Advertisements
Advertisements
प्रश्न
Choose the Correct Answer:
A plant is kept in a dark cupboard for about 48 hours before conducting any experiment on photosynthesis to:
पर्याय
Remove starch from the plant
Ensure that starch is not translocated from the leaves
Remove chlorophyll from the leaf of the plant
Remove starch from the experimental leaf
उत्तर
Ensure that starch is not translocated from the leaves
APPEARS IN
संबंधित प्रश्न
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 :
What will you observe in the experimental leaf after the starch test?
State the main functions of the following:
Cytokinins
Define the following:
Organic food
Mention two ways in which photosynthesis is useful to life.
Fill in the blanks:
The end products of photosynthesis are ______ and ______.
Complete the following by filling in the blanks numbered 1 to 10 with the appropriate word/term:
Photosynthesis involves light reaction and dark reaction. During light reaction, the chlorophyll present in the (1) ______ gets activated by absorbing light energy. This energy splits (2) ______ molecules to (3) ______ and oxygen and releases two electrons. This process is called (4) ______. The (5) ______ ions are picked up by NADP to form (6) ______. The ADP is converted to (7) ______. This process is called (8) ______. During the dark phase, the compound produced at the end of the light reaction reacts with carbon dioxide to form (9) ______. This product is converted to starch. The process is called (10) ______.
Name the following:
The first form of food substance produced during photosynthesis.
Mention one difference between the following on the basis of what is given in bracket.
Grass and grasshopper (mode of nutrition)
"Oxygen is a waste product of photosynthesis." Comment.
Complete the following food chains by writing the names of appropriate organisms in the blanks:
Grass → ______ → Snake → ______
A candidate studied the importance of certain factors in photosynthesis. He took a potted plant and kept in the dark for over 24 hours. In the early hours of the next morning, he covered one of the leaves with black 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?
Explain the Term Free Energy.
Complete the following sentence with appropriate word:
A plant that does not perform photosynthesis is _______.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Radiant energy is converted into chemical energy by photosynthesis.
Autotrophs use _____,______ and chlorophyll to prepare their own food.
Which one of the following is a primary producer?
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.
