Advertisements
Advertisements
Question
Distinguish between Ectotherms and Endotherms
Solution
| Ectotherms | Endotherms |
| Ectotherms are cold blooded animals. Their temperature varies with their surroundings | Endotherms are warm blooded animals. They maintain a constant body temperature. |
| Fishes, amphibians, and reptiles are ectothermal animals | Birds and mammals are endothermal animals. |
APPEARS IN
RELATED QUESTIONS
Give an example of an organism that enters 'diapause' and why.
State how the constant internal environment is beneficial to organisms.
Explain any two alternatives by which organisms can overcome stressful external conditions.
Distinguish between Hibernation and Aestivation
The following question(s)/statement(s) has four suggested answers. Choose the correct option in the following case.
The curve showing the amount of light absorbed at each wavelength is : ____________.
Answer the following question.
‘‘Organisms may be conformers or regulators.’’ Explain this statement and give one example of each.
Answer the following question.
Why are there more conformers than regulators in the animal world?
The figure given below is a diagrammatic representation of response of organisms to abiotic factors. What do A, B and C represent respectively.
| S. No. | A | B | C |
| a. | Conformer | Regulator | Partial Regulator |
| b. | Regulator | Partial Regulator | Conformer |
| c. | Partial Regulator | Regulator | Conformer |
| d. | Regulator | Conformer | Partial Regulator |
Some organisms are able to maintain homeostasis by physical means ________.
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.
Assertion(A): A person goes to high altitude and experiences ‘altitude sickness’ with symptoms like breathing difficulty and heart palpitations.
Reason(R): Due to low atmospheric pressure at high altitudes, the body does not get sufficient oxygen. In light of the above statements, choose the correct answer from the options given below.
Salt concentration (Salinity) of the sea measured in parts per thousand is ______.
Define aestivation.
What is diapause and its significance?
Why do all the fresh water organisms have contractile vacuoles whereas majority of marine organisms lack them?
Give one example for the following type.
Migratory animal
Give one example for the following:
Antifreeze compound seen in antarctic fish
