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प्रश्न
Define stenohaline species.
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उत्तर
Species that tolerate narrow range of salinity are called stenohaline species.
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संबंधित प्रश्न
Name the type of association:
Clownfish and sea anemone
What is the ecological process behind the biological control method of managing pest insects?
Name important defense mechanisms in plants against herbivores.
Define Population.
With the help of a suitable diagram, describe the logistic population growth curve.
Explain different population interactions with examples.
What is Commensalism? Explain it with a suitable example.
______ is the adaptation of an organism i which it matches its colour with its surroundings to get protected from predators.
Select the CORRECT match:
| I | II | ||
| i. | Competition | a. | Lichen |
| ii. | Commensalism | b. | Sea anemone and clownfish |
| iii. | Mutualism | c. | Lions and Leopards |
Identify the type of negative interaction.
Which type of interaction is represented by the given figure?
In spite of interspecific competition in nature, which mechanism the competing species might have evolved for their survival?
What is homeostasis?
What is brood parasitism? Explain with the help of an example.
In a pond, we see plants which are free-floating; rooted–submerged; rooted emergent; rooted with floating leaves; Write the type of plant against the following examples.
| Plant Name | Type | |
| a. | Hydrilla | ______ |
| b. | Typha | ______ |
| c. | Nymphaea | ______ |
| d. | Lemna | ______ |
| e. | Vallisneria | ______ |
Pick out the appropriate association representing brood parasitism.
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 |
Describe mutualism.
Give one example of parasitism.
