1. Practice

2. X Explain why food webs are more realistic than food chains.
Multiple paths X

3. Explain why producers are always found at the base of a food web.
Don’t eat

4. Chemosynthetic bacteria
Differentiate between the 3 producers below.
Plant
Chemosynthetic bacteria
Phytoplankton

5. Upper layers of the ocean
State where each producer is found.
Land
Upper layers of the ocean
Hydrothermal vent

6. State which process each producer uses to obtain energy.
Photosynthesis
Photosynthesis
Chemosynthesis

7. Unlike producers, rely on other organisms for energy.
consumers

8. In this food chain, the frog is the consumer.
secondary

9. The tertiary consumer is the .
python

10. The grasshopper is the consumer.
primary

11. The eagle is the consumer.
quaternary

12. The grass is the .
producer

13. List the primary consumers in this food web (4).
rat
grasshopper
butterfly
fruit fly

14. List the secondary consumers in this food web (7).
python
rat
frog
dragonfly
thrush
wolf
eagle

15. In this food chain, the wolf is the consumer.
quaternary

16. In this food chain, the wolf is the consumer.
tertiary

17. The frog is a type of consumer known as a.
carnivore

18. Explain WHY the frog is considered a carnivore.
ONLY eats other consumers

19. The butterfly is a type of consumer known as an.
herbivore

20. Explain WHY the butterfly is considered an herbivore.
ONLY eats producers

21. Identify the omnivore in this food web.
rat

22. List the organisms that would be affected if all the mangoes disappeared.
Fruit fly X

23. If dragonflies and thrushes were eliminated, the number of fruit flies would .X X
increase

24. If dragonflies and thrushes were eliminated, the number of mangoes would .X X
decrease

25. The type of consumer found at the top of a food chain is usually a
The type of consumer found at the top of a food chain is usually a (such as fungi).
decomposer

26. Explain why there are no trophic levels beyond the decomposer.
No energy left to pass on
Used up
Lost as heat

27. Producer, herbivore, carnivore, omnivore, or decomposer?
(plant)

28. Producer, herbivore, carnivore, omnivore, or decomposer?
(chemosynthetic bacteria)

29. Producer, herbivore, carnivore, omnivore, or decomposer?

30. Producer, herbivore, carnivore, omnivore, or decomposer?

31. Producer, herbivore, carnivore, omnivore, or decomposer?
(zooplankton)

32. Producer, herbivore, carnivore, omnivore, or decomposer?

33. Producer, herbivore, carnivore, omnivore, or decomposer?

34. Producer, herbivore, carnivore, omnivore, or decomposer?
(Phytoplankton)

35. Producer, herbivore, carnivore, omnivore, or decomposer?
Giant tube worms

36. Producer, herbivore, carnivore, omnivore, or decomposer?