MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Test for Oxygen

An experiment...

Question

An experiment was set up as shown in the figure alongside. Look at the figure and answer the following questions:
(i) What is the objective of this experiment?
(ii) Which plant is used in this experiment?
(iii) Which gas is evolved in this process?
(iv) What will happen to the rate of evolution of this gas if a pinch of sodium bicarbonate is added?
(v) What will happen if the apparatus is kept in dark?
Figure

Open in App

Solution

(i) The objective of this experiment is to show that oxygen is evolved during photosynthesis.

(ii) Hydrilla is used in this experiment.

(iii) Oxygen is evolved during this process.

(iv) The rate of evolution of oxygen will increase, as the amount of carbon dioxide will increase on adding sodium bicarbonate. This will result in an increase in the rate of photosynthesis.

(v) If the apparatus is kept in dark, no photosynthesis will take and no oxygen will be evolved.

Suggest Corrections

thumbs-up

0

Similar questions

Q. Look at the diagram of an experiment shown here and answer the questions.
Figure

(a) What are the reactants?
(b) Name the gas that is evolved in this reaction.
(c) Write a balanced chemical equation for this reaction.

Q. In an experiment demonstrating the evolution of oxygen in Hydrilla, sodium bicarbonate is added to water in the experimental set-up. What would happen if all other conditions are favorable?

Q. The apparatus arranged alongside signifies an important process.
(i) Name the process.
(ii) Where does this process occur in plants?
(iii) What solution is placed inside the dialysis tubing?
(iv) What happens to the level of the solution in the capillary tube?
Figure

Q. Two healthy green plants were places in the dark for 24 hours. They were then set up, as shown in the figure, for 4 hours. Then a leaf was taken form each plant and the chlorophyll was removed from the leaves:
(i) What is the next and final step in this experiment?
(ii) What would be the results of the final step?
(iii) Why was it necessary to grease the glass sheet?
(iv) What hypothesis is being tested in this experiment?
Figure

Q. An apparatus as shown was set up to investigate a physiological process in plants. The setup was kept in sunlight for two hours. Droplets of water were then seen inside the bell jar. Answer the questions that follow.

(i)

Name the process being studied.

(i i)

Explain the process named above in

(i)

.

(i i i)

Why was the pot covered with a plastic sheet?

(i v)

Suggest a suitable control for this experiment.

(v)

Mention two ways in which this process is beneficial to plants.

(v i)

List three adaptations in plants to reduce the above-mentioned process.

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Test for oxygen

BIOLOGY

Watch in App

explore_more_icon

Explore more

Test for Oxygen

Standard X Biology

Join BYJU'S Learning Program

CrossIcon