Question

About how much energy is transferred from a primary consumer to a secondary consumer?
90% of the original energy from the Sun
10% of the original energy from the Sun
10% of the primary consumer's energy
1% of the primary consumer's energy

Answer 1

10% of the primary consumer's energy

10 percent rule

Food chain refers to a process cycle from producer to consumer to decomposer.
Plants – herbivores – omnivores – carnivores Start -> Plants -> herbivore insect -> spiders -> small bird -> Snake -> hawk -> fox -> lion -> when died the body will be eaten by hyena-> when hyena died -> body get decompose and be eaten  by worms and the rest will be plant’s fertilizer.

The process of the food chain will then again takes place over and over again. 

Answer 2

Answer: The correct answer is 10% of the primary consumer's energy.

According to the law of 10 % energy transfer-

10 % of the energy is transferred from one trophic level to the subsequent trophic level in a food chain. The remaining energy is utilized in the metabolic processes of the organism or released as heat in the atmosphere.

Primary consumer ( like herbivore) and secondary consumer ( like carnivore) are the trophic levels of the food chain. Primary consumers get energy by consuming producers like plants whereas secondary consumers obtain energy by eating primary consumers.

Thus, 10 % of the energy from the primary consumer is transferred to the secondary consumer.