In recent years, there has been an increasing incidence of floods in the plains of northern India because
There has been an increase in annual rainfall
The rate of silting of dams has gone up
There has been increased deforestation in the catchment areas
Increased areas of land is being self cultivated
Comment on the following figures : $\rm {I,\,II}$ and $\rm {III}$ : $\rm {A, \,B, \,C, \,D, \,G, \,P, \,Q, \,R,\,S}$ are species
Assertion : Thick cuticle is mostly present in disease resistant plants.
Reason : Disease causing agents cannot grow on cuticle and cannot invade the cuticle.
Which of the following isolation is important for speciation
Distribution of different plant geographically is called
Who defined ecology as the reciprocal relationship between organisms and their environments