Conifers are the ONLY EXTANT form of Gymnosperm. (extant is the opposite of extinct, so extant means alive today).

In most fungi, which is the dominant ploidy in alternation of generations?

Which one of the following situations is an example of positive feedback?

A Saprobe is a creature which…

Elevation of the __________ pushes the glottis against the epiglotis, keeping food out of the esophagus.

The evolution and spread of grasses on Earth has been associated with what?

Carbon 14 degrades to form nitrogen and has a half life of 5730 years. As a single millenium (1000 years) passes, in a bone (which contains carbon isotopes in the proportions normally found on Earth), what should happen to the amount of Carbon 14 relative to the amount of Nitrogen over that time?

Which of the following is NOT a shared characteristic of all chordates?

Which of the following organisms has continual air flow across the surface of its lungs?

While snorkeling or skin diving, a student observes an active marine animal that has a series of muscular tentacles bearing suckers associated with its head. A pair of large, well-developed eyes are evident. The student is observing an animal belonging to the class: