The pyramid of energy in terrestrial ecosystem is

Upright
Inverted
Spindle shaped
Irregular

The correct answer is A. Upright.

A pyramid of energy is a graphical representation of the energy flow through an ecosystem. It is a pyramid because the amount of energy decreases as you move up the pyramid, from the producers to the consumers. This is because some of the energy is lost as heat at each trophic level.

An upright pyramid of energy is one in which the amount of energy decreases as you move up the pyramid. This is the most common type of pyramid of energy.

An inverted pyramid of energy is one in which the amount of energy increases as you move up the pyramid. This is rare, but it can occur in ecosystems where the producers are very small and the consumers are very large.

A spindle-shaped pyramid of energy is one in which the amount of energy is relatively constant at each trophic level. This can occur in ecosystems where the producers and consumers are similar in size.

An irregular pyramid of energy is one in which the amount of energy does not follow a clear pattern. This can occur in ecosystems where there is a lot of variation in the size of the producers and consumers.

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