A condition that is characterized by a reduction in bone mass sufficient to compromise normal function is:

All of the following are in the brain stem except:

The correct order of meninges moving from the outside – in is

____ are the primary site for receiving signals from other neurons.

Which of the following is a seedless vascular plant but is NOT a Monilophyte?

Cells in xylem:

In the vascular plant phylogeny, the Lycophytes are sister to the Euphyllophytes.

Molecular data indicate that the gnetophytes (Gnetum, Ephedra, Welwitschia) are most closely related to:

Which of the following is diploid (2N) in the pine life cycle?

Which of the following  is a fungal group that includes human pathogens, plant pathogens, mushrooms, lichens and yeasts?