Question

2 Explain about hydrilla expariment ,​

Answer 1

Answer:

the answer is

Explanation:

while removing testtube , place your thumb near mouth of testtube to prevent escape of gas evolved and remove gently.place hydrilla plant twigs in a short stemmed funnel and keep it in a beaker containing water.

Answer 2

Answer:

See the explanation⤵

Explanation:

Nazmasulthana Ambitious

INTRODUCTION:The end products of photosynthesis are Oxygen(O2),water and starch.So one of the end products is oxygen ,which is proved by this experiment.

AIM:To prove oxygen is evovled during photosynthesis in the presence of sunlight.

APPARATUS:Beaker,water,test tube,hydrilla plant twigs,funnel and sunlight

PRECAUTION:-Setup should be kept in sunlight

-The level of water in the beaker should be over the level of stem of the inverted funnel

-While removing testtube ,place your thumb near mouth of testtube to prevent escape of gas(oxygen) evolved and remove gently.

PROCEDURE:1)Place hydrilla plant twigs in a short stemmed funnel and keep it in a beaker containing water.

2)Invert a test tube full of water over the stem of the funnel

3)Place the apparatus in the sun for at least 2-3 hours.

4)After sometime observe the apparatus

OBSERVATION:1)Gas bubbles i,e.,oxygen is produced at the end of test tube and remove the test tube gently.

2)Test the gas in the testtube by inserting a glowing incense stick which would burst into flames.

3)This shows the presence of oxygen.

RESULT:By this experiment, we proved that oxygen is produced during photosynthesis in the presence of sunlight.

Hope you will get it easily

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