NEET 2020

177 Questions • 180 Minutes • 2020

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Name the plant growth regulator which upon spraying on sugarcane crop, increases the length of stem, thus increasing the yield of sugarcane crop.

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Identify the wrong statement with regard to Restriction Enzymes.

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Match the following : [table] Column-I | Column-II ; (a) Inhibitor of catalytic activity | (i) Ricin ; (b) Possess peptide bonds | (ii) Malonate ; (c) Cell wall material in fungi | (iii) Chitin ; (d) Secondary metabolite | (iv) Collagen [/table] Choose the correct option from the following :

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Goblet cells of alimentary canal are modified from :

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Match the following columns and select the correct option. [table] Column-I | Column-II ; (a) 6 - 15 pairs of gill slits | (i) $Trygon$ ; (b) Heterocercal caudal fin | (ii) Cyclostomes ; (c) Air Bladder | (iii) Chondrichthyes ; (d) Poison sting | (iv) Osteichthyes [/table]

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Dissolution of the synaptonemal complex occurs during :

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Name the enzyme that facilitates opening of DNA helix during transcription.

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Which of the following statements is correct ?

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Which of the following regions of the globe exhibits highest species diversity ?

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Match the following columns and select the correct option. [table] Column-I | Column-II ; (a) Pituitary gland | (i) Grave's disease ; (b) Thyroid gland | (ii) Diabetes mellitus ; (c) Adrenal gland | (iii) Diabetes insipidus ; (d) Pancreas | (iv) Addison's disease [/table]

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The product(s) of reaction catalyzed by nitrogenase in root nodules of leguminous plants is/are :

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Match the following concerning essential elements and their functions in plants : [table] Column-I | Column-II ; (a) Iron | (i) Photolysis of water ; (b) Zinc | (ii) Pollen germination ; (c) Boron | (iii) Required for chlorophyll biosynthesis ; (d) Manganese | (iv) IAA biosynthesis [/table] Select the correct option :

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Which of the following would help in prevention of diuresis ?

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Meiotic division of the secondary oocyte is completed :

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Match the following columns and select the correct option. [table] Column-I | Column-II ; (a) Gregarious, polyphagous pest | (i) $Asterias$ ; (b) Adult with radial symmetry and larva with bilateral symmetry | (ii) Scorpion ; (c) Book lungs | (iii) $Ctenoplana$ ; (d) Bioluminescence | (iv) $Locusta$ [/table]

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Match the following columns and select the correct option. [table] Column-I | Column-II ; (a) Floating Ribs | (i) Located between second and seventh ribs ; (b) Acromion | (ii) Head of the Humerus ; (c) Scapula | (iii) Clavicle ; (d) Glenoid cavity | (iv) Do not connect with the sternum [/table]

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Secondary metabolites such as nicotine, strychnine and caffeine are produced by plants for their :

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Match the following columns and select the correct option. [table] Column-I | Column-II ; (a) Bt cotton | (i) Gene therapy ; (b) Adenosine deaminase deficiency | (ii) Cellular defence ; (c) RNAi | (iii) Detection of HIV infection ; (d) PCR | (iv) $Bacillus\ thuringiensis$ [/table]

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From his experiments, S.L. Miller produced amino acids by mixing the following in a closed flask :

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Match the organism with its use in biotechnology. [table] Column-I | Column-II ; (a) $Bacillus\ thuringiensis$ | (i) Cloning vector ; (b) $Thermus\ aquaticus$ | (ii) Construction of first rDNA molecule ; (c) $Agrobacterium\ tumefaciens$ | (iii) DNA polymerase ; (d) $Salmonella\ typhimurium$ | (iv) Cry proteins [/table] Select the correct option from the following :

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Paper Info

Exam: NEET
Year: 2020
Questions: 177
Duration: 180 mins

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