Group presentation My topic: Experiment to show heat is evolved during germination of seeds.

1. Group presentation My topic: • Experiment to show heat is evolved during germination of seeds. • Experiment to show that root absorbs water BY: Dawa Tshering

2. Aim of the experiment: • to show that heat is evolved during respiration Materials required: • Conical flask • Seeds ( about 200 in numbers) • Thermometer • Antiseptic • Grease • Rubber cork • Spirit lamp • Match box • Tripod stand

3. Principles: • germinating seeds produce heat due to respiration. Procedures: • A day before we soaked collected dried seeds in water to make it wet so that the seeds germinate. (24 hours ) • Next day we collected the required materials for the experiment and proceeded with our experiment. • First we divided the seeds into two equal groups and boiled one group of seeds to kill. Then the boiled seeds is washed with antiseptic to prevent from bacterial decay. • After that we named two conical flask “A” and “B”. To conical flask “A” we put live seeds and dead seeds to “B”. To each flask we inserted thermometer each with the cork to make it air tight. • After the set up we left it for observation.

4. Experimental set up

5. Observation: After one day

6. Inference: • Germinating seeds produces heat as a result of respiration. Precaution • make sure that boiled seeds are dead • take care when handling with glass apparatus • make sure you wash dead seeds with antiseptic to prevent bacterial decay.

7. Aim of the experiment: • to show that roots absorbs water. Materials required: • Test-tube • Young Leafy shoot with intact root • mustered oil • test-tube stand Principle: • roots absorbs water and supports the entire plant Procedure: • we collected the required materials for the experiment • we named two test-tube “P” and “Q” and then filled test-tube “Q” with water and marked the level. To test-tube “p” we inserted leafy shoots with intact roots with same level of water. • after that we put few drops of mustered oil in both test-tube to prevent loss of water by evaporation.

8. then only we placed both the setup in test-tube stand and then left the set up under observation. Observation Next day

9. Experimental set up

10. Inference: • Roots of the plant absorbs water and helps the entire plant. Precaution • be careful when handling with glass apparatus • make cure that plant taken for the experiment has intact roots

11. Thank You