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Which of the following is correct for r-selected species - Zoology

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प्रश्न

Which of the following is correct for r-selected species

पर्याय

  • Large number of progeny with small size

  • Large number of progeny with large size

  • Small number of progeny with small size

  • Small number of progeny with large size

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उत्तर

Large number of progeny with small size

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 10: Organisms and Populations - Evaluation [पृष्ठ १७८]

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सामाचीर कलवी Biology (Zoology) [English] Class 12 TN Board
पाठ 10 Organisms and Populations
Evaluation | Q 10. | पृष्ठ १७८
सामाचीर कलवी Biology (Zoology) [English] Class 12 TN Board
पाठ 11 Organisms and Populations
Evaluation | Q 10. | पृष्ठ १९४

संबंधित प्रश्‍न

Give an example of an organism that enters 'diapause' and why.


During a school trip to ‘Rohtang Pass’, one of your classmate suddenly developed ‘altitude sickness’. But, she recovered after sometime.

  1. Mention one symptom to diagnose the sickness.
  2. What caused the sickness?
  3. How could she recover by herself after sometime?

In certain seasons we sweat profusely while in some other season we shiver. Explain.


Explain with the help of suitable examples the three different ways by which organisms overcome their stressful conditions lasting for short duration.


Explain any two alternatives by which organisms can overcome stressful external conditions.


Distinguish between Hibernation and Aestivation


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.


Some organisms are able to maintain homeostasis by physical means ______.


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 ______.


What will happen to a well-growing herbaceous plant in the forest if it is transplanted outside the forest in a park?


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


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