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प्रश्न
What is commensalism? Explain it with a suitable example.
Explain commensalism with the help of an example.
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उत्तर
Commensalism is the interaction between two species in which one species derives benefit and the other one is neither harmed nor benefited. This is the interaction in which one species benefits and the other is neither harmed nor benefited.
An orchid growing as an epiphyte on a branch of a mango tree will benefit, while the mango tree derives no benefit.
The cattle egret and grazing cattle in close association are a classic example of commensalism. Cattle egrets always forage close to cattle; as cattle move, they flush out insects that might be difficult for the egrets to find and catch.
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संबंधित प्रश्न
During .............. typs of interaction, both organisms are benefited
- mutualism
- competition
- commensalism
- parasitism
Explain mutualism with the help of any two examples.
What is the ecological principle behind the biological control method of managing with pest insects?
Mention any two examples where the organisms involved are commercially exploited in agriculture.
Name the two intermediate hosts which the human liver fluke depends on to complete its life cycle so as to facilitate parasitization of its primary host.
Competition and Mutualism.
Select the statement which explains the best parasitism.
Community is defined as ______.
How absolute Natality differs from Realized Natality
Define mutualism.
Define population growth. Explain different types of age pyramids.
Tabulate and analysis of two species population interaction.
Using '-' to depict inhibition and '+' to depict benefit, mutualism between two species can be represented as ____________.
______ is the adaptation of an organism i which it matches its colour with its surroundings to get protected from predators.
Identify the interspecific interaction depicted in the following figure.
Brood parasitism is best explained by the example of ____________.
Match the Columns.
| Column A | Column B | ||
| i. | Lice on humans | a. | Endoparasites |
| ii. | Ectoparasites on marine fishes | b. | Grows on hedge plants |
| iii. | Cuscuta | c. | Ectoparasites |
| iv. | Plasmodium and humans | d. | Copepods |
Which of the following is NOT an example of mutualism?
Which one of the following pair does NOT show commensalism?
With the decline in the population of fig species it was noticed that the population of wasp species also started to decline. What is the relationship between the two and what could be the possible reason for decline of wasps?
______ in birds is an interesting example of parasitism in which the parasitic bird lays its eggs in the nest of its host and the host incubates them.
An interaction favourable to both population but no obligatory to either is ______.
The presence or interference of one species leads to reduction in feeding efficiency of other species is termed as
Amensalism is an association between two species where ______.
What is the interaction between two species called?
What are the organisms that feed on plant sap and other plant parts called?
Give one example for the following type.
Biological control agent
Give one example for the following type.
Phytophagous animal
Give one example for the following type.
Chemical defense agent
Fill in the blanks
| Species A | Species B | Type of Interaction | Example |
| + | - | ______ | ______ |
| + | + | ______ | ______ |
| + | 0 | Commensalism | ______ |
While living in and on the host species, the animal parasite has evolved certain adaptations. Describe these adaptations with examples.
Give one example for the following:
An organism which can conform
Carnivorous animals-lions and leopards, occupy the same niche but lions predate mostly larger animals and leopards take smaller ones. This mechanism of competition is referred to as ______.
"Abingdon tortoise in Galapagos islands became extinct within a decade on introduction of goats in the island." Explain giving reason.
What are the special adaptations that endoparasites show?
Statement I: Gause’s competitive exclusion principle states that two closely related species competing for different resources cannot exist indefinitely.
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:
Parasitism is an interaction between two organisms in which ______.
