Question

Pyramid of number is

• A. neither upright nor inverted
• B. always inverted
• C. either upright or inverted
• D. always upright

Answer 1

The correct option is C either upright or inverted

Pyramid of numbers
Pyramid of numbers conveys the number of individuals per unit area of various trophic levels. It can be upright or inverted.
Upright pyramid of numbers
The number of individuals at the higher trophic level decreases in the case of grassland and pond ecosystems. Hence the pyramid of numbers is upright.
Inverted pyramid of numbers
In some cases the pyramid of numbers is inverted where the number of individuals are more at higher trophic level, for example a big tree supporting a large number of birds which in turn supports a large number of ectoparasites.
Final answer
(C) either upright or inverted