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प्रश्न
Define Community.
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उत्तर
A community is an assemblage of populations of different species living in the same area and interacting with one another.
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संबंधित प्रश्न
Which day is observed as ‘World Environment Day’?
Give the role of VAM related to soil fertility.
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An orchid plant is growing on the branch of a mango tree. How do you describe this interaction between the orchid and the mango tree?
How is mutualism different from commensalism?
Answer the following question.
Mention the term used to describe a population interaction between an orchid growing on a forest tree.
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Define the following term:
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Community is defined as ______.
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Define the following term:
Parasitism
Using '-' to depict inhibition and '+' to depict benefit, mutualism between two species can be represented as ____________.
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Statement I: If one or two species are lost, it may not affect proper functioning of ecosystem.
Statement II: Loss of key species causes serious threat to functioning of ecosystem. Choose the correct alternative with reference to the above statements
Identify the morphological means of defence to avoid herbivores shown by plants.
The interspecific interaction between Cuckoo and Crow is ______
Cattle egrets always foraging close to the grazing cattle is an example of ____________.
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Which one of the following pair does NOT show commensalism?
Substantiate by giving two reasons as to why a holistic understanding of the flora and fauna the cropland is required before introducing an appropriate biocontrol method.
Rafflesia an arnoldii is an example of ______.
Amensalism can be represented as ______
Lichens are association of ______.
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| Plant Name | Type | |
| a. | Hydrilla | ______ |
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| c. | Nymphaea | ______ |
| d. | Lemna | ______ |
| e. | Vallisneria | ______ |
Observe the set of 4 figures A, B, C and D and, answer the following questions
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- What kind of association is shown in D?
- Name the organisms and the association in C.
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 Fig. (A) |
 Fig. (B) |
 Fig. (C) |
 Fig. (D) |
While living in and on the host species, the animal parasite has evolved certain adaptations. Describe these adaptations with examples.
Pick out the appropriate association representing brood parasitism.
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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 |
What are the special adaptations that endoparasites show?
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