Prepare for IB ESS HL 2.2.3 by outlining how photosynthesis forms organic matter from carbon dioxide and water, then how cellular respiration returns carbon dioxide and water.
Outline the transfers and transformations of matter as it enters and flows through the first trophic level of a food chain.
Transfers: [3 max]
a. Carbon dioxide diffuses into leaves;
b. Nitrates/phosphates/(inorganic) minerals diffuse/actively transported into roots;
c. Water is taken up/diffuses into roots;
d. Sugars translocated from leaves to other parts of the plant;
e. Water vapour/oxygen diffuses out of leaves;
f. Organic matter is transferred to next trophic level/decomposers through feeding
Transformations: [3 max]
a. Conversion of carbon dioxide/water into organic matter/glucose/oxygen in photosynthesis;
b. Conversion of some organic matter into inorganic matter/CO2/water through respiration;
c. Conversion of glucose to other organic compounds in metabolism;
d. Water evaporates through leaves in transpiration;
e. Conversion of organic matter to inorganic matter through decomposition
Only credit transfers/transformations referring to matter (not energy).