Mark the correct relationship:? October 4, 2019 BILAL KHATTAK0 A.Holard – Chesard = Ecard B.Chesard – Ecard = Holard C.Holard Ecard = ChesardD.Ecard – Chesard = Holardundefined
Which of the following is a submerged floating hydrophyte?? October 3, 2019 BILAL KHATTAK0 A.Tpha B.Trapa C.PotamogetonD.Ceratophyllumundefined
Plants are killed in winter by frost:? September 28, 2019 BILAL KHATTAK0 A.Because there is no transpiration B.Because respiration ceases at such a low temperature C.Because no photosynthesis takes place at such a low temperatureD.Because of desiccation and mechanical damage to the tissuesundefined
Plants of salty seashore wetlands are called:? September 27, 2019 BILAL KHATTAK0 A.Halophytes B.Heliophytes C.HydrophytesD.Saprophytesundefined
Which one has feebly developed root system and numerous air cavities?? September 25, 2019 BILAL KHATTAK0 A.Xerophytes B.Halophytes C.HydrophytesD.Mesophytesundefined
Those chemicals which are produced by plants and affect other plants are broadly called:? September 25, 2019 BILAL KHATTAK0 A.Depresants B.Allomones C.AllelochemicsD.Kairomonesundefined
By chemical composition the humus has mzximum percentage of:? September 24, 2019 BILAL KHATTAK0 A.Nitrogen B.Oxygen C.CarbonD.Hydrogenundefined
Soil salinity is measured by:? September 24, 2019 BILAL KHATTAK0 A.Potometer B.Porometer C.ColorimeterD.Conductivity meterundefined
In Opuntia, the leaves are modified into:? September 24, 2019 BILAL KHATTAK0 A.Scales B.Stolons C.SpinesD.Phyllocladesundefined
Mark the draught evader:? September 23, 2019 BILAL KHATTAK0 A.Kangaroo rat B.Camel C.Desert ratD.All of theseundefined