Unit: Ecology Part 2

In this energy pyramid, which organism has the least amount of energy available?

• Producers

• Herbivores

• Carnivores

• Top Predator

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What would likely occur if a disease removed the blue jay population from this food web? Select TWO correct answers.

• The moose population would decrease.

• The insect population would increase

• The owl would have one less kind of organism to eat

• The fox would not be able to obtain any food.

• The moose would become extinct.

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A person living near this pond notices that the mosquito population has decreased dramatically over the past two weeks. Referencing the mosquito population included in this food web, what is a plausible reason for the decrease in mosquito population?

• mosquito larvae were eaten by the duckweed

• conditions led to a rapid increase in the number of minnows

• many of the martin houses were destroyed by a recent storm

• the frog population decreased because of a recent storm

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A rabbit cannot digest the fiber in grasses and leaves, its primary food sources. Bacteria inside the rabbit's digestive system ferment the fiber, providing energy to the bacteria and digestible fatty acids to the rabbit. Suppose an antibiotic kills all of these bacteria. Which of the following will most likely happen to the rabbit?

• It will start fermenting fiber on its own

• 
  It will die of malnutrition and starvation

• It will develop a taste for food low in fiber

• It will begin chewing food more thoroughly

A partial Texas food chain is shown. The populations of which organisms will most likely increase as a result of a disease that suddenly reduce the population of texas horned lizards?  

• Grasses and Ants

• Ants and Grasshoppers 

• Grasshoppers and Texas cottonmouth

• Texas cottonmouth and Red-shouldered hawk

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