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Question
"Oxygen is a waste product of photosynthesis." Comment.
Solution
Oxygen is released during photosynthesis. Some of this oxygen may be used in respiration in the leaf cells, but the major portion of it is not required and it diffuses out into the atmosphere through the stomata. However, in a sense, even this oxygen is not a waste because all organisms require it for their existence including the plants.
RELATED QUESTIONS
The diagrams given below represent the relationship between a mouse and a physiological process that occurs in green plants. Study the diagrams and answer the questions that follow
(i) Name the physiological process occurring in the green plant that has kept the mouse alive.
(ii) Explain the physiological process mentioned above.
(iii) Why did the mouse die in bell jar B?
(iv) What is the significance of the process as stated in (i) for life on earth?
(v) Represent the above mentioned physiological process in the form of a chemical equation.
Mention two ways in which photosynthesis is useful to life.
Identify the false statements and rewrite them correctly by changing the first or last word only.
Immediate product of photosynthesis is glucose.
The site of light reaction in the cells of a leaf is ______.
Photosynthesis in green plants is directly and indirectly dependent on so many plant structures.
Explain briefly the role of the following structures in this process is Phloem tissue in the leaf veins.
What are the basic requirements of photosynthesis?
What is the law of limiting factors?
Explain the Term Free Energy.
Explain the term Plastoquinone.
Explain the term Phosphorylation.
Complete the following sentence with appropriate word:
Xanthophyll is ______ coloured pigment.
Complete the following sentence with appropriate word:
A dark reaction is a __________ reaction.
Choose the Correct Answer:
Compensation point means the condition:
Fill in the blank by rearranging the letter in the bracket.
Pigment involved in the food synthesis is _________ (phllylochor).
State whether true or false. If false, correct the statement.
When the weather is hot, water evaporates lesser which is due to opening of stomata.
Mesophyll contains chlorophyll.
Why should the light-dependent reaction occur before the light-independent reaction?
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 | ? | + |
Give an example for micronutrients.
Mention four factors required for photosynthesis?
