237952
The source of oxygen evolved during photosynthesis is
1 light
2 chlorophyll
3 $\mathrm{CO}_{2}$
4 water
Explanation:
D Oxygen is evolved during photosynthesis as a result of the light-dependent reactions. Light energy is used to split water molecules through a process called photolysis, releasing oxygen as a byproduct.
MHT CET 5.10.2020 Shift-I/ JIPMER-2000 J and K CET-2000 / Rajasthan PMT-1999
Photosynthesis in higher plants
237959
Out of the $56 \%$ of sunlight reaching the earth's atmosphere is used for photosynthesis.
1 $0.05 \%$
2 $0.02 \%$
3 $10 \%$
4 $0.2 \%$
Explanation:
D $0.2 \%$ is used for photosynthesis because plants do not absorb all incoming sunlight and do not convert all harvested energy into biomass.
MHT CET 5.10.2020 Shift-I
Photosynthesis in higher plants
237960
On land, plants get carbon from
1 carbonate rocks in the surroundings
2 supplements added to the soil
3 the $\mathrm{CO}_{2}$ dissolved in soil water
4 fixation of atmospheric $\mathrm{CO}_{2}$ during photosynthesis
Explanation:
D Plants on land obtain carbon from atmospheric $\mathrm{CO}_{2}$ fixation through photosynthesis, which is subsequently transmitted on to all living things. Soil holds a large amount of active carbon on earth. Plants take carbon from the air and convert it to plant tissue, some of which returns to the soil as plant residue.
MHT CET-06.10.2020 Shift-I
Photosynthesis in higher plants
237963
'In the presence of bright sunlight small bubbles are formed around green parts of the plant'. Who showed this?
1 Joseph Priestley
2 Robert Hill
3 Jan Ingenhousz
4 Julius Von Sachs
Explanation:
C Jan Ingenhousz, a Dutch - British scientist, conducted experiments in the late $18^{\text {th }}$ century that led to the discovery of photosynthesis. In 1779 he observed that when green aquatic plants were exposed to sunlight, they released tiny bubbles of oxygen gas. He found that these bubbles were produced in the presence of sunlight and that they originated from the green parts of the plant.
GUJCET-2018
Photosynthesis in higher plants
237966
Which statement about photosynthesis is false?
1 Photosynthesis is a redox process in which water is oxidized and carbon dioxide is reduced.
2 The enzymes required for carbon fixation are located only in the grana of chloroplasts.
3 In green plants both PS I and PS II are required for the formation of $\mathrm{NADPH}+\mathrm{H}^{+}$.
4 The electron carriers involved in photophosphorylation are located on the thylakoid membranes.
Explanation:
B The the statement that the enzymes required for carbon fixation are located only in the grana of chloroplasts is not true. The light independent reactions, which included the calvin cycle and carbon fixation, occur in the stroma.
237952
The source of oxygen evolved during photosynthesis is
1 light
2 chlorophyll
3 $\mathrm{CO}_{2}$
4 water
Explanation:
D Oxygen is evolved during photosynthesis as a result of the light-dependent reactions. Light energy is used to split water molecules through a process called photolysis, releasing oxygen as a byproduct.
MHT CET 5.10.2020 Shift-I/ JIPMER-2000 J and K CET-2000 / Rajasthan PMT-1999
Photosynthesis in higher plants
237959
Out of the $56 \%$ of sunlight reaching the earth's atmosphere is used for photosynthesis.
1 $0.05 \%$
2 $0.02 \%$
3 $10 \%$
4 $0.2 \%$
Explanation:
D $0.2 \%$ is used for photosynthesis because plants do not absorb all incoming sunlight and do not convert all harvested energy into biomass.
MHT CET 5.10.2020 Shift-I
Photosynthesis in higher plants
237960
On land, plants get carbon from
1 carbonate rocks in the surroundings
2 supplements added to the soil
3 the $\mathrm{CO}_{2}$ dissolved in soil water
4 fixation of atmospheric $\mathrm{CO}_{2}$ during photosynthesis
Explanation:
D Plants on land obtain carbon from atmospheric $\mathrm{CO}_{2}$ fixation through photosynthesis, which is subsequently transmitted on to all living things. Soil holds a large amount of active carbon on earth. Plants take carbon from the air and convert it to plant tissue, some of which returns to the soil as plant residue.
MHT CET-06.10.2020 Shift-I
Photosynthesis in higher plants
237963
'In the presence of bright sunlight small bubbles are formed around green parts of the plant'. Who showed this?
1 Joseph Priestley
2 Robert Hill
3 Jan Ingenhousz
4 Julius Von Sachs
Explanation:
C Jan Ingenhousz, a Dutch - British scientist, conducted experiments in the late $18^{\text {th }}$ century that led to the discovery of photosynthesis. In 1779 he observed that when green aquatic plants were exposed to sunlight, they released tiny bubbles of oxygen gas. He found that these bubbles were produced in the presence of sunlight and that they originated from the green parts of the plant.
GUJCET-2018
Photosynthesis in higher plants
237966
Which statement about photosynthesis is false?
1 Photosynthesis is a redox process in which water is oxidized and carbon dioxide is reduced.
2 The enzymes required for carbon fixation are located only in the grana of chloroplasts.
3 In green plants both PS I and PS II are required for the formation of $\mathrm{NADPH}+\mathrm{H}^{+}$.
4 The electron carriers involved in photophosphorylation are located on the thylakoid membranes.
Explanation:
B The the statement that the enzymes required for carbon fixation are located only in the grana of chloroplasts is not true. The light independent reactions, which included the calvin cycle and carbon fixation, occur in the stroma.
237952
The source of oxygen evolved during photosynthesis is
1 light
2 chlorophyll
3 $\mathrm{CO}_{2}$
4 water
Explanation:
D Oxygen is evolved during photosynthesis as a result of the light-dependent reactions. Light energy is used to split water molecules through a process called photolysis, releasing oxygen as a byproduct.
MHT CET 5.10.2020 Shift-I/ JIPMER-2000 J and K CET-2000 / Rajasthan PMT-1999
Photosynthesis in higher plants
237959
Out of the $56 \%$ of sunlight reaching the earth's atmosphere is used for photosynthesis.
1 $0.05 \%$
2 $0.02 \%$
3 $10 \%$
4 $0.2 \%$
Explanation:
D $0.2 \%$ is used for photosynthesis because plants do not absorb all incoming sunlight and do not convert all harvested energy into biomass.
MHT CET 5.10.2020 Shift-I
Photosynthesis in higher plants
237960
On land, plants get carbon from
1 carbonate rocks in the surroundings
2 supplements added to the soil
3 the $\mathrm{CO}_{2}$ dissolved in soil water
4 fixation of atmospheric $\mathrm{CO}_{2}$ during photosynthesis
Explanation:
D Plants on land obtain carbon from atmospheric $\mathrm{CO}_{2}$ fixation through photosynthesis, which is subsequently transmitted on to all living things. Soil holds a large amount of active carbon on earth. Plants take carbon from the air and convert it to plant tissue, some of which returns to the soil as plant residue.
MHT CET-06.10.2020 Shift-I
Photosynthesis in higher plants
237963
'In the presence of bright sunlight small bubbles are formed around green parts of the plant'. Who showed this?
1 Joseph Priestley
2 Robert Hill
3 Jan Ingenhousz
4 Julius Von Sachs
Explanation:
C Jan Ingenhousz, a Dutch - British scientist, conducted experiments in the late $18^{\text {th }}$ century that led to the discovery of photosynthesis. In 1779 he observed that when green aquatic plants were exposed to sunlight, they released tiny bubbles of oxygen gas. He found that these bubbles were produced in the presence of sunlight and that they originated from the green parts of the plant.
GUJCET-2018
Photosynthesis in higher plants
237966
Which statement about photosynthesis is false?
1 Photosynthesis is a redox process in which water is oxidized and carbon dioxide is reduced.
2 The enzymes required for carbon fixation are located only in the grana of chloroplasts.
3 In green plants both PS I and PS II are required for the formation of $\mathrm{NADPH}+\mathrm{H}^{+}$.
4 The electron carriers involved in photophosphorylation are located on the thylakoid membranes.
Explanation:
B The the statement that the enzymes required for carbon fixation are located only in the grana of chloroplasts is not true. The light independent reactions, which included the calvin cycle and carbon fixation, occur in the stroma.
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Photosynthesis in higher plants
237952
The source of oxygen evolved during photosynthesis is
1 light
2 chlorophyll
3 $\mathrm{CO}_{2}$
4 water
Explanation:
D Oxygen is evolved during photosynthesis as a result of the light-dependent reactions. Light energy is used to split water molecules through a process called photolysis, releasing oxygen as a byproduct.
MHT CET 5.10.2020 Shift-I/ JIPMER-2000 J and K CET-2000 / Rajasthan PMT-1999
Photosynthesis in higher plants
237959
Out of the $56 \%$ of sunlight reaching the earth's atmosphere is used for photosynthesis.
1 $0.05 \%$
2 $0.02 \%$
3 $10 \%$
4 $0.2 \%$
Explanation:
D $0.2 \%$ is used for photosynthesis because plants do not absorb all incoming sunlight and do not convert all harvested energy into biomass.
MHT CET 5.10.2020 Shift-I
Photosynthesis in higher plants
237960
On land, plants get carbon from
1 carbonate rocks in the surroundings
2 supplements added to the soil
3 the $\mathrm{CO}_{2}$ dissolved in soil water
4 fixation of atmospheric $\mathrm{CO}_{2}$ during photosynthesis
Explanation:
D Plants on land obtain carbon from atmospheric $\mathrm{CO}_{2}$ fixation through photosynthesis, which is subsequently transmitted on to all living things. Soil holds a large amount of active carbon on earth. Plants take carbon from the air and convert it to plant tissue, some of which returns to the soil as plant residue.
MHT CET-06.10.2020 Shift-I
Photosynthesis in higher plants
237963
'In the presence of bright sunlight small bubbles are formed around green parts of the plant'. Who showed this?
1 Joseph Priestley
2 Robert Hill
3 Jan Ingenhousz
4 Julius Von Sachs
Explanation:
C Jan Ingenhousz, a Dutch - British scientist, conducted experiments in the late $18^{\text {th }}$ century that led to the discovery of photosynthesis. In 1779 he observed that when green aquatic plants were exposed to sunlight, they released tiny bubbles of oxygen gas. He found that these bubbles were produced in the presence of sunlight and that they originated from the green parts of the plant.
GUJCET-2018
Photosynthesis in higher plants
237966
Which statement about photosynthesis is false?
1 Photosynthesis is a redox process in which water is oxidized and carbon dioxide is reduced.
2 The enzymes required for carbon fixation are located only in the grana of chloroplasts.
3 In green plants both PS I and PS II are required for the formation of $\mathrm{NADPH}+\mathrm{H}^{+}$.
4 The electron carriers involved in photophosphorylation are located on the thylakoid membranes.
Explanation:
B The the statement that the enzymes required for carbon fixation are located only in the grana of chloroplasts is not true. The light independent reactions, which included the calvin cycle and carbon fixation, occur in the stroma.
237952
The source of oxygen evolved during photosynthesis is
1 light
2 chlorophyll
3 $\mathrm{CO}_{2}$
4 water
Explanation:
D Oxygen is evolved during photosynthesis as a result of the light-dependent reactions. Light energy is used to split water molecules through a process called photolysis, releasing oxygen as a byproduct.
MHT CET 5.10.2020 Shift-I/ JIPMER-2000 J and K CET-2000 / Rajasthan PMT-1999
Photosynthesis in higher plants
237959
Out of the $56 \%$ of sunlight reaching the earth's atmosphere is used for photosynthesis.
1 $0.05 \%$
2 $0.02 \%$
3 $10 \%$
4 $0.2 \%$
Explanation:
D $0.2 \%$ is used for photosynthesis because plants do not absorb all incoming sunlight and do not convert all harvested energy into biomass.
MHT CET 5.10.2020 Shift-I
Photosynthesis in higher plants
237960
On land, plants get carbon from
1 carbonate rocks in the surroundings
2 supplements added to the soil
3 the $\mathrm{CO}_{2}$ dissolved in soil water
4 fixation of atmospheric $\mathrm{CO}_{2}$ during photosynthesis
Explanation:
D Plants on land obtain carbon from atmospheric $\mathrm{CO}_{2}$ fixation through photosynthesis, which is subsequently transmitted on to all living things. Soil holds a large amount of active carbon on earth. Plants take carbon from the air and convert it to plant tissue, some of which returns to the soil as plant residue.
MHT CET-06.10.2020 Shift-I
Photosynthesis in higher plants
237963
'In the presence of bright sunlight small bubbles are formed around green parts of the plant'. Who showed this?
1 Joseph Priestley
2 Robert Hill
3 Jan Ingenhousz
4 Julius Von Sachs
Explanation:
C Jan Ingenhousz, a Dutch - British scientist, conducted experiments in the late $18^{\text {th }}$ century that led to the discovery of photosynthesis. In 1779 he observed that when green aquatic plants were exposed to sunlight, they released tiny bubbles of oxygen gas. He found that these bubbles were produced in the presence of sunlight and that they originated from the green parts of the plant.
GUJCET-2018
Photosynthesis in higher plants
237966
Which statement about photosynthesis is false?
1 Photosynthesis is a redox process in which water is oxidized and carbon dioxide is reduced.
2 The enzymes required for carbon fixation are located only in the grana of chloroplasts.
3 In green plants both PS I and PS II are required for the formation of $\mathrm{NADPH}+\mathrm{H}^{+}$.
4 The electron carriers involved in photophosphorylation are located on the thylakoid membranes.
Explanation:
B The the statement that the enzymes required for carbon fixation are located only in the grana of chloroplasts is not true. The light independent reactions, which included the calvin cycle and carbon fixation, occur in the stroma.