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प्रश्न
In certain seasons we sweat profusely while in some other season we shiver. Explain.
उत्तर
Our body is very adaptable. It tries to maintain a constant internal environment while the external environmental condition is changing. This adaptability (homeothermy) is very important for our survival. In summers, when the external conditions are too hot, our body sweats in order to cool itself, while in winters, when the external environment is cold, our body shivers to keep us warm.
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संबंधित प्रश्न
Explain why very small animals are rarely found in polar region.
State how the constant internal environment is beneficial to organisms.
List the various abiotic environmental factors.
Answer the following question.
‘‘Organisms may be conformers or regulators.’’ Explain this statement and give one example of each.
Which of the following is correct for r-selected species
What are the ways by which organisms respond to abiotic factors?
Match List - I with List - II.
| List I | List II | ||
| (a) | Allen's Rule | (i) | Kangaroo rat |
| (b) | Physiological adaptation |
(ii) | Desert lizard |
| (c) | Behavioural adaptation |
(iii) | Marine fish at depth |
| (d) | Biochemical adaptation |
(iv) | Polar seal |
Choose the correct answer from the options given below.
Salt concentration (Salinity) of the sea measured in parts per thousand is ______.
What will happen to a well-growing herbaceous plant in the forest if it is transplanted outside the forest in a park?
Name the association in which one species produces poisonous substance or a change in environmental conditions that is harmful to another species.
