The experimental proof for semiconservative replication of DNA was first shown in a Option 1 : Fungus Option 2 : Virus Option 3 : Plant Option 4 : Bacterium Correct answer is option 4

Secondary xylem and phloem in dicot stem are produced by Option 1 : Apical meristems Option 2 : Phellogen Option 3 : Axillary meristem Option 4 : Vascular cambium The correct answer is option 4

Sweet potato is a modified Option 1 : Stem Option 2 : Rhizome Option 3 : Adventitious root Option 4 : Tap root The correct answer is option 3