Q.1
What is the definition of net primary productivity (NPP)?
Gross Primary Productivity (GPP) - ecosystem respiration (R eco)
Net ecosystem productivity (NEP) + respiration by primary producers (Ra)
Gross Primary Productivity (GPP) - respiration by primary producers (Ra)
Ecosystem respiration (R eco) + respiration by primary producers (Ra)
Q.2
Remora sharks attach themselves to bigger animals (usually whales) to feed on scrap food. The whales are unaffected. What is the name of this relationship?
Mutualism
Ammensalism
Commensalism
Parasitism
Q.3
According to r/K selection theory (of life-history evolution), K selected species has which characteristics?
Lower fecundity, lower mortality of young
Lower fecundity, higher mortality of young
Higher fecundity, lower mortality of young
Higher fecundity, higher mortality of young
Q.4
Nitrates ((NO3-) get converted to atmospheric nitrogen (N2) as nitrogen cycles in an ecosystem. What is the name of this process?
Assimilation
Nitrification
Nitrogen fixation
Denitrification
Q.5
The finches Darwin observed had different beak shapes and sizes despite being closely related. This is a result of which process?
Succession
Niche differentiation
Area affect on extinction rate
Species invasion