You are reading the journal of an amateur naturalist who visited the Sonoran Desert in the last century. Which of his descriptions of desert plants would you question?
A) a plant whose seeds will not germinate unless soaked
B) a perennial that flowers only after years of vegetative growth and produces a large number of seeds
C) a late winter hillside covered with wildflowers
D) a common annual that produces one large seed per plant
Answer: D
You might also like to view...
You are a forester charged with increasing productivity in a South American forest newly planted with pines from Oregon
You believe that the southern forest lacks the fungal diversity needed by the North American pines, and that this lack of fungi is affecting the pines' productivity, but you have no evidence to support your ideas. To count how many fungal species were present in the Oregon forest, which methodology would you choose? A) Count all the plant species and multiply by six, as David Hawksworth did when determining the ratio of fungal to plant species in England. B) Collect all the fruiting structures (mushrooms, morels, etc.) found above ground. C) Do direct sequencing on representative soil samples from across the forest. D) Expose the trees to radiolabeled carbon dioxide and then collect the soil samples with the greatest radioactivity and do direct sequencing.
Which X-linked trait is caused by a dominant mutant allele?
a. hemophilia A b. Duchenne muscular dystrophy c. red-green color blindness d. amelogenesis imperfecta e. testicular feminizing syndrome
A serum titer involves
A. determining the highest dilution of serum that produces a visible reaction. B. the Western blot method. C. quantifying the number of infectious particles in a specimen. D. determining the lowest dilution of serum that produces a visible reaction.
Which of the following statements is not true concerning spinal nerves?
A. Spinal nerves are considered part of the CNS. B. The dorsal and ventral roots join before the spinal nerve leaves the vertebral canal. C. The spinal nerves project from the cord through intervertebral foramina. D. The dorsal root contains sensory fibers entering the gray matter. E. The ventral root contains motor fibers exiting the gray matter.