Which of these is/are considered lateral meristem(s)?
a. apical meristems only
b. vascular cambium only
c. cork cambium only
d. pericycle and periderm
e. vascular cambium and cork cambium
e
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The figure shows a simplified phylogeny of closely related species of primates. This tree was proposed by comparing DNA sequence changes in the gene for cytochrome oxidase subunit II. The vertical scale represents time and the branch points represent common ancestors. What species did ancestor B give rise to?
A. Siamangs and orangutans.
B. All of the species except orangutans.
C. All of the species except siamangs.
D. All of the species except siamangs and pigmy chimps.
In an experiment, the development of the occipital lobe of a rat was inhibited. Predict the most likely consequence of
this procedure.
a. The rat was not able to make noises. b. The rat was unable to move. c. The rat was unable to detect touch. d. The rat was not able to process visual input. e. The rat could not right itself.
What is the name of the large opening in the skull that allows the spinal cord to pass through?
A. cranial magnum B. occipital foramen C. parietal opening D. foramen magnum
How is the HIV provirus different from a lambda-phage prophage?
A) The HIV provirus is integrated permanently into the host cell's DNA. B) All subsequent generations of HIV-infected cells carry the provirus. C) All the offspring of a cell infected with a prophage will contain the virus. D) The HIV provirus is inactive inside the host cell. E) Lambda phage-infected cells produce virus slowly over time.