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प्रश्न
Define population.
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उत्तर १
A population is a group of individuals of the same species that are capable of interbreeding and are found in a geographical area. E.g., all the frogs identified as Rana tigrina living in a given pond constitute a population. Similarly, all water hyacinth plants (Eichhornia) growing in that pond form another population. Organisms of the same kind may form several populations inhabiting different geographical areas.
उत्तर २
The population is defined as a group of individuals of a species occupying a definite geographic area at a given time.
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संबंधित प्रश्न
Apart from being a part of the food chain, predators play other important roles. Mention any two such roles supported by examples.
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Match the following and choose the correct combination from the options given below.
| Column I | Column II |
| Mutualism | Lion and deer |
| Commensalism | Round worm and man |
| Parasitism | Birds compete with squirrels for nuts |
| Competition | Sea anemone on hermit crab |
| Predation | Barnacles attached to Whales |
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| Column I | Column II |
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| C. Barnacles on the back of a whale | (iii) Symbiotic obligatory relationship |
| D. Sharks and dolphins | (iv) Competition |
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| Sr. No. | Name of interaction | Interaction between |
| 1. | ? | Plasmodium and Man |
| 2. | ? | Leopard and Lion |
| 3. | ? | Clownfish and Sea-anemone |
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Statement II: According to Gause’s principle, during competition, the inferior will be eliminated. This may be true if resources are limiting.
In the light of the above statements, choose the correct answer from the options given below:
Statement I - Calotropis growing in abandoned fields is never consumed by cattle and goats.
Statement II - Calotropis produces highly poisonous cardiac glycosides.
In light of above statements, select the most appropriate answer from the option given below.
