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प्रश्न
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?
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उत्तर
Orchids are epiphytes that inhabit mangos. In this example of commensalism, the mango tree is virtually neither aided nor injured, while the orchid obtains support and access to light and air. In addition to using specialised aerial roots called velamen to absorb moisture from the atmosphere, epiphytic orchids produce their own sustenance through photosynthesis.
संबंधित प्रश्न
Write what do phytophagous insects feed on.
Define the following term:
Interspecific competition
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Clownfish and sea anemone
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Name important defense mechanisms in plants against herbivores.
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In Logistic growth curve lag phase shows______.
What is Mortality? What are its two types?
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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 |
Tabulate and analysis of two species population interaction.
Identify the interspecific interaction depicted in the following figure.
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______ interaction is the biological interaction between organisms of same population.
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| Plant Name | Type | |
| a. | Hydrilla | ______ |
| b. | Typha | ______ |
| c. | Nymphaea | ______ |
| d. | Lemna | ______ |
| e. | Vallisneria | ______ |
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Observe the graph given below.
|
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.
|
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 |
Give one example of commensalism.
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Statement I - The amount of energy available in an ecosystem increases at each successive trophic level.
Statement II - Transfer of energy from one trophic level to the other follows 10% law.
In light of the above statements, select the correct option given below.
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