Lab: Predator-Prey Density: Sundew


Lab: Predator-Prey Density: Sundew

Purpose: Determine effect of prey density on capture rate in Sundews.
Materials Provided:
    2 Potted Sundews
    2 clear cover domes
    wingless fruit flies
    Student directions and data sheet
Grade Level: 4-5 elementary, middle school, high school, undergraduate.

Sundews are beautiful, sticky carnivorous plants with leaves that slowly move to capture their prey. The amount of food they capture has a dramatic effect on their health and ability to flower and reproduce.

In this inquiry investigation, students investigate the how crowding of prey affects the capture of prey. Students make observations, collect and graphically analyze data, make inferences, and draw conclusions. They end with a good understanding of sundew prey capture in greater detail than simplying reading about it.

This series of carnivorous plant lab investigations is based on scientific inquiry standards of the National Science Education Standards, and are consistent with State Learning Objectives. Students have the opportunity to think and act like scientists during these investigations. Written and classroom tested by Michael Szesze, Awarding Winning Science Teacher.

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