Contrast the medusa body form and the polyp body form of a cnidarian

What will be an ideal response?


The medusa has the opening to the digestive tract and tentacles facing up. In the polyp the opening and tentacles hang down.

Biology & Microbiology

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Which of the following invertebrates is most

closely related to vertebrates?

a. lancelets b. tunicates c. sea stars d. earthworms e. leeches

Biology & Microbiology

Despite a great deal of variation across the animal kingdom, Hox genes tend to appear along a chromosome or chromosomes in the same order that they are expressed in along the anteroposterior axis of an embryo

This pattern of Hox gene expression is called the ________. [four words] Fill in the blank(s) with correct word

Biology & Microbiology

How do tractive forces affect the airways during inspiration?

A) decrease in compliance B) increase in compliance C) increase in airway resistance D) bronchodilation E) decrease in airway resistance

Biology & Microbiology

The phylogentic tree is most consistent with which of the following hypotheses:

a. The same types of anole lizards evolved independently on each of the islands b. Each lizard type evolved once on one of the islands and then migraded to the other islands where it evolved into different species c. "Each lizard type evolved on the mainland and was brought to each of the islands, where it evolved into different species" d. All species of lizards appeared at exactly the same time on

Biology & Microbiology