The Following Questions Are Based on the Description Below

question 82

Multiple Choice

The following questions are based on the description below.
A student encounters an animal embryo at the eight-cell stage. The four smaller cells that comprise one hemisphere of the embryo seem to be rotated 45 degrees and lie in the grooves between larger, underlying cells (spiral cleavage) .
-If an undisturbed embryo is allowed to develop further, then one should expect that

• A)the first opening of the gastrula will ultimately serve as the mouth.
• B)upon metamorphosis, the resulting trochophore larva will gain a backbone.
• C)upon gastrulation, a solid ball of cells will be produced.
• D)both A and B
• E)both B and C

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Definitions:

Devil's Advocate

A person who expresses a contentious opinion in order to provoke debate or test the strength of the opposing arguments.

Brainstorming Process

A creative technique of generating a large number of ideas to solve a problem within a group, without immediate critique.

Electronic Brainstorming

A creative group problem-solving technique that uses electronic devices to gather ideas from participants simultaneously and anonymously.

Traditional Brainstorming

A creative problem-solving technique that involves generating a large number of ideas in a group setting, without immediate criticism.