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प्रश्न
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.
Is there any control in this experiment? If so, state it.
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उत्तर
Yes. The other uncovered leave of the potted plant act as a control.
संबंधित प्रश्न
"Oxygen is a waste product of photosynthesis." Comment.
Complete the following food chain by writing the names of appropriate organisms in the blanks:
__________ → Mouse → _________ → Peaock
Explain the term Plastoquinone.
Write the functional activity of the following structure:
Granum
Write the functional activity of the following structure:
Stroma
Write the functional activity of the following structure:
Chloroplasts
Choose the correct option.
A cell that lacks chloroplast does not ______.
The bending of shoot towards light is due to the hormone ______.
Study the diagram given below and fill in the blanks with suitable words:
In order to prove that carbon dioxide is necessary for
(a) ______, a potted plant is placed in dark for 48 hours to (b) ______ the leaves. A part of a leaf is inserted into a conical flask containing potassium hydroxide solution. This is to absorb (c) ______ from the flask. The plant is then placed in sunlight for a few hours. The experimental leaf is tested for starch. The part of the leaf that was inside the conical flask turns (d) ______, whereas the part of the left outside turns (e) ______ in colour.
