Q5 of 67 Page 98

Which of the following is not a producer?

Agaricus is a fungus which is not a producer as it is non-photosynthetic. Thus, they are not able to make their own food unlike the other options – Spirogyra, Volvox and Nostoc. The other options are all able to produce their own food.

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3

Productivity is the rate of production of biomass expressed in terms of:

i. (kcal m–3) yr–1


ii. g–2 yr–1


iii. g–1 yr–1


iv. (kcal m–2) yr–1


 4

An inverted pyramid of biomass can be found in which ecosystem?

 6

Which of the following ecosystems is most productive in terms of net primary production?

 7

Pyramid of numbers is: