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प्रश्न
The figure below represents an experiment performed to demonstrate a particular aspect of photosynthesis. The apparatus was kept in sunlight for almost the whole day. The numeral ‘1’ represents a certain condition inside the flask and the numeral ‘2’ represents a chemical responsible for this condition.
(i) What is the object of the experiment?
(ii) What is the special condition inside the flask?
(iii) What is the chemical substance numbered ‘2’?
(iv) In what way will the three leaves (A, B, and C) differ at the end of the experiment, when tested with iodine solution?
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उत्तर
(i) The object of this experiment is to show that CO2 is necessary for photosynthesis.
(ii) The special condition inside the flask is that there is no CO2 in the air as it has been absorbed by the KOH.
(iii) KOH or NaOH pellets.
(iv) Leaf A will be yellowish-white. Leaf B and Leaf C will turn blue-black.
APPEARS IN
संबंधित प्रश्न
(i) Identify the above diagram.
(ii) Label the guidelines 1-3.
(iii) Name the phenomenon which takes place in the above diagram.
(iv) Define the phenomenon.
(v) What is the importance of the above phenomenon?
A well-watered healthy potted plant with variegated leaves was kept in darkness for about 24 hours. It was then set up as shown in the diagram and exposed to light for about 12 hours. At the end of this time, leaf X and leaf Y were tested for starch. Study the diagram and answer the questions that follow:
(i) Why was the plant initially kept in darkness for 24 hours?
(ii) What is the function of the sodium hydroxide solution in the flask?
(iii) Select the correct leaf from the five available choices shown in the diagram as A, B, C, D, and E. Rewrite the correct answer for the filling in the appropriate letter from the questions that follow:
1. After the starch test, leaf X would look like.
2. After the starch test, leaf Y would look like.
Name the following:
The principal site in a green leaf for photosynthesis.
Give technical term:
Name the structure where photophosphorylation takes place.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
The process of photosynthesis takes place in the dark.
Draw a neat, labelled diagram of a chloroplast.
The colour of VIBGYOR spectrum, which is reflected by chlorophyll, is ______.
Given below are groups of terms. The first pair indicates the relationship between the two terms. Complete the second pair accordingly.
Chlorophyll : Magnesium : : Haemoglobin : ______
Define the following term:
Chloroplast
Distinguish between the following pairs on the basis of the word indicated in the bracket ( ).
Stoma and Stroma (structure)
