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प्रश्न
Describe an experiment to prove that sunlight is necessary for photosynthesis.
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उत्तर
Experiment to prove that sunlight is necessary for photosynthesis:
a. A potted plant is kept in the dark for two days to destarch the leaves.
b. A part of a leaf is covered with a black paper by clip.
c. Now the plant is kept in the light for few hours.
d. The leaf is plucked and is boiled in water and is then decolourized with
alcohol.
e. The portion of leaf which received light turns blue with iodine because
photosynthesis took place in that part of leaf.
f. The part of leaf which was covered with black paper remains colourless
because photosynthesis could not take place in the absence of sunlight.
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संबंधित प्रश्न
Give biological reasons for the following statements : In some xerophytes leaves are modified into spines
The diagram given below represents an experiment to prove the importance of a factor in photosynthesis. Answer the questions that follow:
- Name the factor studied in this experiment.
- What will you observe in the experimental leaf after the starch test?
- Explain the process of photosynthesis.
- Give a balanced chemical equation to represent the process of photosynthesis.
- Draw a neat, labelled diagram of an experimental setup to show that oxygen is released during photosynthesis.
Answer the following:
Give the overall chemical equation of photosynthesis in green plants.
Distinguish between the following:
Photosynthesis and photophosphorylation.
The following statement is about photosynthesis in a green plant. Write whether it is True or False.
Photosynthesis occurs in underground organs as well as in aerial ones.
Fill in the blanks:
The end products of photosynthesis are ______ and ______.
Explain the Term ATP.
Write the functional activity of the following structure:
Granum
When iodine solution is added for testing starch, part of the leaf with ______ turns a blue-black color.
Given below are groups of terms. The first pair indicates the relationship between the two terms. Complete the second pair accordingly.
Producers : Autotrophs : : Consumers : ______
