Advertisements
Advertisements
प्रश्न
A plant is kept in a dark cupboard for 48 hours before conducting any experiment on photosynthesis in order to
पर्याय
remove chlorophyll from leaves
remove starch from the leaves
ensure that no photosynthesis occurred
ensure that the leaves are free from starch
Advertisements
उत्तर
ensure that the leaves are free from starch
संबंधित प्रश्न
Name the following:
The products that are formed as a result of photosynthesis.
Fill in the blank:
______ is the process which replenishes the atmospheric oxygen which the animal life consumes in respiration.
Fill in the blanks:
The end products of photosynthesis are ______ and ______.
How does carbon dioxide return to the atmosphere? Explain.
A student in order to study the importance of certain factors of photosynthesis took a potted plant and kept it in the dark for over 24 hours. Then in the early hours of the morning the student covered one of the leaves with black paper in the centre only. Student placed the potted plant in the sunlight for a few hours, and then tested the leaf which was covered with black paper for starch.
(i) What aspect of photosynthesis was being investigated?
(ii) Is there any control in this experiment? If so, state the name.
(iii) Why was the plant kept in the dark before the experiment?
(iv) Describe step by step how the candidate proceeded to test the leaf for the presence of starch.
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.
Grass and grasshopper (mode of nutrition)
Complete the following food chains by writing the names of appropriate organisms in the blanks:
Grass → ______ → Snake → ______
Explain the term Phosphorylation.
Complete the following sentence with appropriate word:
4OH ——> _____ + O2
Autotrophs use _____,______ and chlorophyll to prepare their own food.
