The zone of soil showing microbial activity around the roots of higher plants is called:? April 30, 2019 BILAL KHATTAK0 A.Rhizosphere B.Rhizoplane C.Soil microfloraD.All of theseundefined
Term ecology was given by:? April 30, 2019 BILAL KHATTAK0 A.Hackel B.Cuvier C.ReiterD.Malthusundefined
The soil cover of the earth lies between:? April 28, 2019 BILAL KHATTAK0 A.Atmosphere and lithosphere B.Lithosphere and biosphere C.Atmosphere and hydrosphereD.All of theseundefined
The biological weathering occurs due to the action of:? April 27, 2019 BILAL KHATTAK0 A.Acids B.Alkalies C.OxygenD.Carbon dioxideundefined
Which of the following is not the characteristic feature of the anatomy of xerophytes?? April 25, 2019 BILAL KHATTAK0 A.Spongy paraenchyma B.Well developed conducting tissue C.Well developed mechanical tissueD.Thick cuticleundefined
When one population is harmed and the other remains unaffected the relationship is called:? April 25, 2019 BILAL KHATTAK0 A.Amensalism B.Predation C.Protoco-operationD.Parasitismundefined
Ephemeral xerophytes are those that are:? April 23, 2019 BILAL KHATTAK0 A.Drought resisting B.Drought escaping C.Drought enduringD.None of theseundefined
Tropical dense forest is due to:? April 20, 2019 BILAL KHATTAK0 A.Low temperature and excess rain B.High temperature and excess rain C.High temperature and lesser rainD.Wild animals (tigers, lions, bears etc.)undefined
The heliophytes are characterised by:? April 16, 2019 BILAL KHATTAK0 A.Vertically oriented leaves B.Horizontally oriented leaves C.Dropping leavesD.Twisted leavesundefined
Plants growing in alpine zone are dwarf due to:? April 15, 2019 BILAL KHATTAK0 A.Low temperature B.High wind velocity C.High light intensityD.None of theseundefined