In which one of the following habitats does the diurnal temperature of soil surface vary most?
Shrub land
Forest
Desert
Grassland
The equilibrium of the species is disturbed by
Plants growing on sand and gravel are called
Assertion : Thick cuticle is mostly present in disease resistant plants.
Reason : Disease causing agents cannot grow on cuticle and cannot invade the cuticle.
Gloger's rule related to the
Which of the following is capable of causing green house effect in the environment