343996
In polar seas, aquatic \(\underline{a}\) like \(\underline{b}\) have a thick layer of fat called \(\underline{\mathrm{c}}\) below their skin that acts as an \(\underline{\mathrm{d}}\) and reduces loss of body heat.
1 a-fishes, b-sharks, c - clasper, d - conductor
2 a-mammals, b-seals,c-blubber, d - insulator
3 a-fishes, b-seals, c - blubber, d - insulator
4 a - mammals, b-seals, c - blubber, d- conductor
Explanation:
a - mammals, b - seals, \(\mathrm{c}\) - blubber, d - insulator.
BIOXII13: ORGANISMS AND POPULATION
344002
Statement A : Zoo planktons diapause stage during unfavourable conditions. Statement B : Kangaroo rats have a long Henle's loop to minimise water loss and to concentrate urine
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:
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. So, both statements are correct
BIOXII13: ORGANISMS AND POPULATION
344003
Which of the following problems does the frequent deep sea diving organisms like whales may face?
1 Compression of tissues surrounding air- filled cavities
2 High blood nitrogen levels
3 Lack of oxygen
4 All of the above
Explanation:
Diving to depth can result in mechanical distortion and tissue compression, especially in gas-filled spaces of the body. Absorption of nitrogen into blood can cause high blood nitrogen levels which can exert amniotic effect. Lungs of the deep-diver cannot serve as a source of oxygen during the dive.
BIOXII13: ORGANISMS AND POPULATION
344004
Desert lizards lack the ____A_____ ability that mammals have to deal with the ____B____ temperatures of their habitat, but manage to keep their body temperature fairly constant by ____C____ means.
1 A - morphological, B - High, \(\mathrm{C}\) - behavioural
343996
In polar seas, aquatic \(\underline{a}\) like \(\underline{b}\) have a thick layer of fat called \(\underline{\mathrm{c}}\) below their skin that acts as an \(\underline{\mathrm{d}}\) and reduces loss of body heat.
1 a-fishes, b-sharks, c - clasper, d - conductor
2 a-mammals, b-seals,c-blubber, d - insulator
3 a-fishes, b-seals, c - blubber, d - insulator
4 a - mammals, b-seals, c - blubber, d- conductor
Explanation:
a - mammals, b - seals, \(\mathrm{c}\) - blubber, d - insulator.
BIOXII13: ORGANISMS AND POPULATION
344002
Statement A : Zoo planktons diapause stage during unfavourable conditions. Statement B : Kangaroo rats have a long Henle's loop to minimise water loss and to concentrate urine
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:
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. So, both statements are correct
BIOXII13: ORGANISMS AND POPULATION
344003
Which of the following problems does the frequent deep sea diving organisms like whales may face?
1 Compression of tissues surrounding air- filled cavities
2 High blood nitrogen levels
3 Lack of oxygen
4 All of the above
Explanation:
Diving to depth can result in mechanical distortion and tissue compression, especially in gas-filled spaces of the body. Absorption of nitrogen into blood can cause high blood nitrogen levels which can exert amniotic effect. Lungs of the deep-diver cannot serve as a source of oxygen during the dive.
BIOXII13: ORGANISMS AND POPULATION
344004
Desert lizards lack the ____A_____ ability that mammals have to deal with the ____B____ temperatures of their habitat, but manage to keep their body temperature fairly constant by ____C____ means.
1 A - morphological, B - High, \(\mathrm{C}\) - behavioural
343996
In polar seas, aquatic \(\underline{a}\) like \(\underline{b}\) have a thick layer of fat called \(\underline{\mathrm{c}}\) below their skin that acts as an \(\underline{\mathrm{d}}\) and reduces loss of body heat.
1 a-fishes, b-sharks, c - clasper, d - conductor
2 a-mammals, b-seals,c-blubber, d - insulator
3 a-fishes, b-seals, c - blubber, d - insulator
4 a - mammals, b-seals, c - blubber, d- conductor
Explanation:
a - mammals, b - seals, \(\mathrm{c}\) - blubber, d - insulator.
BIOXII13: ORGANISMS AND POPULATION
344002
Statement A : Zoo planktons diapause stage during unfavourable conditions. Statement B : Kangaroo rats have a long Henle's loop to minimise water loss and to concentrate urine
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:
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. So, both statements are correct
BIOXII13: ORGANISMS AND POPULATION
344003
Which of the following problems does the frequent deep sea diving organisms like whales may face?
1 Compression of tissues surrounding air- filled cavities
2 High blood nitrogen levels
3 Lack of oxygen
4 All of the above
Explanation:
Diving to depth can result in mechanical distortion and tissue compression, especially in gas-filled spaces of the body. Absorption of nitrogen into blood can cause high blood nitrogen levels which can exert amniotic effect. Lungs of the deep-diver cannot serve as a source of oxygen during the dive.
BIOXII13: ORGANISMS AND POPULATION
344004
Desert lizards lack the ____A_____ ability that mammals have to deal with the ____B____ temperatures of their habitat, but manage to keep their body temperature fairly constant by ____C____ means.
1 A - morphological, B - High, \(\mathrm{C}\) - behavioural
343996
In polar seas, aquatic \(\underline{a}\) like \(\underline{b}\) have a thick layer of fat called \(\underline{\mathrm{c}}\) below their skin that acts as an \(\underline{\mathrm{d}}\) and reduces loss of body heat.
1 a-fishes, b-sharks, c - clasper, d - conductor
2 a-mammals, b-seals,c-blubber, d - insulator
3 a-fishes, b-seals, c - blubber, d - insulator
4 a - mammals, b-seals, c - blubber, d- conductor
Explanation:
a - mammals, b - seals, \(\mathrm{c}\) - blubber, d - insulator.
BIOXII13: ORGANISMS AND POPULATION
344002
Statement A : Zoo planktons diapause stage during unfavourable conditions. Statement B : Kangaroo rats have a long Henle's loop to minimise water loss and to concentrate urine
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:
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. So, both statements are correct
BIOXII13: ORGANISMS AND POPULATION
344003
Which of the following problems does the frequent deep sea diving organisms like whales may face?
1 Compression of tissues surrounding air- filled cavities
2 High blood nitrogen levels
3 Lack of oxygen
4 All of the above
Explanation:
Diving to depth can result in mechanical distortion and tissue compression, especially in gas-filled spaces of the body. Absorption of nitrogen into blood can cause high blood nitrogen levels which can exert amniotic effect. Lungs of the deep-diver cannot serve as a source of oxygen during the dive.
BIOXII13: ORGANISMS AND POPULATION
344004
Desert lizards lack the ____A_____ ability that mammals have to deal with the ____B____ temperatures of their habitat, but manage to keep their body temperature fairly constant by ____C____ means.
1 A - morphological, B - High, \(\mathrm{C}\) - behavioural
