Which of the following is not a angiosperm?? January 14, 2020 BILAL KHATTAK0 A.Chara B.Hydrilla C.LotusD.Water lettuseundefined
The type of relationship where weaker partner is benefitted and stronger remains unaffected is sometime called:? January 11, 2020 BILAL KHATTAK0 A.Allotropy B.Allelopathy C.SynnecrosisD.Allolimyundefined
The soils that are fully laden with water i.e., water logged, are known are:? January 11, 2020 BILAL KHATTAK0 A.Physically dry soils B.Physiologically dry soils C.Alkaline soilsD.Acidic soilsundefined
Possibilities of presence of coal in a particular area can be guessed by the study of:? January 10, 2020 BILAL KHATTAK0 A.Economic Botany B.Ecology C.Pollen analysisD.Mining the areaundefined
Plants growing in loose non-saline soil are:? January 9, 2020 BILAL KHATTAK0 A.Xerophytes B.Halophytes C.MesophytesD.Lithophytesundefined
In western Himalayas, the Betula trees usually occur in:? January 7, 2020 BILAL KHATTAK0 A.Tropical zone B.Sub-tropical zone C.Alpine zoneD.Temperate zoneundefined
Submerged hydrophytes have well developed:? January 6, 2020 BILAL KHATTAK0 A.Vascular system B.Aerenchyma C.Root systemD.Stomaundefined
Which one of the following factors is biotic?? January 6, 2020 BILAL KHATTAK0 A.Photoperiod B.CO2 content to the soil C.Texture and porosity of soilD.Rainfallundefined
Which of the following does not have stomata?? January 4, 2020 BILAL KHATTAK0 A.Hydrophytes B.Submerged hydrophytes C.XerophytesD.Mesophytesundefined
The mangrove plants are generally characterised by:? January 2, 2020 BILAL KHATTAK0 A.Mircophylly B.Pneumatophores and vivipary C.Absence of aerenchymaD.Poor water storageundefined