237995
Which one of the following categories of organisms do not evolve oxygen during photosynthesis?
1 Red algae
2 Photosynthetic bacteria
3 $\mathrm{C}_{4}$ plants with Kranz anatomy
4 Blue green algae
Explanation:
B Van Neil proved that sulfur bacteria use $\mathrm{H}_{2} \mathrm{~S}$ in place of water and $\mathrm{CO}_{2}$ to synthesize carbohydrates, as follow. $6 \mathrm{CO}_{2}+12 \mathrm{H}_{2} \mathrm{~S} \longrightarrow \mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}+6 \mathrm{H}_{2} \mathrm{O}+12 \mathrm{~S}$ So, No oxygen is evolved as it does not involve splitting water.
Haryana PMT-2004
Photosynthesis in higher plants
237996
Maximum photosynthetic activity occur in
1 green and yellow region of light
2 blue and orange region of light
3 violet and orange region of light
4 blue and red region of light
Explanation:
D Blue and Red region of light. $x=400 \mathrm{~nm}$ Uliraviolet |Violet | Indigo /Blue Green/Yellow /Orange/ Red $/$ Infrared Electromagnetic spectrum of light
VMMC-2014
Photosynthesis in higher plants
237997
In the overall process of photosynthesis, the number of $\mathrm{CO}_{2}$, water, sugar and $\mathrm{O}_{2}$ molecules utilized and produced is
1 12
2 13
3 19
4 31
Explanation:
D $6 \mathrm{CO}_{2}+12 \mathrm{H}_{2} \mathrm{O} \longrightarrow \mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}+6 \mathrm{H}_{2} \mathrm{O}+$ $6 \mathrm{O}_{2}$ In photosynthesis reaction to produce one molecule of carbohydrates, totally 6 molecules of $\mathrm{CO}_{2}$ and 12 molecules of water are required- 1 glucose molecule $=6$ molecules of $\mathrm{CO}_{2}$ and 12 molecules of $\mathrm{H}_{2} \mathrm{O}$ required. $=6+12+1+6+6=31$
AMU-2012
Photosynthesis in higher plants
237998
Isotopes used in photosynthesis are
1 $\mathrm{C}^{11}$ and $\mathrm{P}^{32}$
2 $\mathrm{C}^{15}$ and $\mathrm{P}^{32}$
3 $\mathrm{C}^{16}$ and $\mathrm{N}^{15}$
4 $\mathrm{C}^{14}$ and $\mathrm{O}^{18}$
Explanation:
D The isotopes used in photosynthesis are $\mathrm{C}^{14}$ and $\mathrm{O}^{18}$. Carbon-14 is used by Melvin Calvin to track the $\mathrm{CO}_{2}$ uptake and incorporation into organic molecules during photosynthesis. Oxygen-18 is used by Ruben and Kamen to study the oxygen exchange and release during photosynthesis.
237995
Which one of the following categories of organisms do not evolve oxygen during photosynthesis?
1 Red algae
2 Photosynthetic bacteria
3 $\mathrm{C}_{4}$ plants with Kranz anatomy
4 Blue green algae
Explanation:
B Van Neil proved that sulfur bacteria use $\mathrm{H}_{2} \mathrm{~S}$ in place of water and $\mathrm{CO}_{2}$ to synthesize carbohydrates, as follow. $6 \mathrm{CO}_{2}+12 \mathrm{H}_{2} \mathrm{~S} \longrightarrow \mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}+6 \mathrm{H}_{2} \mathrm{O}+12 \mathrm{~S}$ So, No oxygen is evolved as it does not involve splitting water.
Haryana PMT-2004
Photosynthesis in higher plants
237996
Maximum photosynthetic activity occur in
1 green and yellow region of light
2 blue and orange region of light
3 violet and orange region of light
4 blue and red region of light
Explanation:
D Blue and Red region of light. $x=400 \mathrm{~nm}$ Uliraviolet |Violet | Indigo /Blue Green/Yellow /Orange/ Red $/$ Infrared Electromagnetic spectrum of light
VMMC-2014
Photosynthesis in higher plants
237997
In the overall process of photosynthesis, the number of $\mathrm{CO}_{2}$, water, sugar and $\mathrm{O}_{2}$ molecules utilized and produced is
1 12
2 13
3 19
4 31
Explanation:
D $6 \mathrm{CO}_{2}+12 \mathrm{H}_{2} \mathrm{O} \longrightarrow \mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}+6 \mathrm{H}_{2} \mathrm{O}+$ $6 \mathrm{O}_{2}$ In photosynthesis reaction to produce one molecule of carbohydrates, totally 6 molecules of $\mathrm{CO}_{2}$ and 12 molecules of water are required- 1 glucose molecule $=6$ molecules of $\mathrm{CO}_{2}$ and 12 molecules of $\mathrm{H}_{2} \mathrm{O}$ required. $=6+12+1+6+6=31$
AMU-2012
Photosynthesis in higher plants
237998
Isotopes used in photosynthesis are
1 $\mathrm{C}^{11}$ and $\mathrm{P}^{32}$
2 $\mathrm{C}^{15}$ and $\mathrm{P}^{32}$
3 $\mathrm{C}^{16}$ and $\mathrm{N}^{15}$
4 $\mathrm{C}^{14}$ and $\mathrm{O}^{18}$
Explanation:
D The isotopes used in photosynthesis are $\mathrm{C}^{14}$ and $\mathrm{O}^{18}$. Carbon-14 is used by Melvin Calvin to track the $\mathrm{CO}_{2}$ uptake and incorporation into organic molecules during photosynthesis. Oxygen-18 is used by Ruben and Kamen to study the oxygen exchange and release during photosynthesis.
237995
Which one of the following categories of organisms do not evolve oxygen during photosynthesis?
1 Red algae
2 Photosynthetic bacteria
3 $\mathrm{C}_{4}$ plants with Kranz anatomy
4 Blue green algae
Explanation:
B Van Neil proved that sulfur bacteria use $\mathrm{H}_{2} \mathrm{~S}$ in place of water and $\mathrm{CO}_{2}$ to synthesize carbohydrates, as follow. $6 \mathrm{CO}_{2}+12 \mathrm{H}_{2} \mathrm{~S} \longrightarrow \mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}+6 \mathrm{H}_{2} \mathrm{O}+12 \mathrm{~S}$ So, No oxygen is evolved as it does not involve splitting water.
Haryana PMT-2004
Photosynthesis in higher plants
237996
Maximum photosynthetic activity occur in
1 green and yellow region of light
2 blue and orange region of light
3 violet and orange region of light
4 blue and red region of light
Explanation:
D Blue and Red region of light. $x=400 \mathrm{~nm}$ Uliraviolet |Violet | Indigo /Blue Green/Yellow /Orange/ Red $/$ Infrared Electromagnetic spectrum of light
VMMC-2014
Photosynthesis in higher plants
237997
In the overall process of photosynthesis, the number of $\mathrm{CO}_{2}$, water, sugar and $\mathrm{O}_{2}$ molecules utilized and produced is
1 12
2 13
3 19
4 31
Explanation:
D $6 \mathrm{CO}_{2}+12 \mathrm{H}_{2} \mathrm{O} \longrightarrow \mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}+6 \mathrm{H}_{2} \mathrm{O}+$ $6 \mathrm{O}_{2}$ In photosynthesis reaction to produce one molecule of carbohydrates, totally 6 molecules of $\mathrm{CO}_{2}$ and 12 molecules of water are required- 1 glucose molecule $=6$ molecules of $\mathrm{CO}_{2}$ and 12 molecules of $\mathrm{H}_{2} \mathrm{O}$ required. $=6+12+1+6+6=31$
AMU-2012
Photosynthesis in higher plants
237998
Isotopes used in photosynthesis are
1 $\mathrm{C}^{11}$ and $\mathrm{P}^{32}$
2 $\mathrm{C}^{15}$ and $\mathrm{P}^{32}$
3 $\mathrm{C}^{16}$ and $\mathrm{N}^{15}$
4 $\mathrm{C}^{14}$ and $\mathrm{O}^{18}$
Explanation:
D The isotopes used in photosynthesis are $\mathrm{C}^{14}$ and $\mathrm{O}^{18}$. Carbon-14 is used by Melvin Calvin to track the $\mathrm{CO}_{2}$ uptake and incorporation into organic molecules during photosynthesis. Oxygen-18 is used by Ruben and Kamen to study the oxygen exchange and release during photosynthesis.
237995
Which one of the following categories of organisms do not evolve oxygen during photosynthesis?
1 Red algae
2 Photosynthetic bacteria
3 $\mathrm{C}_{4}$ plants with Kranz anatomy
4 Blue green algae
Explanation:
B Van Neil proved that sulfur bacteria use $\mathrm{H}_{2} \mathrm{~S}$ in place of water and $\mathrm{CO}_{2}$ to synthesize carbohydrates, as follow. $6 \mathrm{CO}_{2}+12 \mathrm{H}_{2} \mathrm{~S} \longrightarrow \mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}+6 \mathrm{H}_{2} \mathrm{O}+12 \mathrm{~S}$ So, No oxygen is evolved as it does not involve splitting water.
Haryana PMT-2004
Photosynthesis in higher plants
237996
Maximum photosynthetic activity occur in
1 green and yellow region of light
2 blue and orange region of light
3 violet and orange region of light
4 blue and red region of light
Explanation:
D Blue and Red region of light. $x=400 \mathrm{~nm}$ Uliraviolet |Violet | Indigo /Blue Green/Yellow /Orange/ Red $/$ Infrared Electromagnetic spectrum of light
VMMC-2014
Photosynthesis in higher plants
237997
In the overall process of photosynthesis, the number of $\mathrm{CO}_{2}$, water, sugar and $\mathrm{O}_{2}$ molecules utilized and produced is
1 12
2 13
3 19
4 31
Explanation:
D $6 \mathrm{CO}_{2}+12 \mathrm{H}_{2} \mathrm{O} \longrightarrow \mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}+6 \mathrm{H}_{2} \mathrm{O}+$ $6 \mathrm{O}_{2}$ In photosynthesis reaction to produce one molecule of carbohydrates, totally 6 molecules of $\mathrm{CO}_{2}$ and 12 molecules of water are required- 1 glucose molecule $=6$ molecules of $\mathrm{CO}_{2}$ and 12 molecules of $\mathrm{H}_{2} \mathrm{O}$ required. $=6+12+1+6+6=31$
AMU-2012
Photosynthesis in higher plants
237998
Isotopes used in photosynthesis are
1 $\mathrm{C}^{11}$ and $\mathrm{P}^{32}$
2 $\mathrm{C}^{15}$ and $\mathrm{P}^{32}$
3 $\mathrm{C}^{16}$ and $\mathrm{N}^{15}$
4 $\mathrm{C}^{14}$ and $\mathrm{O}^{18}$
Explanation:
D The isotopes used in photosynthesis are $\mathrm{C}^{14}$ and $\mathrm{O}^{18}$. Carbon-14 is used by Melvin Calvin to track the $\mathrm{CO}_{2}$ uptake and incorporation into organic molecules during photosynthesis. Oxygen-18 is used by Ruben and Kamen to study the oxygen exchange and release during photosynthesis.
