Tag: GATE Life Science Previous Year Papers with Solutions

Q.62 With respect to adhesion and cohesion of stamens, identify the INCORRECT statements.P. Adnation of stamens to petals is described as epiphyllous stamensQ. In Calotropis, stamens and carpels are united to […]

Q.61 Identify the free radicals (marked as ‘?’) in sequence from the inter-conversion of reactive oxygen species as shown below. O2 → ? → H2O2 → ? → H2O Given […]

Q.60 Which of the following statements are TRUE on transgene approach?P. T–DNA integration occurs mainly through non–homologous recombinationQ. The Gateway cloning depends on recombination technology as opposed to standard uses ofrestriction […]

Q.59 Which of the following statements are CORRECT for somatic cell hybridization?P. For fusion of protoplast, dimethylsulfoxide (DMSO) is used as a fusogenQ. The enzyme ‘Cellulase Onozuka’ used for protoplast […]

Q.58 Match the recombinant proteins produced through molecular farming with their applications. Recombinant Proteins Applications P. Hirudine Q. Trichosanthin R. Somatomorphin S. β-Interferon 1. HIV therapy 2. Anticoagulant 3. Growth […]

Q.57 Which of the following statements are TRUE for the transposable elements?P. Barbara McClintock discovered the autonomous and non-autonomous transposable elements inMaizeQ. Variations in flower pigmentation in Antirhinum are due to […]

Q.56 Which of the following statements are TRUE for plant growth regulators?P. The release of cellulase and polygalacturonase into the cell wall is promoted by abscissic acidQ. The early biosynthetic steps […]

Q.55 Which one of the following drugs is obtained from the capsule of Papaver somniferum?(A) Papain (B) Codeine (C) Digoxin (D) Bromelain Codeine is the drug obtained from the capsule […]

Q.54 Which of the following best represents the flow of energy through an ecosystem?(A) Producers –> Primary consumers –>Secondary consumers(B) Sun –>Producers –>Secondary consumers –>Primary consumers(C) Sun –>Producers –>Primary consumers –>Secondary consumers(D) […]

Q.53 Carbon dioxide and other ‘greenhouse gases’ act by(A) destroying ozone in the stratosphere(B) trapping heat in the earth’s atmosphere(C) allowing more visible light to reach the earth’s surface(D) reducing the […]