Question

The number of individuals in grass land ecosystem is given below.

Grass – 5842,000

Grasshopper – 7,08,000

Frogs – 3,54,000

Snakes – 3

1. Draw a pyramid representing the relationship of the given organisms in terms of number.

2. Give justification for the shape of pyramid.

Answer 1

1.

2. The pyramid is an upright one the largest number being producers (grasses) forms the base of the pyramid. The Herbivores or primary consumer at the next level (grass hopper) are second to producers in number.

The third layer is occupied by secondary consumers (Frogs) which are smaller in number compared to the primary consumer. The tertiary consumer (snakes) are the least in number and occupies the top most level. Thus an upright pyramid is obtained.