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प्रश्न
Define the following term:
Parasitism
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उत्तर
Parasitism is generally defined as a relationship between the two living species in which one organism is benefitted at the expense of the other. The organism that is benefitted is called the parasite, while the one that is harmed is called the host.
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संबंधित प्रश्न
Write what do phytophagous insects feed on.
Name important defence mechanisms in plants against herbivory.
Define the following term:
Interspecific competition
Select the statement which explains best parasitism.
Name the two intermediate hosts which the human liver fluke depends on to complete its life cycle so as to facilitate parasitization of its primary host.
Competition and Mutualism.
Association between sea anemone and Hermit crab in gastropod shell is that of.
Name the type of association: Hummingbirds and host flowering plants
With the help of a suitable diagram, describe the logistic population growth curve.
The cattle egret and grazing cattle in close association is a classic example of ______.
Define mutualism.
Explain any three important characteristics of population.
What is commensalism? Explain it with a suitable example.
Define population growth. Explain different types of age pyramids.
Differentiate between predator and prey.
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.'?
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 |
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?
In spite of interspecific competition in nature, which mechanism the competing species might have evolved for their survival?
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 | ______ |
Give one example for the following type.
Predator animal
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.
Give one example for the following:
An organism which can conform
Write the observations made at the end of Connell's field, experiment on barnacles on the rocky sea coasts of Scotland.
The value of 'Z' (regression coefficient) lies in the range of ______ regardless of the taxonomic group or the region.
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 ______.
Select the statement which best describes parasitism.
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 a superior competitor is present in the same environment?
Give one example of camouflage.
