Parts of the food chain | 5th grade Science Worksheet | GreatSchools - Free Printable

- A: Watermelon → Water → Dispersely leaves → Mercuric → File
- B: Water plant → Water snail → Water beetle larvae → Frog → Heron
- C: In the food chain, energy flows from producers to consumers. Producers (like water plants) make their own food using sunlight. Primary consumers (like water snails) eat producers. Secondary consumers (like water beetle larvae) eat primary consumers. Tertiary consumers (like frogs) eat secondary consumers. Quaternary consumers (like herons) eat tertiary consumers. Energy decreases at each level because some is lost as heat and used for life processes.
- D: The food chain with the most trophic levels is: Water plant → Water snail → Water beetle larvae → Frog → Heron. This chain has five trophic levels, while the other has four. More trophic levels mean more energy loss overall, so this chain is less efficient in transferring energy from the sun to the top predator.