NEET 2021

184 Questions • 180 Minutes • 2021

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Q121
Which of the following statements is correct ?
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Q122
Select the correct pair. [table] Structure | Name ; a. In dicot leaves, vascular bundles are surrounded by large thick-walled cells | Conjunctive tissue ; b. Cells of medullary rays that form part of cambial rings | Interfascicular cambium ; c. Loose parenchyma cells rupturing the epidermis and forming a lens-shaped opening in bark | Spongy parenchyma ; d. Large colorless empty cells in the epidermis of grass leaves | Subsidiary cells [/table]
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Q123
Match List - 1 with List - 2 [table] List-1 | List-2 ; A. Protein | (i) C = C double bonds ; B. Unsaturated fatty acid | (ii) Phosphodiester bonds ; C. Nucleic acid | (iii) Glycosidic bonds ; D. Polysaccharide | (iv) Peptide bonds [/table] Choose the correct answer from the options given below.
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Q124
Match List - 1 with List - 2 [table] List-1 | List-2 ; A. S phase | (i) Proteins are synthesized ; B. $G_2$ phase | (ii) Inactive phase ; C. Quiescent stage | (iii) Interval between mitosis and initiation of DNA replication ; D. $G_1$ phase | (iv) DNA replication [/table] Choose the correct answer from the options given below.
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Q125
Match Column - I with Column - II [table] List-1 | List-2 ; A. $Nitrococcus$ | (i) Denitrification ; B. $Rhizobium$ | (ii) Conversion of ammonia to nitrite ; C. $Thiobacillus$ | (iii) Conversion of nitrite to nitrate ; D. $Nitrobacter$ | (iv) Conversion of atmospheric nitrogen to ammonia [/table] Choose the correct answer from options given below.
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Q126
Which of the following statements is incorrect?
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Q127
Which of the following statements is incorrect?
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Q128
In some members of which of the following pairs of families, pollen grains retain their viability for months after release ?
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Q129
What is the role of RNA ploymerase III in the process of transcription in eukaryotes?
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Q130
DNA fingerprinting involves identifying differences in some specific regions in DNA sequence, called as:
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Q131
Identify the correct statement.
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Q132
Plasmid pBR322 has PstI restriction enzyme site within gene $amp^R$ that confers ampicillin resistance. If this enzyme is used for inserting a gene for $\beta$-galactoside production and the recombinant plasmid is inserted in an $E.\ coli$ strain
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Q133
Now a days it is possible to detect the mutated gene causing cancer by allowing radioactive probe to hybridise its complimentary DNA in a clone of cells, followed by its detection using autoradiography because:
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Q134
In the exponential growth equation $N_t = N_0e^{rt}$, e represents:
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Q135
Which one of the following belongs to the family Muscidae?
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Q136
Match List-I with List-II [table] List-I | List-II ; (A) Metamerism | (i) Coelenterata ; (B) Canal system | (ii) Ctenophora ; (C) Comb plates | (iii) Annelida ; (D) Cnidoblasts | (iv) Porifera [/table] Choose the correct answer from the options given below.
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Q137
Which one of the following organisms bears hollow and pneumatic long bones?
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Q138
Match the following: [table] List-I | List-II ; (A) $Physalia$ | (i) Pearl oyster ; (B) $Limulus$ | (ii) Portuguese Man of War ; (C) $Ancylostoma$ | (iii) Living fossil ; (D) $Pinctada$ | (iv) Hookworm [/table] Choose the correct answer from the options given below.
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Q139
Read the following statements. A. Metagenesis is observed in Helminths. B. Echinoderms are triploblastic and coelomate animals. C. Round worms have organ-system level of body organization. D. Comb plates present in ctenophores help in digestion. E. Water vascular system is characteristic of Echinoderms. Choose the correct answer from the options given below.
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Q140
Which of the following characteristics is incorrect with respect to cockroach?
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Paper Info
  • Exam: NEET
  • Year: 2021
  • Questions: 184
  • Duration: 180 mins
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