1
Question
Every ______(i)_____the Keoladeo National Park in Rajasthan hosts thousands of migratory birds coming from Siberia.
Desert lizards lack the____(ii)_____ability that mammals have to deal with the high temperatures, but manage to keep their body temperature fairly constant by____(iii)_____means.
In the polar seas aquatic mammals like seals have a thick layer of____(iv)______ below their skin that acts as an insulator and reduces loss of body heat.
Every ______(i)_____the Keoladeo National Park in Rajasthan hosts thousands of migratory birds coming from Siberia.
Desert lizards lack the____(ii)_____ability that mammals have to deal with the high temperatures, but manage to keep their body temperature fairly constant by____(iii)_____means.
In the polar seas aquatic mammals like seals have a thick layer of____(iv)______ below their skin that acts as an insulator and reduces loss of body heat.
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Solution
The correct option is C i - winter, ii - physiological, iii - behavioural, iv - fat (blubber)
Migration is the temporary movement of an organism from a stressful habitat to a more hospitable area.
For example, the Siberian Crane migrates to the Keoladeo National Park in Rajasthan during the harsh and cold winter season in Siberia.
Hence, (i) is winter.
The desert lizards lack the physiological ability to maintain a constant body temperature. They try to maintain a fairly constant temperature by behavioral means. When the desert becomes too hot during the day, it hides in shady places to keep itself cool. Whereas when the temperatures fall below its comfort zone, especially during the winter, it basks in the sun to keep itself warm.
Hence, (ii) is physiological and (iii) is behavioral.
The polar regions of the earth are characterised by extremely cold temperatures and remain covered in ice all year round. Thus, animals surviving in these regions require special adaptations to help them survive in the extreme cold.
Seals in the polar regions are characterised by the presence of a thick layer of fat called blubber that acts as an insulator and prevents the loss of body heat.
Hence, (iv) is fat (blubber).
Migration is the temporary movement of an organism from a stressful habitat to a more hospitable area.
For example, the Siberian Crane migrates to the Keoladeo National Park in Rajasthan during the harsh and cold winter season in Siberia.
Hence, (i) is winter.
The desert lizards lack the physiological ability to maintain a constant body temperature. They try to maintain a fairly constant temperature by behavioral means. When the desert becomes too hot during the day, it hides in shady places to keep itself cool. Whereas when the temperatures fall below its comfort zone, especially during the winter, it basks in the sun to keep itself warm.
Hence, (ii) is physiological and (iii) is behavioral.
The polar regions of the earth are characterised by extremely cold temperatures and remain covered in ice all year round. Thus, animals surviving in these regions require special adaptations to help them survive in the extreme cold.
Seals in the polar regions are characterised by the presence of a thick layer of fat called blubber that acts as an insulator and prevents the loss of body heat.
Hence, (iv) is fat (blubber).
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