Quick Answer: What Would Happen If KOH Solution Is Not Hung In Conical Flask?

Why should the seed be kept moist during the experiment?

The seeds are required to be kept moist so that there is enough amount of water for the growth and production of the new parts in the seeds.

If there is no moisture, the cells in the seeds will dry up.

The cells cannot perform respiration..

Which seeds are used in the experiment to show that carbon dioxide is given out during respiration?

The process of respiration is biochemically carried out wherein food, glucose to be precise is oxidized and energy is released. In this experiment, gram seeds (moistened) are used. The purpose of using these seeds is that they release carbon dioxide and are respiring actively.

Why is Vaseline used in the experiment?

Vaseline is used in this experiment to prevent escape of carbon dioxide making the apparatus air tight.

How can we make the connections airtight in the set up?

Seal all the connections of the experimental set-up with vaseline so as to make it air-tight. Mark the initial level of water in the U-shaped delivery tube. Keep the apparatus undisturbed for 1-2 hours and note the change in level of water in the delivery tube.

What would happen if seeds are not kept moist during experiment?

Seeds require water for growth. If there s no water content or moisture in the seeds, then the seeds would dry up and the rate of respiration will fall.

Why is there a rise in water level in the delivery tube?

The water rises in delivery tube due to the development of partial vacuum inside it . This happens because the carbon-dioxide released by the germinating seeds will be soaked by potassium hydroxide present in the flask containing those seeds.

Can you design any other experiment setup for testing that co2 is produced during respiration?

Answer. AIM-To show experimentally that carbon dioxide is released during respiration. Materials Required: A conical flask, a beaker, a cork with a hole, a glass tube bent at right angles at two places, a small test tube, KOH solution, thread, coloured water. Vaseline and germinating seeds of gram or pea.

Why is some koh placed in a small test tube in the flask with germinating seeds?

Why is some KOH placed in a small test tube in the flask with germinating seeds in the experiment to demonstrate occurrence of respiration in germinating seeds? To provide oxygen required by the seeds for respiration. To absorb carbon dioxide and create partial vacuum in the flask.

What would happen if test tube containing a solution is removed from the conical flask in the setup?

If KOH solution is not hung in conical flask during experiment, the CO2 required during photosynthesis will not be absorbed due to which the inserted part in the test tube would have also shown the presence of starch. In such a case, no conclusion could have been drawn from the experiment.

Why KOH solution is kept in the test tube inside the airtight conical flask?

Answer. KOH solution kept in the test-tube inside the air-tight conical flask absorbs the evolved carbon dioxide released by germinating seeds; thereby creating a partial vacuum in the conical flask. So, an equal volume of water rises up in the tube.

Why do we use KOH solution and germinating seeds?

When water level rises in the tube, it indicates that carbon dioxide is produced by germinating seeds.So, the role of KOH here is that it absorbs the carbon dioxide gas which creates a vacuum in conical flask and finally pulls the water in the bent tube which proves respiration in plants.