The following graphs show the population growth of two species P and Q, each growing either alone (a) or in the presence of other species (b). The most important conclusion […]
Tag: CSIR NET Life Science PYQ and Solution Species Interactions
CSIR NET Life Science PYQ and Solution Species Interactions
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CSIR NET Life Science Previous Year Questions and Solution on Ecology
Commensalism in Nature: The Orchid and Mango Tree Example
An example of the species interaction called commensalism is (1) nitrogen-fixing bacteria in association with legume plant roots. (2) A microbes in living human gut. (3) female mosquito deriving nourishment […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Gause’s Exclusion Principle: Understanding Its Application in Ecology
Gauss exclusion principle applies for (1) Intraspecfiic competition (2) Interspecific completion (3) Predation (4) Niche tolerance What Is Gause’s Exclusion Principle? Gause’s Exclusion Principle states that when two species compete […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Mycorrhizal Fungi and Plants: What Happens When Soil Nutrient Levels Are High?
Mycorrhizal fungi are associated with a large variety of plant species. The diagram below shows the cost- benefit curves from individual plants with or without mycorrhizal fungi associated with the […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Decoding Ecological Interactions: Understanding the Matrix of Species Relationships
Given below is a matrix of possible interactions beneficial. (+), harmful (-), Neutral (0) between species 1 and (2) The names of interactions, A, B, C and D, respectively; are […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Positive and Negative Interactions in a Spartina Salt Marsh Food Chain
A food chain involving Spartina (a plant), the marsh periwinkle snail, the blue crab and an unknown fungus was identified in a Spartina-dominated salt marsh in North America. A study […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Commensalism: The +0 Ecological Interaction Explained
If + represents the beneficial interaction and – represents the harmful interaction, then the commensalism may be designated as interaction- (1) ++ (2) + – (3) + 0 (4) – […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Commensalism: The Ecological Interaction Where One Organism Benefits Without Affecting the Other
In an interaction one organism is producing the organic matter but it is of no use for itself, while another is using this matter and dependent on it. Such an […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Positive-Negative (+ -) Interactions in Ecology: Predation and Parasitism Explained
Positive-Negative (+ -) type of interaction is seen in (1) Predation, Parasitism (2) Predation, Commensalisms (3) Parasitism, Mutualism (4) Mutualism, Proto cooperation What Are Positive-Negative (+ -) Interactions? In ecology, […]
