The association between Rhizobium and roots of leguminous plants is
Parasitism
Symbiosis
Commensalism
Predation
The greatest problem of water conservation is to reduce the amount of
Precipitation
Runoff water
Groundwater
Evaporation
Association of animals in which both the partners are benefitted is called
Colony
Mutualism
Amensalism
The study of interactions between living organisms and environment is called as
Ecosystem
Phytogeography
Ecology
Phytosociology
The maximum growth rate occurs in
lag phase
stationary phase
senescent phase
exponential phase
Carrying capacity of environment is determined by
Birth rate
Death rate
Limiting resources
Population growth
Human population exhibits
Z- shaped growth curve
S- shaped growth curve
J- shaped growth curve
All the above
A permanent loss to a population is due to
Emmigration
Immigration
Migration
Natality
Niche is defined as the
Position of species in a community in relation to other species
Place where organism lives
Place where organism lives and performs its duty
Place where population perform their duties
Reduction in vascular tissue, mechanical tissue and cuticle is characteristic of
Xerophytes
Mesophytes
Epiphytes
Hydrophytes
