Respiration class 12 chapter 14 federal board

Flowchart nodes

• RESPIRATION

• External respiration :  1. at organismic level 2. includes inhalation of o2 and exhalation of co2.

• both process are inter-linked as O2 that's inhaled is required for cellular respiration that produces co2 which is exhaled

• Internal respiration :  1. at cellular level 2. breakdown of complex organic compounds into smaller molecules for release of energy.