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प्रश्न
Give one example for the following type.
Biological control agent
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उत्तर
Biological control agent - Moth (against prickly pear cactus)
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संबंधित प्रश्न
Mention any two examples where the organisms involved are commercially exploited in agriculture.
Select the statement which explains the best parasitism.
Name important defense mechanisms in plants against herbivores.
What is population ecology?
What is Mortality? What are its two types?
The interaction in nature, where one gets to benefit on the expense of other is _________.
Predation and parasitism are which type of interactions?
Identify the morphological means of defence to avoid herbivores shown by plants.
In the given picture, identify the type of interspecific interaction.
Substantiate by giving two reasons as to why a holistic understanding of the flora and fauna the cropland is required before introducing an appropriate biocontrol method.
Amensalism can be represented as ______
What is homeostasis?
Pick out the appropriate association representing brood parasitism.
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.
Observe the graph given below.
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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.
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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.
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| A | B |
What are the special adaptations that endoparasites show?
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.
What happens to an inferior competitor if a superior competitor is present in the same environment?
