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प्रश्न
Complete the following paragraph by filling in the blank (1) to (5) with appropriate words:
To test a leaf for starch, the leaf is boiled in water to (1) _________. It is then boiled in Methylated spirit to (2) ________. The leaf is dipped in warm water to soften it. It is placed in a petri dish, and (3) _____ solution is added. The region of the leaf which contains starch, turns (4) ________and the region while does not contain starch, turns (5) __________.
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उत्तर
1) to kill the cells
2) remove the chlorophyll
3) Iodine solution
4) blue-black in colour
5) brown
APPEARS IN
संबंधित प्रश्न
The diagram below shows two test-tubes A and B. Test-tube A contains a green water plant. Test-tube B contains both a green water plant and a snail. Both testtubes are kept in sunlight. Answer the questions that follow:
(i) Name the physiological process that releases the bubbles of oxygen.
(ii) Explain the physiological process as mentioned above in Q2 (a)(i).
(iii) What is the purpose of keeping a snail in test-tube ‘B’?
(iv) Why does test-tube ‘B’ have more bubbles of oxygen?
(v) Given an example of a water plant that can be used in the above process.
(vi) Write the overall chemical equation for the above process.
Distinguish between the following:
Photosynthesis and photophosphorylation.
The diagram alongside represents an experiment conducted to prove the importance of a factor in photosynthesis.
Study the same and then answer the questions that follow:
(i) Name the factor being studied in his experiment.
(ii) Why was the plant kept in a dark room before conducting the experiment?
(iii}Why was the experimental leaf then kept in
1. boiling water 2. methylated spirit?
(iv) Name the solution used to test for the presence of starch in the leaf.
(v) What will we observe in the experimental leaf at the end of the starch test?
(vi) Give a balanced chemical equation to represent the process of photosynthesis.
Name the following:
The first form of food substance produced during photosynthesis.
Are the following statement true or false? Give a reason in support of your answer.
The rate of photosynthesis continues to rise as long as the intensity of light rises.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
The raw materials for photosynthesis include water and CO2.
Choose the correct option.
The net result of photo-oxidation of water is release of ______.
Plants utilize only ______% of the absorbed water for photosynthesis and the other activities.
Assertion (A): All food chains begin with herbivores.
Reason (R): Green plants are heterotrophs.
Which of the following is not applicable to the process of photosynthesis?
