Which of the following statements is INCORRECT about a keystone species? (1) Species other than consumers can be a keystone species (2) Keystone species has influence on a community proportionate […]
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CSIR NET Life Science Previous Year Questions and Solution on Ecology
What Defines r-Selection? Early Sexual Maturity and Other Key Traits Explained
r-selection is characterized by-(1) Early sexual maturity (2) High parental care (3) Few offsprings (4) Large sized offsprings Introduction In the study of ecology and evolutionary biology, the concept of r-selection describes […]
CSIR NET Life Science Previous Year Questions and Solution on Community Ecology
Keystone, Indicator, Umbrella, and Flagship Species: Key Roles in Conservation Biology
Following are the descriptions used by conservation biologists for characterizing species / groups in a community: A. Species with a disproportionally large effect on its environment relative to its abundance […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Key Traits of r-Selected Species: Understanding Large Clutch Size and Reproductive Strategy
r-selected species have (1) Long generation time (2) Large clutch size (3) More parental care (4) Specialized niche Introduction In ecology, species are often categorized based on their reproductive strategies […]
CSIR NET Life Science Previous Year Questions and Solution on Community Ecology
Umbrella Species: Conserving Entire Ecosystems Through Strategic Protection
Species serving as a proxy for entire communities and ecosystems, so that the entire system is conserved if they are conserved, are known as: (1) indicator species. (2) flagship species. […]
CSIR NET Life Science Previous Year Questions and Solution on Community Ecology
Dominant, Keystone, Indicator, and Flagship Species: Understanding Their Ecological Roles and Conservation Importance
Following four types of species were observed in a community: A. Species A has a large effect on community because of its abundance. B. Species B has a large role […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Metapopulation Dynamics and Habitat Conservation: Identifying the Most Accurate Statements
Given below are a set of statements about metapopulation dynamics and habitat conservation: A. The sizes of suitable patches are important because demographic stochasticity can lead to extinction, especially in […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
How Metapopulation Subpopulations Differ: The Role of Immigration and Emigration in Population Dynamics
The dynamics of any subpopulation within a metapopulation differs from-that of a normal population in that the (1) birth rates are lower than the death rates. (2) death rates are […]
CSIR NET Life Science Previous Year Questions and Solution on Community Ecology
Ruderal Species: Adaptations and Ecology in High Disturbance, Low Competition Environments
Ruderal species are those which are found in the environments with (1) low disturbance, high competition (2) high disturbance, low competition (3) low disturbance, low competition (4) high disturbance, high […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Top-Down Effects of Introducing Piscivorous Fish: Long-Term Impacts on Lake Food Webs
A small lake has three trophic levels- phytoplankton(autotrophs),Zooplankton (herbivore) and planktivorous fish (primary carnivore). Into this lake, a population of piscivorous fish (secondary carnivore) was introduced to study the ‘top-down’ effects”. What is the expected […]
