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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
State Gause’s competitive exclusion principle.
Describe the mutual relationship between fig tree and wasp and comment on the phenomenon that operates in their relationship.
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?
Give one example of interspecific competition.
Name the type of association: Crow feeding the hatchling of Koel
What is the ecological process behind the biological control method of managing pest insects?
Explain different population interactions with examples.
Predation and parasitism are which type of interactions?
Tabulate and analysis of two species population interaction.
Define the following term:
Parasitism
Using '-' to depict inhibition and '+' to depict benefit, mutualism between two species can be represented as ____________.
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.
Type of interspecific interaction wherein one organism is benefited and other is harmed is called ____________.
Which one of the following is an example of predation?
Which one of the following is NOT an example of commensalism?
A protozoan living in the digestive tract of a flea that lives on a dog is an example of ______
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 ______.
______ 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.
Which of the following is not an example of commensalism?
Which one of the following is one of the characteristics of a biological community?
An interaction favourable to both population but no obligatory to either is ______.
Which type of interaction is represented by the given figure?
In spite of interspecific competition in nature, which mechanism the competing species might have evolved for their survival?
Lichens are association of ______.
What is mycorrhiza?
What is brood parasitism? Explain with the help of an example.
In a pond, we see plants which are free-floating; rooted–submerged; rooted emergent; rooted with floating leaves; Write the type of plant against the following examples.
| Plant Name | Type | |
| a. | Hydrilla | ______ |
| b. | Typha | ______ |
| c. | Nymphaea | ______ |
| d. | Lemna | ______ |
| e. | Vallisneria | ______ |
Lianas are vascular plants rooted in the ground and maintain erectness of their stem by making use of other trees for support. They do not maintain direct relation with those trees. Discuss the type of association the lianas have with the trees.
Discuss the various types of positive interactions between species.
The value of 'Z' (regression coefficient) lies in the range of ______ regardless of the taxonomic group or the region.
Match the Column I with Column II.
| Column I | Column II |
| A. Lichen | (i) Commensalism |
| B. Shark and Pilot fish | (ii) Mutualism |
| C. Barnacles on the back of a whale | (iii) Symbiotic obligatory relationship |
| D. Sharks and dolphins | (iv) Competition |
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.
Describe mutualism.
Give one example of parasitism.
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:
