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

Correct answer:- (a) always upright

Explanation:- 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.