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The supergroup that includes amoeba, fungi, and animals is:

All of the following are characteristics observed in chordate embryos EXCEPT: 

You are trying to identify an organism. It is multicellular and has neurons and muscle tissue, and definitely has vertebrae and a bony endoskeleton. It has a long and cylindrical shaped body that lacks legs.  It has smooth moist skin, small eyes and no ears.  It lives in moist tropical environments in shallow areas of water.  This organism is a/an:    

Spiral cleavage, determinant cells, schizocoelous coelem, and blastopore becomes the mouth is characteristic of:

Which of these would result from a stabilizing selection pattern:

Plants are thought to have evolved in what sequence?

Which of the following describes an example of possible sympatric speciation:

The theory of endosymbiosis:

A planula, polyp, and medusa are three different life stages in what type of organism:

Wild cherry (Prunus avium) is a tree that has been widely cultivated by humans for its fruit, which is also attractive to birds. Based on this information, wild cherry is most closely related to which of the following plants?