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प्रश्न
What is homeostasis?
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उत्तर
Property of self-regulation and tendency to maintain a steady state within an external environment which is liable to change is called Homeostasis. It is essential for the living organisms.
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संबंधित प्रश्न
What is mutualism?
Write what do phytophagous insects feed on.
Select the statement which explains best parasitism.
- One organism is benefited
- Both the organisms arc benefited
- One organ is benefitted, other is affected.
- One organism is benefited, other is affected
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.
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
Give one example of Mutualism.
Name important defense mechanisms in plants against herbivores.
With the help of a suitable diagram, describe the logistic population growth curve.
Competition between species leads to ________.
______ interaction is the biological interaction between organisms of same population.
Mycorrhizae are the example of ______.
An interaction favourable to both population but no obligatory to either is ______.
Which type of interaction is represented by the given figure?
What is mycorrhiza?
Discuss the various types of positive interactions between species.
A bird laying its egg in the nest of another bird is the type of ______.
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 |
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.
