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
What is the ecological principle behind the biological control method of managing with pest insects?
Select the statement which explains best parasitism.
How is mutualism different from commensalism?
Answer the following question.
Mention the term used to describe a population interaction between an orchid growing on a forest tree.
Name the type of association: Crow feeding the hatchling of Koel
Name important defense mechanisms in plants against herbivores.
What is Mortality? What are its two types?
Define the term population interactions. State its two types.
Define population growth. Explain different types of age pyramids.
Competition between species leads to ________.
Using '-' to depict inhibition and '+' to depict benefit, mutualism between two species can be represented as ____________.
Select the CORRECT match:
| I | II | ||
| i. | Competition | a. | Lichen |
| ii. | Commensalism | b. | Sea anemone and clownfish |
| iii. | Mutualism | c. | Lions and Leopards |
Type of interspecific interaction wherein one organism is benefited and other is harmed is called ____________.
Lichens showing relationship between alga and fungus is an example of ____________ type of interaction.
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 ______
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?
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
A population has more young individuals compared to the older individuals. What would be the status of the population after some years?
Give one example for the following type.
Phytophagous animal
While living in and on the host species, the animal parasite has evolved certain adaptations. Describe these adaptations with examples.
Pick out the appropriate association representing brood parasitism.
Interspecific interaction could be ______.
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 ______.
Observe the graph given below.
|
The graph represents inter-specific interaction between two species of Paramecia competing for the same resource in a culture medium. Paramecium caudatum and Paramecium aurelia were grown in separate cultures as well as in mixed cultures. It was found that each species grew in numbers according to the logistic equation.
|
a) Which species is competitively superior? Support it with the data provided in the graph.
b) State the underlying principle for the above result and name the scientist associated with this principle.
c) Explain the mechanism in which two or more species competing with each other can co-exist.
OR
Graphs A and B shown below depict interaction of two species. Which graph indicates Mutualism? Give reason.
 |
 |
| A | B |
Describe mutualism.
What happens to an inferior competitor if a superior competitor is present in the same environment?
Give one example of commensalism.
Give one example of camouflage.
Explain one type of mutualism.
Given below are two statements.
Statement I - The amount of energy available in an ecosystem increases at each successive trophic level.
Statement II - Transfer of energy from one trophic level to the other follows 10% law.
In light of the above statements, select the correct option given below.
Lichen is an example of which type of population interaction?
When two plant species in the same field compete for sunlight, water, and minerals, which type of population interaction is occurring?
In predation, what is the relationship between the predator and prey?
What is the sign convention for commensalism?
What is the sign convention for neutralism?
