What are plants that flower only once before they die, normally after two seasons of growth, called?  

A.  annuals
B.  biennials
C.  perennials
D.  monocots
E.  dicots


B.  biennials

Biology & Microbiology

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Approximately ____ percent of plasma is water

a. 10 b. 27 c. 55 d. 77 e. 92

Biology & Microbiology

Responsible ranching is important to the health of riparian zones because ________

a. cattle movement inadvertently aids plant reproduction in riparian zones b. a few head of cattle can destroy a riparian zone if allowed to graze there without control c. around 70% of endemic species live in riparian zones d. cattle rely on the riparian zones for food and water

Biology & Microbiology

If the number of protons in an atom does not match the number of electrons, the atom is called an ________

A) element B) isotope C) isomer D) ion

Biology & Microbiology

What is the primary function of the endocrine system?

A. Conduction B. Contraction C. Hormonal control of the body D. Protection against disease E. Cell production

Biology & Microbiology