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प्रश्न
Explain the Term Free Energy.
उत्तर
Free Energy: The amount of energy in the reactions available to do work. Because most biochemical reactions occur at a constant temperature and pressure.
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संबंधित प्रश्न
Answer the following:
Mention two significant advantages of photosynthesis to the living world as a whole.
Define the following:
Organic food
The specific function of light energy in the process of photosynthesis is to
Mention one difference between the following on the basis of what is given in bracket.
Respiration and photosynthesis (gas released)
Identify the false statement and rewrite it correctly by changing the first or last word only.
Green plants perform photosynthesis.
The site of light reaction in the cells of a leaf is ______.
Give technical term:
Organisms which cannot prepare their own food by photosynthesis.
Complete the following sentence with appropriate word:
4OH ——> _____ + O2
Choose the correct option.
A cell that lacks chloroplast does not ______.
Fill in the blank by rearranging the letter in the bracket.
Pigment involved in the food synthesis is _________ (phllylochor).
To which directional stimuli do
- roots respond
- shoots respond?
Higher Order Thinking Skill.
Imagine that student A studied the importance of certain factors in photosynthesis. He took a potted plant and kept it in dark for 24 hours. In the early hours of the next morning, he covered one of the leaves with dark paper in the centre only. Then he placed the plant in sunlight for a few hours and tested the leaf which was covered with black paper for starch.
- What aspect of photosynthesis was being investigated?
- Why was the plant kept in the dark before the experiment?
- How will you prove that starch is present in the leaves?
- Name the raw materials needed for photosynthesis.
Why should the light-dependent reaction occur before the light-independent reaction?
The role of chlorophyll is to absorb light from the sun.
The bending of shoot towards light is due to the hormone ______.
Study the pictures below and then complete the table by putting a plus (+) if the shoot or root grows towards the stimulus and a minus (-) if it grows away from it.
| Stimulus | Light | Gravity |
| Shoot | + | - |
| Root | ? | + |
Define photosynthesis.
Label the diagram with the raw materials and products of photosynthesis.
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.
