Hydrophytes are characterized by
presence of sclerenchyma
presence of aerenchyma
absence of aerenchyma
presence of root nodules
The soil, which is transported by wind is known as
colluvial
eolian
alluvial
glacial
The soil with poorest water holding capacity is
clay
loam
sandy
None of these
The age of pyramid with broad base indicates
high percentage of young individuals
low percentage of young individuals
high percentage of old individuals
low percentage of old individuals
Study of environment and animal relation is
Ecosystem
Phytosociology
Biotic community
Ecology
Zero growth means
natality balance mortality
natality is more than mortality
natality is less than mortality
natality is zero
Which of the following is correct for r-selected species?
Large number of progeny with small size
Large number of progeny with large size
Small number of progeny with small size
Small number of progeny with large size
The organisms inhabiting a common environment belong to the same
species
genus
population
community
Population growth curve in most animals, except humans is
S-shaped
J-shaped
J-shaped with tail
S-shaped with tail
The maximum growth rate occurs in
stationary phase
senescent phase
lag phase
exponential phase
