Advertisements
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
Formalin, Iodine, DDT, Lime
The figure given below represents an experimental setup with a weighing machine to demonstrate a particular process in plants. The experimental setup was placed in bright sunlight. Study the diagram and answer the following questions:
(i) Name the process intended for study.
(ii) Define the above mentioned process.
(iii) When the weight of the test tube (A & B) is taken before and after the experiment, what is observed? Give reasons to justify your observation in A & B.
(iv) What is the purpose of keeping the test tube B in the experimental setup?
A potted plant was taken in order to prove a factor necessary for photosynthesis. The potted plant was kept in the dark for 24 hours. One of the leaves was covered with black paper in the centre. The potted plant was then placed in sunlight for a few hours.
(i) What aspect of photosynthesis was being tested?
(ii) Why was the plant placed in the dark before beginning the experiment?
(iii) During the starch test, why was the leaf
(1) boiled in water
(2) boiled in methylated spirit
(iv) Write a balanced chemical equation to represent the process of photosynthesis.
(v) Draw a neat diagram of a chloroplast and label its parts.
Expand the following biological abbreviations: ATP
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.
The diagram given below represents an experiment to prove the importance of a factor in photosynthesis. Answer the questions that follow :
Explain the process of Photosynthesis.
State the main functions of the following:
Cytokinins
Fill in the blank:
______ is the process which replenishes the atmospheric oxygen which the animal life consumes in respiration.
The production of starch, and not glucose, is often used as a measure of photosynthesis in leaves because
Identify the false statements and rewrite them correctly by changing the first or last word only.
Immediate product of photosynthesis is glucose.
What is the importance of photosynthesis in the life of the following:
Non-green plants
What is meant by the photolysis of water?
Explain the Term Free Energy.
Give technical term:
The form of energy is converted into chemical energy during photosynthesis.
Give technical term:
In photosynthesis radiant energy is converted into which from?
Choose the Correct Answer:
Which one of the following would not be a limiting factor for photosynthesis?
Oxygen is produced at what point during photosynthesis?
Where do the light-dependent reaction and the Calvin cycle occur in the chloroplast?
Read the following sentences about photosynthesis.
- Sunlight, carbon dioxide, chlorophyll and water are necessary.
- Oxygen is absorbed.
- Leaves carry out photosynthesis.
- Proteins are made during photosynthesis.
Choose the correct pair of sentences that are true to photosynthesis.
1. What happens to the dandelion flower
- During the daytime?
- At night?
2. What is the phenomenon known as?