Of the total incident solar radiation, the proportion of PAR is
about 60%
less than 50%
more than 80%
more than 80%
B.
less than 50%
PAR ( photosynthetically active radiation) designates the spectral range of solar radiation from 400 to 700 nm that photosynthetic organisms are able to use in the process of photosynthesis. Of the total incident solar radiation, the proportion of PAR is less than 50%.
Which one of the following animals may occupy more than one trophic levels in the same ecosystem at the same time?
Sparrow
Lion
Goat
Goat
Which one of the following statements is correct for secondary succession?
It occurs on a deforested site
It follows primary succession
It is similar to primary succession except that it has a relatively fast pace
It is similar to primary succession except that it has a relatively fast pace
Both, hydrarch and xerarch successions lead to
medium water conditions
xeric conditions
highly dry conditions
highly dry conditions
Which one of the following statements for pyramid of energy is incorrect, whereas the remaining three are correct?
It shows energy content of different trophic level organisms
It is inverted in shape
It is upright in shape
It is upright in shape
