Advertisements
Advertisements
प्रश्न
Describe an experiment to prove that sunlight is necessary for photosynthesis.
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
Give appropriate biological/technical terms for the following:
An apparatus that measures the rate of water uptake in a cut shoot due to transpiration.
Fill in the blank:
______ is the process which replenishes the atmospheric oxygen which the animal life consumes in respiration.
If the rate of respiration becomes more than the rate of photosynthesis, plants will:
The specific function of light energy in the process of photosynthesis is to
Name the following:
The category of organisms that prepare their own food from basic raw materials.
Name the membrane that connects thylakoid of one granum With the other granum.
What is the importance of photosynthesis in the life of the following:
Green plants
______ is ATP factory of the cells.
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 | ? | + |
