According to Odum the light absorbed by the plant cover in terms of kcal/m2/day is:
A.150
B.1,500
C.300
D.3,000
Category: Ecology and General Silviculture Mcqs
This is an inverted pyramid:
A.Pyramid of numbers in a grassland ecosystem
B.Pyramid of energy in a pond ecosystem
C.Pyramid of biomass in a grassland ecosystem
D.Pyramid of biomass in a pond ecosystem
Which of the following has the largest amount of energy?
A.Producers
B.Primary consumers
C.Secondary consumers
D.Disinfactants
One of the major difficulties in the biological control of insect pests is that:
A.The predator develops a preference to other diets and may itself become a pest
B.They do not always survive when transferred to a new environment
C.The method is less effective as compared to the use of insecticides
D.The practical difficulty in introducing the predator to specific area
When the number of organisms at successive levels are plotted, they assume the space of a pyramid. This is called the pyramid of:
A.Energy
B.Number
C.Biomass
D.Both (a) and (c)
Hydrological cycle is under the control of:
A.Grasslands
B.Forests
C.Planktons
D.Epiphytes
Which of the following food chain may not be directly dependent upon solar energy?
A.Grazing
B.Detritus
C.Soaking
D.Depleting
The solar radiations are the sole source of:
A.Energy
B.Materials
C.Both (a) & (b)
D.Standing state
An ecosystem is a structure that is:
A.Always temporary
B.Always permanent
C.Either of these
D.Rarely permanent
