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प्रश्न
The following statement is about photosynthesis in a green plant. Write whether it is True or False.
Photosynthesis results in a gain in dry weight.
विकल्प
True
False
उत्तर
True
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.
Identify the odd one in each set : Transpiration, Photosynthesis, Phagocytosis, Guttation
Give one example of An aquatic plant used in the laboratory to demonstrate O2 liberation during photosynthesis
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.
Define the following:
Organic food
The following statement is about photosynthesis in a green plant. Write whether it is True or False.
Land plants obtain their carbon dioxide from the atmosphere.
How does carbon dioxide return to the atmosphere? Explain.
A student in order to study the importance of certain factors of photosynthesis took a potted plant and kept it in the dark for over 24 hours. Then in the early hours of the morning the student covered one of the leaves with black paper in the centre only. Student placed the potted plant in the sunlight for a few hours, and then tested the leaf which was covered with black paper for starch.
(i) What aspect of photosynthesis was being investigated?
(ii) Is there any control in this experiment? If so, state the name.
(iii) Why was the plant kept in the dark before the experiment?
(iv) Describe step by step how the candidate proceeded to test the leaf for the presence of starch.
Mention one difference between the following on the basis of what is given in bracket.
Producers and consumers (mode of nutrition)
The site of light reaction in the cells of a leaf is ______.
"Oxygen is a waste product of photosynthesis." Comment.
Complete the following food chain by writing the names of appropriate organisms in the blanks:
__________ → Mouse → _________ → Peaock
Write an experiment to demonstrate that CO2 is necessary for photosynthesis.
Explain the Term Calvin Cycle.
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.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
KOH absorbs CO2.
Where do the light-dependent reaction and the Calvin cycle occur in the chloroplast?
Which gas evolved during photosynthesis?
Study the diagram given below and fill in the blanks with suitable words:
In order to prove that carbon dioxide is necessary for
(a) ______, a potted plant is placed in dark for 48 hours to (b) ______ the leaves. A part of a leaf is inserted into a conical flask containing potassium hydroxide solution. This is to absorb (c) ______ from the flask. The plant is then placed in sunlight for a few hours. The experimental leaf is tested for starch. The part of the leaf that was inside the conical flask turns (d) ______, whereas the part of the left outside turns (e) ______ in colour.
Distinguish between the following pairs on the basis of the word indicated in the bracket ( ).
Producers and Consumers (organisms)
