we have conducted the Enpaiment that
of
oxygen
proves the release
when
photosynther's happene?
?
a). what are the plants used for this experiment where
do they grow
you conduct the above experiment 8 in
large number of air bubbles released
bi How did
which context are
Did
nou
noticed
you
Answers
Explanation:
Aim : To prove that oxygen is produced during photosynthesis by Hydrilla funnel experiment.
Apparatus: Beaker with water , test tube , funnel, hydrilla plant, glowing splinter.
Procedure:
1) Arrange the apparatus as shown in the figure.
2) Place some water plant like Hydrilla in a short stemmed funnel and keep it in a beaker.
3) Then pour the water in the beaker.
4) Invert a test - tube full of water over the stem of the funnel.
5) Ensure that the level of water in the beaker is above the level of stem of the inverted funnel.
6) Place the apparatus in the sunlight for at least 8 -9 hours.
Observation :
1) After sometime it is observed that gas bubbles coming from the hydrilla plant. These bubbles are collected at the end of the test tube pushing the water into the beaker.
2) After sufficient gas is collected, test - tube is taken out of the beaker carefully by closing it with thumb.
Test : Test the gas in the test - tube by inserting a glowing incense stick which would burst into flames. This shows the presence of oxygen :
Result : This shows that oxygen is produced during photosynthesis.
Precautions :
1) Funnel should be smaller than the beaker.
2) Care should be taken while removing test tube from the stem of funnel.
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Answer:
Explanation:
In plants, photosynthesis takes place in chloroplasts, which contain the chlorophyll. ... The green pigment chlorophyll is located within the thylakoid membrane, and the space between the thylakoid and the chloroplast membranes is called the stroma
(i) In the given experiment, bubbles of oxygen are released due to the process of light reaction of photosynthesis.
(ii) Photosynthesis is a process in which green plants (plant cells having chlorophyll) take in carbon-dioxide and water in presence of sunlight to produce glucose. It releases oxygen gas during the photolysis of water which is a part of the light reaction.
(iii) The purpose of keeping the snail in the test tube B is the production of carbon dioxide which is used by the plant.
(iv) Test tube B have more bubbles of oxygen because the rate of photosynthesis is more in test tube B as it gets more CO
2
from the snail.
(v) Hydrilla is a water plant which is used for such experiments.
(vi) 6CO
2
+12H
2
O
light
chlorophyll
C
6
H
12
O
6
+6H
2
O+6O
2
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