Ecology Review

Which two types of organisms in this aquatic food web have a producer–consumer relationship?

• Microscopic algae and white suckers
• Small invertebrates and amphipods
• Phytoplankton and mummichogs
• Amphipods and channel catfish

How many predators shown in this food web are omnivores?

• 1
• 2
• 3
• 4

Tropical rain forests have the greatest biodiversity of any type of land ecosystem. How does biodiversity contribute to the sustainability of an ecosystem?

• The presence of more species with different adaptations makes it more likely that some organisms will survive an ecological disaster
• Greater genetic variation within species makes it more likely that some individuals will survive a disease outbreak.
• The presence of a variety of herbivore species that can feed on a large number of different producer species helps ensure abundant prey for predators in the ecosystem.
• All of the above

*

• Ginkgo
• Honey locust
• Horse chestnut
• Black maple

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• Grasshoppers and snakes
• hawks and frogs
• frogs and snakes
• decomposers and grasses

A consumer that hunts is called:

• a producer.
• an omnivore.
• a predator.
• a herbivore.

How many herbivores are in this web?

• 1
• 2
• 3
• 4

What percentage of energy is passed on to each tropic level?

• 10%
• 50%
• 90%
• 100%

What type of organism breaks down dead and decaying matter and returns the nutrients to the soil?

• Producers
• Consumers
• Decomposers

What is a example of a abiotic factor?

• Panda
• Turtle
• Butterfly
• weather