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प्रश्न
During photosynthesis, the oxygen in glucose comes from
विकल्प
CO2
water
both CO2 and water
oxygen via air
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उत्तर
CO2
संबंधित प्रश्न
A potted plant was taken in order to prove a factor necessary for photosynthesis. The potted plant was kept in the dark for 24 hours. One of the leaves was covered with black paper in the centre. The potted plant was then placed in sunlight for a few hours.
(i) What aspect of photosynthesis was being tested?
(ii) Why was the plant placed in the dark before beginning the experiment?
(iii) During the starch test, why was the leaf
(1) boiled in water
(2) boiled in methylated spirit
(iv) Write a balanced chemical equation to represent the process of photosynthesis.
(v) Draw a neat diagram of a chloroplast and label its parts.
Complete the following paragraph by filling in the blank (1) to (5) with appropriate words:
To test a leaf for starch, the leaf is boiled in water to (1) _________. It is then boiled in Methylated spirit to (2) ________. The leaf is dipped in warm water to soften it. It is placed in a petri dish, and (3) _____ solution is added. The region of the leaf which contains starch, turns (4) ________and the region while does not contain starch, turns (5) __________.
The production of starch, and not glucose, is often used as a measure of photosynthesis in leaves because
The number of water molecules required in the chemical reactions to produce one molecule of glucose during photosynthesis is
Name the following:
The tissue that transports manufactured type of starch from leaves to all parts of the plants.
Respiration is said to be the reversal of photosynthesis.
Give technical term:
Which process is the ultimate source of energy for all living organisms?
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
KOH absorbs CO2.
The chemical reaction occurs during photosynthesis is ______.
Guard cells of stomata are green but cannot photosynthesize? Give reason.
