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प्रश्न
Briefly explain the following terms: Photophosphorylation
उत्तर
Photophosphorylation:
The process by which a phosphate moiety is added to an ADP molecule using light energy to form an energy-rich ATP molecule is known as photophosphorylation. In photosynthetic plants, photophosphorylation occurs by two pathways—cyclic and non-cyclic.
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संबंधित प्रश्न
The individual flattened stacks of membranous structures inside the chloroplasts are known as :
A. Grana
B. Stroma
C. Thylakoids
D. Cristae
Expand the following biological abbreviations: ATP
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.
State the main functions of the following:
Medulla Oblongata
Name the following:
The principle site in a green leaf for photosynthesis.
Name the following:
Three organisms that cannot prepare their own food by photosynthesis.
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.
Choose the correct answer:
Which of the following gas is used in photosynthesis?
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 ______.
Photosynthesis in green plants is directly and indirectly dependent on so many plant structures.
Explain briefly the role of the following structures in this process is Stomata.
Respiration is said to be the reversal of photosynthesis.
Explain the term Phosphorylation.
Choose the correct option.
Energy is transferred from the light reaction step to the dark reaction step by ______.
Gas exchange takes place in plants using _____.
What is photosynthesis and wherein a cell does occur?
Plants inhale and exhale continuously through the ______.
Draw the structure of the stomata and label the parts.
A potted plant with variegated leafes was kept in dark for 24 hours and then placed in bright sunlight. Answer the following questions.
- Which aspect of photosynthesis is being tested in the above diagram?
- Why was the plant kept in the dark for 24 hours?
- After the starch test, what will be the colour of the yellow and green parts of the leaf? Give reasons to support your answer.
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.
