The growing center that gives rise to thick accumulations of secondary xylem and phloem is the
A. vascular cambium.
B. lateral meristem.
C. apical meristem.
D. cork cambium.
Answer: A
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A nonprofit conservation organization receives a sizeable donation and decides to purchase several thousand acres of 'high desert' in southern California. This particular type of desert has an intermediate level of species diversity and few unique species. However, much of the original areas of high desert have been converted to suburban housing and shopping. The decision by the nonprofit to preserve this area was most likely based upon what conservation strategy?
A. Conservation of endemic species hotspots B. Conservation of representative habitats C. Conservation of megadiverse areas D. Conservation of single species
Which two proteins are found in tight junctions?
a. globulins and keratin b. histone and hemoglobin c. claudins and occludins d. cadherins and adhesins
The plant hormone that promotes cell division
is
a. auxin. b. gibberellin. c. cytokinin. d. abscisic acid. e. ethylene
In what way are fungi similar to animals?
A) Both take in food from the outside. B) Both produce hair-like hyphae. C) Both form embryos when they reproduce. D) Both produce antibiotics.