¿Qué es una cadena trófica?

The video explains how energy flows through living organisms via food chains, starting with producers that convert solar energy into sugars through photosynthesis. Herbivores consume plants, and carnivores eat herbivores, but energy is lost at each level. This is illustrated by a biomass pyramid, showing fewer organisms at higher levels. Scavengers and decomposers recycle energy and nutrients back into the environment. Ultimately, almost all energy originates from the Sun.

What is the primary role of producers in a food chain?

• To consume other organisms

• To provide shelter for animals

• To convert solar energy into usable sugars

• To decompose organic matter

Why do herbivores rely on plants for energy?

• Herbivores can photosynthesize

• Plants provide shelter for herbivores

• Herbivores cannot produce their own food

• Plants are easier to catch than animals

What happens to energy as it moves up the food chain?

• It increases

• It remains constant

• It decreases

• It is completely lost

What does a biomass pyramid illustrate?

• The increase in energy at each level

• The decrease in the number of organisms at each level

• The constant energy flow in the ecosystem

• The number of producers in an ecosystem

How do decomposers contribute to the ecosystem?

• By increasing the biomass of producers

• By producing energy from sunlight

• By consuming primary consumers

• By returning nutrients to the environment