Advertisements
Advertisements
प्रश्न
Define community.
Advertisements
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
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.
What is the ecological principle behind the biological control method of managing with pest insects?
Define the following term:
Commensalism
Select the statement which explains best parasitism.
Define the Stenothermal organisms.
Association between sea anemone and Hermit crab in gastropod shell is that of.
Name the type of association: Crow feeding the hatchling of Koel
Name the type of association: Hummingbirds and host flowering plants
Name important defense mechanisms in plants against herbivores.
The cattle egret and grazing cattle in close association is a classic example of ______.
What is population ecology?
What is population interaction? Explain the interactions in Mutualism and Competition.
Define the following term:
Parasitism
Using '-' to depict inhibition and '+' to depict benefit, mutualism between two species can be represented as ____________.
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.'?
Identify the correct pair that exhibits commensalism.
Which of the following is TRUE for amensalism?
Which one of the following is an example of predation?
A protozoan living in the digestive tract of a flea that lives on a dog is an example of ______
Rafflesia an arnoldii is an example of ______.
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 ______.
The presence or interference of one species leads to reduction in feeding efficiency of other species is termed as
Which type of interaction is represented by the given figure?
Lichens are association of ______.
What is mycorrhiza?
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 | ______ |
Observe the set of 4 figures A, B, C and D and, answer the following questions
- Which one of the figures shows mutualism?
- What kind of association is shown in D?
- Name the organisms and the association in C.
- What role is the insect performing in B?
 Fig. (A) |
 Fig. (B) |
 Fig. (C) |
 Fig. (D) |
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
Sea Anemone gets attached to the surface of the hermit crab. The kind of population interaction exhibited in this case is ______.
A bird laying its egg in the nest of another bird is the type of ______.
A Tight one-to-one relationship between many species of fig tree and certain wasps is an example of ______.
Mention the scientific name of protozoan parasite that causes Amoebiasis.
Give one example of commensalism.
Association between clown fish and sea anemone is ______.
