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Q.59 Match the gene of interest for various aspects of crop improvement Gene insert P. bar Q. vip3A R. β-lcy S. gsh-II Aspects of crop improvement 1. Tolerance to heavy metals […]

Q.58 Match the following plant secondary compounds with their uses and source plants Compounds P. Guggulusterol Q. Shikonin R. Ajmalicine S. Glycyrrhizin Uses 1. Anti-hypertensive 2. Anti-rheumatic 3. Dye 4. Sweetener […]

Q.57 Which of the following statements are TRUE on DNA delivery methods during plant transformation? P. Single stranded nicks are made in T-DNA border repeat by the VirD1, VirD2 and VirD3 […]

Q.56 Which of the following statements in photosynthesis are CORRECT? P. The absorption maxima for photosystem I (PS I) and PS II are 680 nm and 700 nm, respectively Q. Photosynthetic […]

Q.55 A photoautotrophic micropropagation system can be established by increasing the (A) sucrose concentration in the culture medium (B) CO2 concentration in the culture medium (C) agar concentration in the culture […]

Q.54 Retrograde signaling involves communication of (A) nucleus to the chloroplast (B) endoplasmic reticulum to the nucleus (C) nucleus to the mitochondria (D) chloroplast to the nucleus Retrograde signaling in plants […]

Q.53 The DNA content of a nucleus can be measured by (A) ESR Spectroscopy (B) FTIR Spectroscopy (C) Flow Cytometry (D) X-Ray Crystallography Flow cytometry is the standard technique for measuring […]

Q.52 The transition of water molecule from liquid to glassy state during cryopreservation is termed as (A) Vitrification (B) Hyperhydricity (C) Cryoprotectant (D) Habituation Vitrification prevents ice crystal damage in cryopreservation […]

Q.51 In which one of the following phases of cell cycle the drug colchicine exerts its effect? (A) G1 (B) G2 (C) S (D) M Colchicine disrupts microtubule formation, arresting cells […]

Q.50 One of the defense mechanisms adopted by plants for detoxification of heavy metals is the synthesis of (A) Phytochelatin (B) Calmodulin (C) Tubulin (D) Systemin Plants synthesize phytochelatins to […]