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प्रश्न
In an aquarium two herbivorous species of fish are living together and feeding on phytoplanktons. As per the Gause’s Principle, one of the species is to be eliminated in due course of time, but both are surviving well in the aquarium. Give possible reasons.
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उत्तर
Each species has a specific position or functional role within the community, called a niche. According to the Gausses principle, no two species can live in the same niche. In this case, two herbivorous species are living in the same niche and feeding on phytoplanktons. It may be because of the availability of sufficient phytoplanktons/and or less number of individuals of the fish species. of the two species might have occurred. And though neither of the species has been eliminated, niche overlapping may effect the growth and development of individuals of the species.
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संबंधित प्रश्न
Select the statement which explains best parasitism.
- One organism is benefited
- Both the organisms arc benefited
- One organ is benefitted, other is affected.
- One organism is benefited, other is affected
Give one example of Mutualism.
Enlist and explain the important characteristics of a population.
Define Absolute Mortality.
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 |
Identify the interspecific interaction depicted in the following figure.
Identify the type of negative interaction.
Which of the following is NOT an example of mutualism?
Which type of interaction is represented by the given figure?
Which of the following is a partial root parasite?
What is brood parasitism? Explain with the help of an example.
Give one example for the following type.
Predator animal
Observe the set of 4 figures A, B, C and D and, answer the following questions
- Which one of the figures shows mutualism?
- What kind of association is shown in D?
- Name the organisms and the association in C.
- What role is the insect performing in B?
 Fig. (A) |
 Fig. (B) |
 Fig. (C) |
 Fig. (D) |
Sea Anemone gets attached to the surface of the hermit crab. The kind of population interaction exhibited in this case is ______.
The value of 'Z' (regression coefficient) lies in the range of ______ regardless of the taxonomic group or the region.
"Cattle and goats do not browse the Calotropis plant." Justify the statement giving reasons.
Many copepods live on the body surface of marine fish. This relationship is an example of ______.
Observe the graph given below.
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The graph represents inter-specific interaction between two species of Paramecia competing for the same resource in a culture medium. Paramecium caudatum and Paramecium aurelia were grown in separate cultures as well as in mixed cultures. It was found that each species grew in numbers according to the logistic equation.
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a) Which species is competitively superior? Support it with the data provided in the graph.
b) State the underlying principle for the above result and name the scientist associated with this principle.
c) Explain the mechanism in which two or more species competing with each other can co-exist.
OR
Graphs A and B shown below depict interaction of two species. Which graph indicates Mutualism? Give reason.
 |
 |
| A | B |
Select the statement which best describes parasitism.
