Advertisements
Advertisements
Question
Write an experiment to demonstrate that CO2 is necessary for photosynthesis.
Advertisements
Solution
Take a destarched plant. Insert one of its leaves in a conical flask, which contains potassium hydroxide. Leave it in the sunlight. After a few hours, test this and any other leaf of this plant for starch. The leaf which was exposed to the atmospheric air becomes blue-black, and the one in the flask containing KOH does not become blue-black after the iodine test. The experiment showing that CO2 is necessary for photosynthesis.
APPEARS IN
RELATED QUESTIONS
Given below is an experiment setup to demonstrate a particualr tropic movement in germinating seeds. Study the diagram and answer the questions that follow :
(ii) Name the tropic movement shown by part 1.
The diagram given below represents an experiment to prove the importance of a factor in photosynthesis. Answer the questions that follow :
What will you observe in the experimental leaf after the starch test?
Fill in the blank:
______ is the process which replenishes the atmospheric oxygen which the animal life consumes in respiration.
Choose the correct answer:
Which of the following gas is used in photosynthesis?
The number of water molecules required in the chemical reactions to produce one molecule of glucose during photosynthesis is
Complete the following sentence with appropriate word:
A light reaction is a ___________ reaction.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Radiant energy is converted into chemical energy by photosynthesis.
Choose the Correct Answer:
Which one of the following would not be a limiting factor for photosynthesis?
Fill in the blank by rearranging the letter in the bracket.
During photosynthesis plants releases _________ (egxyno).
The raw materials for photosynthesis are ______ and ______.
