Write an activity to show that greminating seeds respire
Answers
Answer:
Actually, the germinating seeds respire and produce CO2, which is absorbed by KOH solution. This creates a vacuum in the conical flask. The air present in the bent glass tube moves into the conical flask. This pulls the water in the bent tube further up.
OR
Carbon dioxide released during the aerobic respiration is absorbed by potassium hydroxide and creates a vacuum and causes rise of water in the bent tube. If we put a burning candle in the setup, the candle extinguishes which proves oxygen is utilized by germinating seed for respiration.
Answer:
Put some germinating seeds in a conical flask.
The conical flask is fitted to a delivery tube bent twice at right angles by means of cork.
Suspend a small test tube containing 20% potassium hydroxide.
Dip the free end of the bent tube in a beaker of coloured water.
Leave it for a day. Note the changes.
The germinating seeds respires aerobically by utilizing the oxygen in the flask.
Carbon dioxide released during the aerobic respiration is absorbed by potassium hydroxide and creates a vacuum and causes rise of water in the bent tube.
If we put a burning candle in the setup, the candle extinguishes which proves oxygen is utilized by germinating seed for respiration.