337379
During photorespiration, there is a loss of __ of fixed carbon and no energy rich compound is produced.
1 \(10\% \)
2 \(33\% \)
3 \(25\% \)
4 \(75\% \)
Explanation:
During photorespiration, RuBisCO acts as oxygenase and binds to \({O_2}\) hence, \(C{O_2}\) fixation is decreased. RuBP forms one molecule of PGA and one molecule of phosphoglycolate. There is no synthesis of sugar, nor of ATP. Rather, 1 \(C{O_2}\) molecule is released. Hence, there is net loss of \(25\% \) of fixed oxygen.
BIOXI13: PHOTOSYNTHESIS IN HIGHER PLANTS
337380
Assertion : The process of photosynthesis is sensitive to higher temperatures. Reason : Affinity of the enzyme RuBisCO for \(C{O_2}\) is reduced at high temperature
1 Both Assertion and Reason are true and Reason is correct explanation of Assertion.
2 Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
3 Assertion is true but Reason is false.
4 Both Assertion and Reason are false.
Explanation:
Under favourable conditions of light and carbon dioxide concentration photosynthesis increases with increase in temperature till it reaches maximum.
BIOXI13: PHOTOSYNTHESIS IN HIGHER PLANTS
337381
In the photorespiratory pathway, ____.
1 There is synthesis of sugars but not ATP
2 There is neither synthesis of sugars, nor of ATP
3 There is synthesis of sugars as well as ATP
4 There is synthesis of ATP but not sugars
Explanation:
In the photorespiratory pathway, there is neither synthesis of sugars, nor of ATP.
BIOXI13: PHOTOSYNTHESIS IN HIGHER PLANTS
337382
Which of the following is considered as photorespiration?
1 \(C{O_2}\) fixation with the help of RuBisCO
2 \(C{O_2}\) fixation with the help of PEPcase enzyme
3 Binding of \({O_2}\) with RuBisCO and subsequent reactions
4 None of the above.
Explanation:
Photorespiration is that pathway where RuBisCO shows its oxygenase property and binds to \({O_2}\) leading to different results.
337379
During photorespiration, there is a loss of __ of fixed carbon and no energy rich compound is produced.
1 \(10\% \)
2 \(33\% \)
3 \(25\% \)
4 \(75\% \)
Explanation:
During photorespiration, RuBisCO acts as oxygenase and binds to \({O_2}\) hence, \(C{O_2}\) fixation is decreased. RuBP forms one molecule of PGA and one molecule of phosphoglycolate. There is no synthesis of sugar, nor of ATP. Rather, 1 \(C{O_2}\) molecule is released. Hence, there is net loss of \(25\% \) of fixed oxygen.
BIOXI13: PHOTOSYNTHESIS IN HIGHER PLANTS
337380
Assertion : The process of photosynthesis is sensitive to higher temperatures. Reason : Affinity of the enzyme RuBisCO for \(C{O_2}\) is reduced at high temperature
1 Both Assertion and Reason are true and Reason is correct explanation of Assertion.
2 Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
3 Assertion is true but Reason is false.
4 Both Assertion and Reason are false.
Explanation:
Under favourable conditions of light and carbon dioxide concentration photosynthesis increases with increase in temperature till it reaches maximum.
BIOXI13: PHOTOSYNTHESIS IN HIGHER PLANTS
337381
In the photorespiratory pathway, ____.
1 There is synthesis of sugars but not ATP
2 There is neither synthesis of sugars, nor of ATP
3 There is synthesis of sugars as well as ATP
4 There is synthesis of ATP but not sugars
Explanation:
In the photorespiratory pathway, there is neither synthesis of sugars, nor of ATP.
BIOXI13: PHOTOSYNTHESIS IN HIGHER PLANTS
337382
Which of the following is considered as photorespiration?
1 \(C{O_2}\) fixation with the help of RuBisCO
2 \(C{O_2}\) fixation with the help of PEPcase enzyme
3 Binding of \({O_2}\) with RuBisCO and subsequent reactions
4 None of the above.
Explanation:
Photorespiration is that pathway where RuBisCO shows its oxygenase property and binds to \({O_2}\) leading to different results.
337379
During photorespiration, there is a loss of __ of fixed carbon and no energy rich compound is produced.
1 \(10\% \)
2 \(33\% \)
3 \(25\% \)
4 \(75\% \)
Explanation:
During photorespiration, RuBisCO acts as oxygenase and binds to \({O_2}\) hence, \(C{O_2}\) fixation is decreased. RuBP forms one molecule of PGA and one molecule of phosphoglycolate. There is no synthesis of sugar, nor of ATP. Rather, 1 \(C{O_2}\) molecule is released. Hence, there is net loss of \(25\% \) of fixed oxygen.
BIOXI13: PHOTOSYNTHESIS IN HIGHER PLANTS
337380
Assertion : The process of photosynthesis is sensitive to higher temperatures. Reason : Affinity of the enzyme RuBisCO for \(C{O_2}\) is reduced at high temperature
1 Both Assertion and Reason are true and Reason is correct explanation of Assertion.
2 Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
3 Assertion is true but Reason is false.
4 Both Assertion and Reason are false.
Explanation:
Under favourable conditions of light and carbon dioxide concentration photosynthesis increases with increase in temperature till it reaches maximum.
BIOXI13: PHOTOSYNTHESIS IN HIGHER PLANTS
337381
In the photorespiratory pathway, ____.
1 There is synthesis of sugars but not ATP
2 There is neither synthesis of sugars, nor of ATP
3 There is synthesis of sugars as well as ATP
4 There is synthesis of ATP but not sugars
Explanation:
In the photorespiratory pathway, there is neither synthesis of sugars, nor of ATP.
BIOXI13: PHOTOSYNTHESIS IN HIGHER PLANTS
337382
Which of the following is considered as photorespiration?
1 \(C{O_2}\) fixation with the help of RuBisCO
2 \(C{O_2}\) fixation with the help of PEPcase enzyme
3 Binding of \({O_2}\) with RuBisCO and subsequent reactions
4 None of the above.
Explanation:
Photorespiration is that pathway where RuBisCO shows its oxygenase property and binds to \({O_2}\) leading to different results.
337379
During photorespiration, there is a loss of __ of fixed carbon and no energy rich compound is produced.
1 \(10\% \)
2 \(33\% \)
3 \(25\% \)
4 \(75\% \)
Explanation:
During photorespiration, RuBisCO acts as oxygenase and binds to \({O_2}\) hence, \(C{O_2}\) fixation is decreased. RuBP forms one molecule of PGA and one molecule of phosphoglycolate. There is no synthesis of sugar, nor of ATP. Rather, 1 \(C{O_2}\) molecule is released. Hence, there is net loss of \(25\% \) of fixed oxygen.
BIOXI13: PHOTOSYNTHESIS IN HIGHER PLANTS
337380
Assertion : The process of photosynthesis is sensitive to higher temperatures. Reason : Affinity of the enzyme RuBisCO for \(C{O_2}\) is reduced at high temperature
1 Both Assertion and Reason are true and Reason is correct explanation of Assertion.
2 Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
3 Assertion is true but Reason is false.
4 Both Assertion and Reason are false.
Explanation:
Under favourable conditions of light and carbon dioxide concentration photosynthesis increases with increase in temperature till it reaches maximum.
BIOXI13: PHOTOSYNTHESIS IN HIGHER PLANTS
337381
In the photorespiratory pathway, ____.
1 There is synthesis of sugars but not ATP
2 There is neither synthesis of sugars, nor of ATP
3 There is synthesis of sugars as well as ATP
4 There is synthesis of ATP but not sugars
Explanation:
In the photorespiratory pathway, there is neither synthesis of sugars, nor of ATP.
BIOXI13: PHOTOSYNTHESIS IN HIGHER PLANTS
337382
Which of the following is considered as photorespiration?
1 \(C{O_2}\) fixation with the help of RuBisCO
2 \(C{O_2}\) fixation with the help of PEPcase enzyme
3 Binding of \({O_2}\) with RuBisCO and subsequent reactions
4 None of the above.
Explanation:
Photorespiration is that pathway where RuBisCO shows its oxygenase property and binds to \({O_2}\) leading to different results.
