Summarize the effects of each of the six classes of plant hormones. What will be an ideal response?
Concepts to Consider: Auxins promote cell elongation, tropisms, apical dominance, and fruit
development; gibberellins promote stem elongation, flowering, and germination; cytokinins promote
mitosis and differentiation, delay senescence, and are involved in apical dominance; ethylene aids in
the ripening of fruits, promotes apical dominance, thigmomorphogenesis, and leaf abscission; abscisic
acid is an environmental stress hormone that causes stomatal closing and prevents seed germination in
undesirable conditions; brassinosteroids affect many developmental processes such as cell division,
cell elongation, light-induced differentiation, vascular development, and seed germination.
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The cells of the members of the kingdom Protista differ from those of the domain Bacteria in that
A. none of the Protista have cell walls. B. all of the Protista have a nucleus. C. none of the Protista have flagella. D. all of the Protista are smaller than Bacteria.
What is the name of the lignified, tubelike structures that branch throughout the body of some plants, conducting water and solutes?
a. root systems b. rhizomes c. shoot systems d. vascular tissue
The fluorescent tag likely did not become incorporated into which of the following organelles?
A) "receiving" side of Golgi B) "shipping" side of Golgi C) mitochondria D) rough ER
Adenoviruses are
A) All of these choices are correct B) Causes of conjunctivitis, common cold, and an acute hemorrhagic cystitis in children. C) Transmitted by respiratory and ocular secretions. D) Nonenveloped, double-stranded, DNA viruses. E) Causes of outbreaks among military recruits.