Neco 2017 Biology Question 4

A simple closed respirometer was used to measure the rate of respiration of germinating mung beans at two temperatures. The apparatus consisted of a sealed bottle containing 50 mL of water and a set of 10 germinating beans. The volume of gas collected (as displaced water) was recorded every 5 minutes for 30 minutes at each temperature. Data recorded: **At 25 °C** | Time (min) | Volume displaced (mL) | |------------|-----------------------| | 0 | 0 | | 5 | 2.8 | | 10 | 5.6 | | 15 | 8.4 | | 20 | 11.2 | | 25 | 14.0 | | 30 | 16.8 | **At 35 °C** | Time (min) | Volume displaced (mL) | |------------|-----------------------| | 0 | 0 | | 5 | 4.5 | | 10 | 9.0 | | 15 | 13.5 | | 20 | 18.0 | | 25 | 22.5 | | 30 | 27.0 | Answer the following: