238092
Assertion (A) True xerophytes store water in the form of mucilage which helps to withstand prolonged period of drought. Reason (R) Vascular and mechanical tissues are well developed in true xerophytes. The correct answer is
1 Both (A) and (R) are true and (R) is the correct explanation of (A).
2 Both (A) and (R) are true, but (R) is not the correct explanation of $(A)$.
3 Only (A) is true, but (R) is not true
4 (A) is not true but (R) is true
Explanation:
D Plants that have evolved to exist in dry condition called xerophytes. They have well-developed vascular and mechanical tissues to take full advantage of conditions of water stress are common adaptation to minimize the rate of transpiration. They have a thick, waxy cuticle that prevents evaporation. Sunken stomata retain wet air to slow the rate of evaporation. Hairs on the inner surface of folded leaves with stomata help trap moist air and decrease transpiration.
AP EAMCET-2009
Photosynthesis in higher plants
238093
In CAM plants, $\mathrm{CO}_{2}$ acceptor is
1 RuBP
2 PEP
3 OAA
4 PGA
Explanation:
B In CAM plants, $\mathrm{CO}_{2}$ acceptor is PEP CAM plants are also known as Crassulacean Acid Metabolism. Phosphoenol pyruvic acid (PEP) is the $\mathrm{CO}_{2}$ acceptor in CAM plants at night, whereas ribulose bisphosphate is the acceptor during the day. Oxalo acetic acid (OAA) is the first stable product in the case of CAM plants.
BHU PMT (Screening)-2007
Photosynthesis in higher plants
238094
Chemiosmotic mechanism of ATP production in aerobic respiration was given by:
1 Krebs
2 Calvin
3 Hatch and Slack
4 Peter Mitchell
Explanation:
D According to Peter Mitchell's "chemiosmotic hypothesis," ATP can be produced by utilizing an electrochemical gradient of protons across a membrane.
AFMC-2004
Photosynthesis in higher plants
238091
The Chemiosmotic coupling Hypothesis of oxidative phosphorylation proposes that Adenosine Tri-Phosphate (ATP) is formed because
1 A proton gradient forms across the inner membrane
2 There is a change in the permeability of the inner mitochondrial membrane toward Adenosine Di-Phosphate (ADP)
3 High energy bonds are formed in mitochondrial proteins
4 ADP is pumped out of the matrix into the intermembrane space
Explanation:
A Electron transporters found in the inner mitochondrial membrane aid in the oxidative phosphorylation process inside mitochondria. In addition to creating a chemical gradient, the mitochondrial electron transport system also creates an electrochemical gradient when protons are released into the peri-mitochondrial region.
238092
Assertion (A) True xerophytes store water in the form of mucilage which helps to withstand prolonged period of drought. Reason (R) Vascular and mechanical tissues are well developed in true xerophytes. The correct answer is
1 Both (A) and (R) are true and (R) is the correct explanation of (A).
2 Both (A) and (R) are true, but (R) is not the correct explanation of $(A)$.
3 Only (A) is true, but (R) is not true
4 (A) is not true but (R) is true
Explanation:
D Plants that have evolved to exist in dry condition called xerophytes. They have well-developed vascular and mechanical tissues to take full advantage of conditions of water stress are common adaptation to minimize the rate of transpiration. They have a thick, waxy cuticle that prevents evaporation. Sunken stomata retain wet air to slow the rate of evaporation. Hairs on the inner surface of folded leaves with stomata help trap moist air and decrease transpiration.
AP EAMCET-2009
Photosynthesis in higher plants
238093
In CAM plants, $\mathrm{CO}_{2}$ acceptor is
1 RuBP
2 PEP
3 OAA
4 PGA
Explanation:
B In CAM plants, $\mathrm{CO}_{2}$ acceptor is PEP CAM plants are also known as Crassulacean Acid Metabolism. Phosphoenol pyruvic acid (PEP) is the $\mathrm{CO}_{2}$ acceptor in CAM plants at night, whereas ribulose bisphosphate is the acceptor during the day. Oxalo acetic acid (OAA) is the first stable product in the case of CAM plants.
BHU PMT (Screening)-2007
Photosynthesis in higher plants
238094
Chemiosmotic mechanism of ATP production in aerobic respiration was given by:
1 Krebs
2 Calvin
3 Hatch and Slack
4 Peter Mitchell
Explanation:
D According to Peter Mitchell's "chemiosmotic hypothesis," ATP can be produced by utilizing an electrochemical gradient of protons across a membrane.
AFMC-2004
Photosynthesis in higher plants
238091
The Chemiosmotic coupling Hypothesis of oxidative phosphorylation proposes that Adenosine Tri-Phosphate (ATP) is formed because
1 A proton gradient forms across the inner membrane
2 There is a change in the permeability of the inner mitochondrial membrane toward Adenosine Di-Phosphate (ADP)
3 High energy bonds are formed in mitochondrial proteins
4 ADP is pumped out of the matrix into the intermembrane space
Explanation:
A Electron transporters found in the inner mitochondrial membrane aid in the oxidative phosphorylation process inside mitochondria. In addition to creating a chemical gradient, the mitochondrial electron transport system also creates an electrochemical gradient when protons are released into the peri-mitochondrial region.
238092
Assertion (A) True xerophytes store water in the form of mucilage which helps to withstand prolonged period of drought. Reason (R) Vascular and mechanical tissues are well developed in true xerophytes. The correct answer is
1 Both (A) and (R) are true and (R) is the correct explanation of (A).
2 Both (A) and (R) are true, but (R) is not the correct explanation of $(A)$.
3 Only (A) is true, but (R) is not true
4 (A) is not true but (R) is true
Explanation:
D Plants that have evolved to exist in dry condition called xerophytes. They have well-developed vascular and mechanical tissues to take full advantage of conditions of water stress are common adaptation to minimize the rate of transpiration. They have a thick, waxy cuticle that prevents evaporation. Sunken stomata retain wet air to slow the rate of evaporation. Hairs on the inner surface of folded leaves with stomata help trap moist air and decrease transpiration.
AP EAMCET-2009
Photosynthesis in higher plants
238093
In CAM plants, $\mathrm{CO}_{2}$ acceptor is
1 RuBP
2 PEP
3 OAA
4 PGA
Explanation:
B In CAM plants, $\mathrm{CO}_{2}$ acceptor is PEP CAM plants are also known as Crassulacean Acid Metabolism. Phosphoenol pyruvic acid (PEP) is the $\mathrm{CO}_{2}$ acceptor in CAM plants at night, whereas ribulose bisphosphate is the acceptor during the day. Oxalo acetic acid (OAA) is the first stable product in the case of CAM plants.
BHU PMT (Screening)-2007
Photosynthesis in higher plants
238094
Chemiosmotic mechanism of ATP production in aerobic respiration was given by:
1 Krebs
2 Calvin
3 Hatch and Slack
4 Peter Mitchell
Explanation:
D According to Peter Mitchell's "chemiosmotic hypothesis," ATP can be produced by utilizing an electrochemical gradient of protons across a membrane.
AFMC-2004
Photosynthesis in higher plants
238091
The Chemiosmotic coupling Hypothesis of oxidative phosphorylation proposes that Adenosine Tri-Phosphate (ATP) is formed because
1 A proton gradient forms across the inner membrane
2 There is a change in the permeability of the inner mitochondrial membrane toward Adenosine Di-Phosphate (ADP)
3 High energy bonds are formed in mitochondrial proteins
4 ADP is pumped out of the matrix into the intermembrane space
Explanation:
A Electron transporters found in the inner mitochondrial membrane aid in the oxidative phosphorylation process inside mitochondria. In addition to creating a chemical gradient, the mitochondrial electron transport system also creates an electrochemical gradient when protons are released into the peri-mitochondrial region.
238092
Assertion (A) True xerophytes store water in the form of mucilage which helps to withstand prolonged period of drought. Reason (R) Vascular and mechanical tissues are well developed in true xerophytes. The correct answer is
1 Both (A) and (R) are true and (R) is the correct explanation of (A).
2 Both (A) and (R) are true, but (R) is not the correct explanation of $(A)$.
3 Only (A) is true, but (R) is not true
4 (A) is not true but (R) is true
Explanation:
D Plants that have evolved to exist in dry condition called xerophytes. They have well-developed vascular and mechanical tissues to take full advantage of conditions of water stress are common adaptation to minimize the rate of transpiration. They have a thick, waxy cuticle that prevents evaporation. Sunken stomata retain wet air to slow the rate of evaporation. Hairs on the inner surface of folded leaves with stomata help trap moist air and decrease transpiration.
AP EAMCET-2009
Photosynthesis in higher plants
238093
In CAM plants, $\mathrm{CO}_{2}$ acceptor is
1 RuBP
2 PEP
3 OAA
4 PGA
Explanation:
B In CAM plants, $\mathrm{CO}_{2}$ acceptor is PEP CAM plants are also known as Crassulacean Acid Metabolism. Phosphoenol pyruvic acid (PEP) is the $\mathrm{CO}_{2}$ acceptor in CAM plants at night, whereas ribulose bisphosphate is the acceptor during the day. Oxalo acetic acid (OAA) is the first stable product in the case of CAM plants.
BHU PMT (Screening)-2007
Photosynthesis in higher plants
238094
Chemiosmotic mechanism of ATP production in aerobic respiration was given by:
1 Krebs
2 Calvin
3 Hatch and Slack
4 Peter Mitchell
Explanation:
D According to Peter Mitchell's "chemiosmotic hypothesis," ATP can be produced by utilizing an electrochemical gradient of protons across a membrane.
AFMC-2004
Photosynthesis in higher plants
238091
The Chemiosmotic coupling Hypothesis of oxidative phosphorylation proposes that Adenosine Tri-Phosphate (ATP) is formed because
1 A proton gradient forms across the inner membrane
2 There is a change in the permeability of the inner mitochondrial membrane toward Adenosine Di-Phosphate (ADP)
3 High energy bonds are formed in mitochondrial proteins
4 ADP is pumped out of the matrix into the intermembrane space
Explanation:
A Electron transporters found in the inner mitochondrial membrane aid in the oxidative phosphorylation process inside mitochondria. In addition to creating a chemical gradient, the mitochondrial electron transport system also creates an electrochemical gradient when protons are released into the peri-mitochondrial region.
