Which of the following is non-renewable source of energy:
A.Mineral
B.Water
C.Forest
D.Solar energy
Category: Agriculture Ecology and General Silviculture Mcqs
Which of the following characterizes the biomass in an ecosystem?
A.The biomass of producers is less than the combined biomass of consumers and decomposers
B.No general statement can be made about relative biomass of different ecological groups
C.The biomass of secondary consumers is usually greater than the biomass of primary consumers
D.The biomass of producers is generally greater than the biomass of primary consumers
Food chains are met with only in the:
A.Sea
B.Forests
C.Deserts
D.In all these places
The gross primary production is maximum in the following ecosystem:
A.Open sea
B.Grasslands and pastures
C.Coniferous forests
D.Tropical and sub-tropical forest
In lake ecosystem, the pyramid of biomass is:
A.Upright
B.Inverted
C.Anything possible
D.None is correct
The word ecosystem was coined by:
A.Daubenmire/R.Misra/Koestle
B.Tansley
C.Weaver and Clements
D.Odum/Kormondy
An ecosystem may be defined as:
A.A localized association of several plants and animals
B.Different communities of plants, animals and microbes, together with their physico-chemical environments
C.Different communities of plants and microbesm plus their physico-chemical environments
D.None of the above
Carnivores are:
A.Usually primary consumers
B.Usually secondary consumers
C.Usually decomposers rather than consumers
D.Usually secondary or tertiary consumers
Mark the correct statement:
A.Phagotrophs are transducers
B.Some herbivores are converters
C.Microconsumers are saprotrophs
D.All are correct
When a big fish eats a small fish, which easts water-fleas supported by phytoplankton, the water leas are:
A.Primary consumers
B.Producers
C.Secondary consumers
D.Top consumers in this food chain
