Advertisements
Advertisements
प्रश्न
Define the following term:
Commensalism
Advertisements
उत्तर १
An interaction in which one species benefits while the other is neither benefited nor harmed is called commensalism.
उत्तर २
Commensalism is the interaction between two living individuals of different species in which one is benefited while the other is neither harmed nor benefited except to a negligible extent.
संबंधित प्रश्न
During .............. typs of interaction, both organisms are benefited
- mutualism
- competition
- commensalism
- parasitism
What is mutualism?
Apart from being a part of the food chain, predators play other important roles. Mention any two such roles supported by examples.
Explain mutualism with the help of any two examples.
Why do clown fish and sea anemone pair up? What is this relationship called?
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?
Name the type of association: Crow feeding the hatchling of Koel
Define community.
Define Absolute Mortality.
What is population ecology?
Predation and parasitism are which type of interactions?
The relationship between sucker fish and shark is _________.
Which principle/theory states that 'Two closely related species competing for the same resources cannot co-exist indefinitely and the competitively inferior will be eliminated eventually.'?
Mutualism can be represented as the interaction between ____________.
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.
Identify the interspecific interaction which one species is benefited and other is neither banned nor benefited.
Which one of the following is an example of predation?
Which one of the following pair does NOT show commensalism?
Exarch xylem is found in:
The presence or interference of one species leads to reduction in feeding efficiency of other species is termed as
A population has more young individuals compared to the older individuals. What would be the status of the population after some years?
Define stenohaline species.
What is commensalism?
Give one example for the following type.
Camouflaged animal
Give one example for the following type.
Phytophagous animal
Give one example for the following type.
Chemical defense agent
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 ______.
Interspecific interaction could be ______.
"Abingdon tortoise in Galapagos islands became extinct within a decade on introduction of goats in the island." Explain giving reason.
"Some species of insects and frogs have evolved with various specific features that help them from being detected."
- Justify the statement giving reasons.
- Mention any two such features.
Write a note on parasitism.
In which interaction of species, both the species are at a loss?
The diagram given below shows the life cycle of a malarial parasite. Study it carefully and answer the questions that follows:
- Name the hosts in which the asexual phase and sexual phase of the life cycle takes place.
- Identify the infective stage labelled ‘D’.
- Name the structure labelled ‘A’ and ‘E’.
- Give any one symptom of malaria.
Statement I: Gause’s ‘Competitive Exclusion Principle states that two closely related species competing for the same resources cannot co-exist indefinitely and competitively inferior one will be eliminated eventually.
Statement II: In general, carnivores are more adversely affected by competition than herbivores.
In the light of the above statements, choose the correct answer from the options given below:
