The reactions of ionic compounds are faster than that of covalent compounds because the ionic compounds are composed mainly of positive & negative ions which are easy to react while the covalent compounds bonds...
Each organism ingests what it needs from various substances by different means, There is no need for specialized transport tissues in primitive plants (like algae), as the raw material (CO2, water, and mineral salts)...
In Blackman’s experiments on the limiting factors of photosynthesis, He concluded that photosynthesis consists of two kinds of reactions which are Light reactions (light acts as the limiting factor for the rate of photosynthesis),...
Green leaves are the main sites of photosynthesis as they contain the green plastids in the higher plants, Green herbaceous stems may participate, to some extent, in this process as they contain chlorenchymatous tissues...
