Which of the following is the most important contribution of molecular phylogenetics?
a. the discovery of rRNA
b. the reanalysis of the morphology of Amborella trichopoda
c. the reorganization of living systems from five to six Kingdoms
d. the reorganization of living systems into three domains
e. the realization that morphological characters are not representative of phylogenetic
relationships
D
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Almost immediately after a young leaf primordium first begins to bulge out ____
a. undifferentiated vascular tissues that will later become xylem and phloem penetrate it b. small xylem vessels penetrate it first, followed soon after by phloem c. small phloem vessels penetrate it first, followed soon after by xylem d. small xylem and phloem vessels penetrate it together e. specialized vascular tissue cells penetrate and soon differentiate into phloem or xylem vessels
Arrange the developmental stages in the proper order
a. blastula ? gastrula ? morula b. blastula ? morula ? gastrula c. gastrula ? blastula ? morula d. morula ? blastula ? gastrula e. morula ? gastrula ? blastula
Which of the following protist groups does NOT include members that move by means of flagella?
a. Rhodophyta b. Excavates c. Alveolates d. Cercozoa e. Heterokonts
Four of the five choices listed below are
characteristics of the plasma membrane. Select the exception. a. phospholipid b. fluid mosaic c. lipid bilayer d. inert and impermeable e. hydrophobic tails