statement II is correct
(B)Both Statement I and Statement II are correct
(C)Both Statement I and Statement II are incorrect
(D)Statement I is correct but Statement II is incorrectdigAnsr: D:
- Qstn #23Identify the asexual reproductive structure associated with Penicillium:
(A)Buds
(B)Zoospores
(C)Conidia
(D)GemmulesdigAnsr: C:
- Qstn #24In an E.coli strain `` i `` gene gets mutated and its product can not bind the inducer molecule. If growth medium is provided with lactose, what will be the outcome?
(A)RNA polymerase will bind the promoter region
(B)Only `` z `` gene will get transcribed
(C) `` z, y, a `` genes will be transcribed
(D) `` z, y, a `` genes will not be translateddigAnsr: D:
- Qstn #25Tegmina in cockroach, arises from :
(A)Prothorax and Mesothorax
(B)Prothorax
(C)Mesothorax
(D)MetathoraxdigAnsr: C:
- Qstn #26In which of the following animals, digestive tract has additional chambers like crop and gizzard ?
(A)Pavo, Psittacula, Corvus
(B)Corvus, Columba, Chameleon
(C)Bufo, Balaenoptera, Bangarus
(D)Catla, Columba, CrocodilusdigAnsr: A:
- Qstn #27Which of the following statements are true for spermatogenesis but do not hold true for Oogenesis ? (a) It results in the formation of haploid gametes (b) Differentiation of gamete occurs after the completion of meiosis (c) Meiosis occurs continuously in a mitotically dividing stem cell population (d) It is controlled by the Luteinising hormone (LH) and Follicle Stimulating Hormone (FSH) secreted by the anterior pituitary (e) It is initiated at puberty Choose the most appropriate answer from the options given below:
(A)
(b),
(c) and
(e) only
(B)
(c) and
(e) only
(C)
(b) and
(c) only
(D)
(b),
(d) and
(e) onlydigAnsr: A:
- Qstn #28Given below are two statements : Statement I: Fatty acids and glycerols cannot be absorbed into the blood. Statement II: Specialized lymphatic capillaries called lacteals carry chylomicrons into lymphatic vessels and ultimately into the blood. In the light of the above statements, choose the most appropriate answer from the options given below:
(A)Statement I is incorrect but Statement II is correct
(B)Both Statement I and Statement II are correct
(C)Both Statement I and Statement II are incorrect
(D)Statement I is correct but Statement II is incorrectdigAnsr: B:
- Qstn #29Lippe's loop is a type of contraceptive used as :
(A)Copper releasing IUD
(B)Cervical barrier
(C)Vault barrier
(D)Non-Medicated IUDdigAnsr: D: