Question

How can we prove that the gas evolved during photosynthesis is oxygen

Answer 1

Answer:

by hydrilla experiment

Explanation:

INTRODUCTION :- the end product of photosynthesis are oxygen, water and starch

so one of the end product is oxygen, which is proved by this experiment

AIM :- to prove oxygen is evolved during photosynthesis in the presence of sunlight

APPARATUS :- Breaker, water, test tube, hydrilla plant twigs

PROCEDURE :-

1. place hydrilla plant twigs in a short stemmed funnel and keep it in breaker containing water
2. invert a test tube full of water over the stem of the funnel
3. place the apparatus in the sun for atleast 2-3hours
4. after sometime observe the apparatus

OBSERVATIONS :- gas bubble that Is oxygen

is produced at the end of the test tube

• remove the test tube gently
• test the gas in the test tube by inserting a glowing incense sticks which would burst into flames
• this show lresence of oxygen

Answer 2

Answer:

aim to produce that the gas evolved