The efficiency of primary production in an ocean is:
A. 5%
B. 3.50%
C. 1%
D. 0.20%
According to Lindemann, the total solar input in terms of gcal/cm2/year is:
A. 112,887
B. 118,872
C. 181,872
D. 112,788
Which of the following belong to the same trophic level?
A. Yeast and Monotropa
B. Rhizopus and Riccia
C. Ulothrix and Yeast
D. All of these
An ecosystem is a structure that is:
A. Always temporary
B. Always permanent
C. Either of these
D. Rarely permanent
The ecological pyramids were first designed by:
A. Clements
B. Kormondy
C. Warming
D. Elton
The pyramid of biomass in a parasitic ecosystem is:
A. Upright
B. Inverted
C. Linear
D. Rhomboidal
The solar radiations are the sole source of:
A. Energy
B. Materials
C. Both (a) & (b)
D. Standing state
The term omnivore is applied to:
A. Herbivore and carnivore
B. Carnivore and detrivore
C. Herbivore and detrivore
D. All of these
The term homeostasis in an ecosystem refers to:
A. A feedback mechanism
B. A self-regulatory mechanism
C. State of equilibrium
D. Influence of productio
The gross production minus losses in an ecosystem is indicated as:
A. Net production
B. Secondary production
C. Net storage
D. Net primary production
