Photosynthesis in Higher PlantsMedium
Question
Greatest producers of organic matter are
Options
A.crop plants
B.forests
C.plants of the land area
D.phytoplankton of oceans
Solution
Ocean is the largest ecosystem and phytoplankton (algae) of oceans are the greatest produc ers of orgnic matter. Accorducers of an estimate, about 70-80 billion tonne CO2 is fixed annually by terrestrial and aquatic photoautotrophs. It produces over 170 billion ton of dry organic matter. Out of these only 10% (17 billion tonne) of dry matter is produced by land plants while 90% of its is formed in oceans.
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