Question

Pyramid of numbers in a grassland/tree ecosystem

(a) always inverted

(b) always upright

(c) both (a) and (b)

(d) spindle-shaped.

Answer 1

Answer:(b) always upright

• Pyramid of number in a grassland/tree ecosystem is always upright.It shows the number of individual organisms at each level. In grassland, the producers, which are mainly grasses, are always maximum in number.
• This number then shows a decrease towards apex, primary consumers are lesser in number than the grasses; the secondary consumers are lesser in number than the primary consumers.
• Finally, the top consumers are least in number. Thus, the pyramid becomes upright.