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प्रश्न
Define community.
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उत्तर १
A community is an assemblage of populations of different species living in the same area and interacting with one another.
उत्तर २
A community is an association of a number of different interrelated populations belonging to different species in a common environment. A community is characterised by species diversity, coexistence and interdependence.
संबंधित प्रश्न
Mention any two examples where the organisms involved are commercially exploited in agriculture.
What is the ecological process behind the biological control method of managing pest insects?
Define the following term:
Camouflage
Name important defense mechanisms in plants against herbivores.
Community is defined as ______.
The cattle egret and grazing cattle in close association is a classic example of ______.
In Logistic growth curve lag phase shows______.
What is commensalism? Explain it with a suitable example.
Tabulate and analysis of two species population interaction.
Define the following term:
Parasitism
Differentiate between predator and prey.
Two species competing for the same resources, avoid competition by choosing different times for feeding, also known as ______
Mutualism can be represented as the interaction between ____________.
______ is the adaptation of an organism i which it matches its colour with its surroundings to get protected from predators.
Which of the following is TRUE for amensalism?
Parasitism can be conectly represented as ____________.
Which one of the following is NOT an example of mutualism?
Which of the following is not an example of commensalism?
Which one of the following is one of the characteristics of a biological community?
Amensalism is an association between two species where ______.
Which of the following is a partial root parasite?
Define ectoparasite and endoparasite and give suitable examples.
Give one example for the following type.
Phytophagous animal
Discuss the various types of positive interactions between species.
In an aquarium two herbivorous species of fish are living together and feeding on phytoplanktons. As per the Gause’s Principle, one of the species is to be eliminated in due course of time, but both are surviving well in the aquarium. Give possible reasons.
The interaction between cattle egret and the buffalo is ______.
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 ______.
Mention the scientific name of protozoan parasite that causes Amoebiasis.
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.
Some orchids live on the branches of mango trees. Name the type of interaction that exists between the mango tree and the orchid.
What happens to an inferior competitor if the superior competitor is removed from the environment?
Give one example of commensalism.
Give one example of camouflage.
Explain one type of mutualism.
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:
