An Elementary School Science Teacher Decided to Liven Up the Classroom

question 27

Multiple Choice

An elementary school science teacher decided to liven up the classroom with a saltwater aquarium. Knowing that saltwater aquaria can be quite a hassle, the teacher proceeded stepwise. First, the teacher conditioned the water. Next, the teacher decided to stock the tank with various marine invertebrates, including a polychaete, a siliceous sponge, several bivalves, a shrimp, several sea anemones of different types, a colonial hydra, a few coral species, an ectoproct, a sea star, and several herbivorous gastropod varieties. Lastly, she added some vertebrates-a parrotfish and a clownfish. She arranged for daily feedings of copepods and feeder fish.
-One day, little Tommy (a student in an undersupervised class of 40 fifth graders) got the urge to pet Nemo (the clownfish) , who was swimming among the waving petals of a pretty underwater "flower" that had a big hole in the midst of the petals. Tommy giggled upon finding that these petals felt sticky. A few hours later, Tommy was in the nurse's office with nausea and cramps. Microscopic examination of his fingers would probably have revealed the presence of

• A) teeth marks.
• B) spines.
• C) spicules.
• D) nematocysts.
• E) a radula.

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Definitions:

Experimental Research

A scientific method involving the manipulation of variables to test hypotheses and establish cause-and-effect relationships between them, typically through controlled experiments.

Significant Influence

Significant influence refers to the considerable impact or effect one factor or entity has on another, often determining changes or developments.

Stream Of Consciousness

A narrative technique that presents thoughts and feelings of a character as they occur, often disregarding narrative order.

William James

An American philosopher and psychologist who is often referred to as the father of American psychology, known for his work in pragmatism and functional psychology.