3
MCQ (Single Correct Answer)
Productivity is the rate of production of biomass expressed in terms of
(i) $\left(\mathrm{kcal} \mathrm{m}^{-3}\right) \mathrm{yr}^{-1}$
(ii) $\mathrm{g}^{-2} \mathrm{yr}^{-1}$
(iii) $\mathrm{g}^{-1} \mathrm{yr}^{-1}$
(iv) $\left(\mathrm{kcal} \mathrm{m}^{-2}\right) \mathrm{yr}^{-1}$
A
(ii)
B
(iii)
C
(ii) and (iv)
D
(i) and (iii)
4
MCQ (Single Correct Answer)
An inverted pyramid of biomass can be found in which ecosystem?
A
Forest
B
Marine
C
Grass land
D
Tundra
5
MCQ (Single Correct Answer)
Which of the following is not a producer?
A
Spirogyra
B
Agaricus
C
Volvox
D
Nostoc
6
MCQ (Single Correct Answer)
Which of the following ecosystems is most productive in terms of net primary production?
A
Deserts
B
Tropical rain forests
C
Oceans
D
Estuaries
7
MCQ (Single Correct Answer)
Pyramid of numbers is
A
Always upright
B
Always inverted
C
Either upright or inverted
D
Neither upright nor inverted