Diffusion is slow over distances of a few millimeters, making it an unsuitable mechanism by which large animals
exchange gases and nutrients between the external and internal environments.
Indicate whether the statement is true or false.
ANSWER: True
Biology & Microbiology
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Water loss from a terrestrial insect's surface is minimal due to which of the following structures?
A) chitin and the cuticle B) tracheae and spiracles C) a proteinaceous epidermis D) a long alimentary canal
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In general, the blastomeres of this region form the endodermal tissues.
A. animal pole B. vegetal pole C. equator region D. membrane
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The oxygen consuming property of a wastewater sample is designated by the term
A. lagooning. B. stabilization. C. activation. D. biochemical oxygen demand.
Biology & Microbiology
Members of this Lophotrochozoan phylum include earthworms, bristle worms, and leeches
a. Rotifera b. Mollusca c. Platyhelminthes d. Annelida e. Nemetera
Biology & Microbiology