In seed plants,
a. xylem conveys sugar from the production
site to the storage site.
b. fertilization requires water.
c. fertilization produces a zygote within the
pollen sac.
d. male gametophyte and female gametophyte
develop independently.
e. microspores enlarge to become
megaspores.
D
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All of the following are viral infections, except
A. hepatitis. B. warts. C. HIV/AIDS. D. herpes. E. chlamydia.
Plants that are dioecious are best described as having
A. flower arrangements unique to eudicots. B. all flower parts in pairs. C. flower arrangements unique to monocots. D. flower parts that may be absent at certain seasons. E. staminate and carpellate flowers on separate plants.
Which of the following statements most correctly describes meiosis?
(a) Meiosis involves two rounds of DNA replication followed by a single cell division. (b) Meiosis involves a single round of DNA replication followed by four successive cell divisions. (c) Meiosis involves four rounds of DNA replication followed by two successive cell divisions. (d) Meiosis involves a single round of DNA replication followed by two successive cell divisions.
If your mother and father both have cystic fibrosis, which is caused by a recessive allele, the odds of you inheriting
only one allele for the disorder are ____.
a. 1/4 b. 1/2 c. 3/4 d. 1 e. 0