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प्रश्न
While living in and on the host species, the animal parasite has evolved certain adaptations. Describe these adaptations with examples.
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उत्तर
In accordance with their lifestyles, parasites evolved special adaptations such as the loss of unnecessary sense organs, presence of adhesive organs or suckers to cling on to the host, loss of digestive system and high reproductive capacity. The life cycles of parasites are often complex, involving one or two intermediate hosts or vectors to facilitate the parasitisation of their primary host.
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संबंधित प्रश्न
During .............. typs of interaction, both organisms are benefited
- mutualism
- competition
- commensalism
- parasitism
What is mutualism?
Why do clown fish and sea anemone pair up? What is this relationship called?
Describe the mutual relationship between fig tree and wasp and comment on the phenomenon that operates in their relationship.
Define the following term:
Interspecific competition
Select the statement which explains the best parasitism.
Name the type of association:
Clownfish and sea anemone
Name the type of association: Crow feeding the hatchling of Koel
The cattle egret and grazing cattle in close association is a classic example of ______.
What is commensalism? Explain it with a suitable example.
The correct description for the interspecific interaction shown in the given figure is ______
Which population interaction can be represented by'+''-'?
Which of the following is NOT an example of mutualism?
In spite of interspecific competition in nature, which mechanism the competing species might have evolved for their survival?
What is commensalism?
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.
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.
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:
