While Sampling Marine Plankton in a Lab, a Student Encounters

question 35

Multiple Choice

While sampling marine plankton in a lab, a student encounters large numbers of fertilized eggs. The student rears some of the eggs in the laboratory for further study and finds that the blastopore becomes the mouth. The embryo develops into a trochophore larva and eventually has a true coelom. These eggs probably belonged to a(n)

• A) chordate.
• B) echinoderm.
• C) mollusc.
• D) nematode.
• E) arthropod.

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Nations with a lower standard of living, underdeveloped industrial base, and lower Human Development Index (HDI) compared to developed countries.

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Denmark

A country in Northern Europe known for its high standard of living and welfare state.

Singapore

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