demonstrate with the help of an experiment that oxgen is given out by the green plants during daytime
Answers
Explanation:
This energy is used by the plant for carrying out its various life processes. ... can independently take in oxygen from air, utilize it to obtain energy, and give out carbon dioxide. Respiration in plants happens throughout the day and night thereby
Kindly mark me as brainliest...
Answer:
Explanation:
Materials Needed:
elodea (water plant)
lamp (40 watt)
test tube
razor blade (single-edge)
dechlorinated water (room temperature)
tape
sodium bicarbonate powder (baking soda)
clock or timer
metal stand with rod or test tube rack
metric ruler
Strategy:
1. Get a sprig of elodea. Remove several leaves from around the cut end of the stem. Slice off a portion of the stem at an angle and lightly crush the cut end of the stem.
2. Place the plant into the test tube, stem end up, filled with water.
3. Secure the test tube to a metal stand with tape or place the test tube in a test tube rack.
PART B. Running the Experiment
1. Place a 40 watt lamp 5 cm from the plant. After one minute, count and record the number of oxygen bubbles rising from the cut end of the stem.
Count bubbles for five minutes. If bubbles fail to appear, cut off more of the stem and recrush.
2. Run a second five-minute trial. Record and average your results.
3. Move the lamp so it is 20 cm from the plant. After one minute count and record bubbles for two five-minutes trials. Again, average and record your results.
4. Add a pinch of sodium bicarbonate powder to the test tube. Place the lamp 5 cm from the test tube. After one minute, record bubbles for two five-minute trials. Average and record your results.
5. Prepare a graph of your results. Use the average number of bubbles for the vertical axis. Use the type of environmental condition for the horizontal axis.
Plants use green pigments called chlorophylls to trap light energy. The chlorophylls give a plant its green color. Inside the cells that have chloroplasts, the light energy is used to make a simple sugar called glucose.
The process by which plants use light energy to make glucose is called photosynthesis.
During this process of sugar production, carbon dioxide combines with water to
form glucose and oxygen is released. Oxygen that is produced in photosynthesis
is given off as a gas. If a lot of oxygen is being given off, photosynthesis is
occurring rapidly. If little oxygen is being given off, photosynthesis is
occurring slowly. The amount of trapped light energy and the amount of carbon
dioxide available affects the rate of photosynthesis.
The purpose of adding sodium bicarbonate powder to the water increases the amount of carbon dioxide in the water..
This investigation can be performed with water plants grown in many parts of
the world, except regions that have permanent ice.
OR THIS IS EASIER EXPERIMENT
This investigation can be performed with water plants grown in many parts
Put a water plant in brothymul blue and blow carbon dioxide into it until it turns yellow. Put the plant in light and if it turns blue again then it gave off oxygen. THANK YOU..HOPE THIS WOULD HELP YOU..