Question

Ecologist studied an area of wodland and estimated the biomass of each trophic level for one of the food chain in the woodland.
Some student wanted to use the data to draw a pyramid of biomass for the food chain table shown the students table.
The student added a column to calculate the width of the bars they would need to draw

Sr.No	Tropic level	Biomass/gm^{-2}	width of bar/cm
1.	producer	120	12.0
2.	primary consumer	48	4.8
3.	Secondary consumer	16	1.6
4.	tertiary consumer	2

(i) Complete table 3.1 by calculating the missing value and writing it in the table

Answer 1

Sr.No	Tropic level	Biomass/gm^{-2}	width of bar/cm
1.	producer	120	12.0
2.	primary consumer	48	4.8
3.	Secondary consumer	16	1.6
4.	tertiary consumer	2	0.2

Above is the completed table of the biomass.