Which one of the following plants use as a source for carbon dioxide?
(a) Carbonate rocks
(b) Calcium rocks
(d) Atmospheric CO2
The question was asked during an internship interview.
My enquiry is from Ecosystem in section Ecosystem of Biology – Class 12
The correct choice is (d) Atmospheric CO2
The explanation is: The plants use atmospheric CO2 as a source of carbon dioxide for food production. They produce food using photosynthesis. Photosynthesis is a process in which producers (green plants) in the presence of CO2, water, sunlight, and chlorophyll yield energy and oxygen is released in the form of gas.