Question

question 19
1 pts
a food chain is best described as:
a set of chemical reactions in which food is digested in an organism
a series of organisms through which energy flows from plants to predators
the unbroken succession of organisms from one generation to another
the path nutrients travel from soil to organism and back to soil
question 20
1 pts

Explanation:

A food chain is a linear sequence of organisms. Producers (like plants) convert sunlight into energy. Primary consumers eat producers, secondary consumers eat primary consumers, and so on. Energy flows from plants (producers) to various levels of predators (consumers).

• The first option is about digestion (a biochemical process in an organism, not a food - chain concept).
• The third option is about succession (a community - level ecological process over time, not a food - chain).
• The fourth option is about nutrient cycling (a different ecological process than energy flow in a food - chain).

Answer:

A series of organisms through which energy flows from plants to predators.