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प्रश्न
State how the constant internal environment is beneficial to organisms.
उत्तर
Homeostasis is the property of a system in which variables are regulated so that internal conditions remain stable and relatively constant. Example of homeostasis includes the regulation of temperature and the balance between acidity and alkalinity. It is the process which maintains the stability of the human body’s internal environment in response to changes in external conditions.
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संबंधित प्रश्न
During a school trip to 'Rohtang Pass', one of your classmate suddenly developed 'altitude sickness'. But, she recovered after sometime.
(a) Mention one symptom to diagnose the sickness.
(b) What caused the sickness?
(c) How could she recover by herself after sometime?
In certain seasons we sweat profusely while in some other season we shiver. Explain.
Explain any two alternatives by which organisms can overcome stressful external conditions.
Distinguish between Ectotherms and Endotherms
Answer the following question.
Why are there more conformers than regulators in the animal world?
What are the ways by which organisms respond to abiotic factors?
Homeostasis is ______.
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 ______.
Why do all the fresh water organisms have contractile vacuoles whereas majority of marine organisms lack them?
