This phylum of vascular, seed-bearing plants has only about 70 living species in three genera,
including Welwitschia and Ephedra. Some species have a two-step fertilization process, similar to
fertilization in angiosperms.
a. Cycadophyta
b. Anthophyta
c. Gnetophyta
d. Coniferophyta
e. Ginkgophyta
C
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Which form is considered diagnostic in the life cycle of Pneumocystis jirovecii?
a. Bradyzoite b. Trophozoite c. Sporocyte d. Cyst
Would drinking a gallon of tap water, a gallon of sea water, or a gallon of beer produce the most
urine? Why?
What will be an ideal response?Which of the following does NOT describe
some aspect of polysaccharides? a. energy storage b. straight or branched chain c. glucose subunits d. contain only carbon, hydrogen, and oxygen atoms e. produced by condensation reactions
The problem that occurred during meiosis in sperm formation was
A) nondisjunction involving a Y chromosome. B) an inversion of the X chromosome, preventing the pairing of sex chromosomes. C) failure of the second meiotic division to take place. D) formation of diploid sperm.