Among the following which is best indicator of water pollution due mixing of human feces (1) E. coli (2) Trypanosoma (3) Paramecium (4) Bacillus Water pollution caused by the mixing […]
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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 applied ecology
Red Tides: The Role of Dinoflagellates in Oceanic Toxic Algal Blooms
Periodic toxic algal blooms in oceans leading to red tides are due to (1) Dinoflagellates (2) Cyanobacteria (3) Brown-Red algae (4) Green Algae Periodic toxic algal blooms in oceans, commonly […]
CSIR NET Life Science Previous Year Questions and Solution on applied ecology
Releasing High BOD Water into a Freshwater Lake: Effects and Ecological Consequences
What would happen if we release the high BOD water into fresh lake? (1) Opacity will decrease (2) Number of organism will decrease (3) Amount of dissolved oxygen will decrease […]
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 applied ecology
Why Pesticide Use Sometimes Increases Pest Populations: Causes and Consequences
On application of certain pesticide it was observed thatthe population of pests instead of decreasing actuallyincreased. The probable cause could be (1) Development of resistance (2) Pesticide is ineffective (3) […]
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 applied ecology
How Automobile Pollution Causes Respiratory Problems: The Role of Fine Particulate Matter (SPM<10µm)
Main cause of respiratory problem arising frompollution from automobile combustion is due to- (1) NOx (2) SO2 (3) SPM50µm Automobile combustion is a major source of urban air pollution, contributing […]
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 applied ecology
Minamata Disease: A Classic Example of Bioaccumulation and Biomagnification
Minimata disease is an example of- (1) Bioaccumulation (2) Bio concentration (3) Bio magnification (4) Air Pollution Minamata disease stands as one of the most harrowing examples of how industrial […]
