Among the following bio-geo-chemical cycles which one does not have losses due to respiration?
Phosphorus
Nitrogen
Sulphur
All of these
The sequence of communities of primary succession in water is
Phytoplankton, sedges, free-floating hydrophytes, rooted hydrophytes, grasses and trees.
Phytoplankton, free-floating hydrophytes, rooted hydrophytes, sedges, grasses and trees.
Free-floating hydrophytes, sedges, phytoplankton, rooted hydrophytes, grasses and trees.
Phytoplankton, rooted submerged hydrophytes, floating hydrophytes, reed swamp, sedges, meadow and trees.
The reservoir for the gaseous type of bio-geochemical cycle exists in
stratosphere
atmosphere
ionosphere
lithosphere
If the carbon atoms fixed by producers already have passed through three species, the trophic level of the last species would be
scavenger
tertiary producer
tertiary consumer
secondary consumer
Which of the following type of ecosystem is expected in an area where evaporation exceeds precipitation, and mean annual rainfall is below 100 mm
Grassland
Shrubby forest
Desert
Mangrove