343964
Altitude sickness occurs at high mountains. This sicknes have symptoms like
1 Nausea
2 Fatigue
3 Heart palpitations
4 All of these
Explanation:
Altitude sickness occurs at high mountains. This sickness have symptoms like (1) Nausea (2) Fatigue (3) Heart palpitations
BIOXII13: ORGANISMS AND POPULATION
343965
Body compensates for low oxygen availability at high altitudes due to the altitude sickness by
1 Increasing RBC
2 Decreasing binding affinity of haemoglobin
3 Increasing breathing rate
4 All of the above
Explanation:
Body compensates for low oxygen availibility at high altitudes due to the altitude sickness by (1) Increasing RBC (2) Decreasing binding affinity of haemoglobin (3) Increasing breathing rate
BIOXII13: ORGANISMS AND POPULATION
343967
Statement A : Many desert plants have Sunken stoma to minimise water loss. Statement B : In Opuntia stem is modified (or) reduced to spines
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
Xerophytes are plants which can survive in dry or desert regions, i.e. with little water. Sunken stomata ensure less water loss, thus reduces the rate of transpiration. Hence, these are characteristically found in xerophytes. Opuntia is a xerophytic plant, in which leaves are modified into spines and reduce the rate of transpiration and they cannot perform photosynthesis. So the photosynthesis is done by stem in opuntia. Only statement A is correct
BIOXII13: ORGANISMS AND POPULATION
343968
Assertion : Zoo planktons diapause stage during unfavourable conditions. Reason : Kangaroo rats have a long Henle's loop to minimise water loss and to concentrate urine
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
Under unfavourable conditions many zooplankton species in lakes and ponds enter a stage of suspended development Diapause is a period during which growth or development is suspended and physiological activity is diminished, as in certain insects in response to adverse environmental conditions. They mostly eat dry food and do not take in liquid water by drinking. The kangaroo rat's kidneys are well-organized and produce only small quantities of urine, which is highly concentrated. They are said to have very long loops of Henle. These long loops of Henle allows the water to be reabsorbed efficiently. Both Assertion and Reason are true
343964
Altitude sickness occurs at high mountains. This sicknes have symptoms like
1 Nausea
2 Fatigue
3 Heart palpitations
4 All of these
Explanation:
Altitude sickness occurs at high mountains. This sickness have symptoms like (1) Nausea (2) Fatigue (3) Heart palpitations
BIOXII13: ORGANISMS AND POPULATION
343965
Body compensates for low oxygen availability at high altitudes due to the altitude sickness by
1 Increasing RBC
2 Decreasing binding affinity of haemoglobin
3 Increasing breathing rate
4 All of the above
Explanation:
Body compensates for low oxygen availibility at high altitudes due to the altitude sickness by (1) Increasing RBC (2) Decreasing binding affinity of haemoglobin (3) Increasing breathing rate
BIOXII13: ORGANISMS AND POPULATION
343967
Statement A : Many desert plants have Sunken stoma to minimise water loss. Statement B : In Opuntia stem is modified (or) reduced to spines
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
Xerophytes are plants which can survive in dry or desert regions, i.e. with little water. Sunken stomata ensure less water loss, thus reduces the rate of transpiration. Hence, these are characteristically found in xerophytes. Opuntia is a xerophytic plant, in which leaves are modified into spines and reduce the rate of transpiration and they cannot perform photosynthesis. So the photosynthesis is done by stem in opuntia. Only statement A is correct
BIOXII13: ORGANISMS AND POPULATION
343968
Assertion : Zoo planktons diapause stage during unfavourable conditions. Reason : Kangaroo rats have a long Henle's loop to minimise water loss and to concentrate urine
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
Under unfavourable conditions many zooplankton species in lakes and ponds enter a stage of suspended development Diapause is a period during which growth or development is suspended and physiological activity is diminished, as in certain insects in response to adverse environmental conditions. They mostly eat dry food and do not take in liquid water by drinking. The kangaroo rat's kidneys are well-organized and produce only small quantities of urine, which is highly concentrated. They are said to have very long loops of Henle. These long loops of Henle allows the water to be reabsorbed efficiently. Both Assertion and Reason are true
343964
Altitude sickness occurs at high mountains. This sicknes have symptoms like
1 Nausea
2 Fatigue
3 Heart palpitations
4 All of these
Explanation:
Altitude sickness occurs at high mountains. This sickness have symptoms like (1) Nausea (2) Fatigue (3) Heart palpitations
BIOXII13: ORGANISMS AND POPULATION
343965
Body compensates for low oxygen availability at high altitudes due to the altitude sickness by
1 Increasing RBC
2 Decreasing binding affinity of haemoglobin
3 Increasing breathing rate
4 All of the above
Explanation:
Body compensates for low oxygen availibility at high altitudes due to the altitude sickness by (1) Increasing RBC (2) Decreasing binding affinity of haemoglobin (3) Increasing breathing rate
BIOXII13: ORGANISMS AND POPULATION
343967
Statement A : Many desert plants have Sunken stoma to minimise water loss. Statement B : In Opuntia stem is modified (or) reduced to spines
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
Xerophytes are plants which can survive in dry or desert regions, i.e. with little water. Sunken stomata ensure less water loss, thus reduces the rate of transpiration. Hence, these are characteristically found in xerophytes. Opuntia is a xerophytic plant, in which leaves are modified into spines and reduce the rate of transpiration and they cannot perform photosynthesis. So the photosynthesis is done by stem in opuntia. Only statement A is correct
BIOXII13: ORGANISMS AND POPULATION
343968
Assertion : Zoo planktons diapause stage during unfavourable conditions. Reason : Kangaroo rats have a long Henle's loop to minimise water loss and to concentrate urine
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
Under unfavourable conditions many zooplankton species in lakes and ponds enter a stage of suspended development Diapause is a period during which growth or development is suspended and physiological activity is diminished, as in certain insects in response to adverse environmental conditions. They mostly eat dry food and do not take in liquid water by drinking. The kangaroo rat's kidneys are well-organized and produce only small quantities of urine, which is highly concentrated. They are said to have very long loops of Henle. These long loops of Henle allows the water to be reabsorbed efficiently. Both Assertion and Reason are true
343964
Altitude sickness occurs at high mountains. This sicknes have symptoms like
1 Nausea
2 Fatigue
3 Heart palpitations
4 All of these
Explanation:
Altitude sickness occurs at high mountains. This sickness have symptoms like (1) Nausea (2) Fatigue (3) Heart palpitations
BIOXII13: ORGANISMS AND POPULATION
343965
Body compensates for low oxygen availability at high altitudes due to the altitude sickness by
1 Increasing RBC
2 Decreasing binding affinity of haemoglobin
3 Increasing breathing rate
4 All of the above
Explanation:
Body compensates for low oxygen availibility at high altitudes due to the altitude sickness by (1) Increasing RBC (2) Decreasing binding affinity of haemoglobin (3) Increasing breathing rate
BIOXII13: ORGANISMS AND POPULATION
343967
Statement A : Many desert plants have Sunken stoma to minimise water loss. Statement B : In Opuntia stem is modified (or) reduced to spines
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
Xerophytes are plants which can survive in dry or desert regions, i.e. with little water. Sunken stomata ensure less water loss, thus reduces the rate of transpiration. Hence, these are characteristically found in xerophytes. Opuntia is a xerophytic plant, in which leaves are modified into spines and reduce the rate of transpiration and they cannot perform photosynthesis. So the photosynthesis is done by stem in opuntia. Only statement A is correct
BIOXII13: ORGANISMS AND POPULATION
343968
Assertion : Zoo planktons diapause stage during unfavourable conditions. Reason : Kangaroo rats have a long Henle's loop to minimise water loss and to concentrate urine
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
Under unfavourable conditions many zooplankton species in lakes and ponds enter a stage of suspended development Diapause is a period during which growth or development is suspended and physiological activity is diminished, as in certain insects in response to adverse environmental conditions. They mostly eat dry food and do not take in liquid water by drinking. The kangaroo rat's kidneys are well-organized and produce only small quantities of urine, which is highly concentrated. They are said to have very long loops of Henle. These long loops of Henle allows the water to be reabsorbed efficiently. Both Assertion and Reason are true
