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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
What is the ecological principle behind the biological control method of managing with pest insects?
Define the following term:
Commensalism
How is mutualism different from commensalism?
Define the Stenothermal organisms.
Name and explain the interaction that is seen between clownfish and sea anemones.
What is the ecological process behind the biological control method of managing pest insects?
Give one example of mutualism.
Define the following term:
Camouflage
With the help of a suitable diagram, describe the logistic population growth curve.
The number of deaths under ideal conditions is known as ______.
What is ESS?
Explain different population interactions with examples.
What is commensalism? Explain it with a suitable example.
Competition between species leads to ________.
Define the following term:
Parasitism
Using '-' to depict inhibition and '+' to depict benefit, mutualism between two species can be represented as ____________.
______ 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?
Type of interspecific interaction wherein one organism is benefited and other is harmed is called ____________.
Which population interaction can be represented by'+''-'?
Match the Columns.
| Column A | Column B | ||
| i. | Lice on humans | a. | Endoparasites |
| ii. | Ectoparasites on marine fishes | b. | Grows on hedge plants |
| iii. | Cuscuta | c. | Ectoparasites |
| iv. | Plasmodium and humans | d. | Copepods |
Lichens showing relationship between alga and fungus is an example of ____________ type of interaction.
A protozoan living in the digestive tract of a flea that lives on a dog 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 type of interaction is represented by the given figure?
Fill in the blanks
| Species A | Species B | Type of Interaction | Example |
| + | - | ______ | ______ |
| + | + | ______ | ______ |
| + | 0 | Commensalism | ______ |
Discuss the various types of positive interactions between species.
Write the observations made at the end of Connell's field, experiment on barnacles on the rocky sea coasts of Scotland.
Name any two categories of organisms that in general are adversely affected by competition.
The value of 'Z' (regression coefficient) lies in the range of ______ regardless of the taxonomic group or the region.
Interspecific interaction could be ______.
Interaction between clown fish living among the stinging tentacles of sea anemone is an example of ______.
"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.
Select the statement which best describes parasitism.
Describe mutualism.
Statement I - Calotropis growing in abandoned fields is never consumed by cattle and goats.
Statement II - Calotropis produces highly poisonous cardiac glycosides.
In light of above statements, select the most appropriate answer from the option given below.
