Chapter 35, Problem 4
The phase change of an apical meristem from the juvenile to the mature vegetative phase is often revealed by a. a change in the morphology of the leaves produced. b. the initiation of secondary growth. c. the formation of lateral roots. d. the activation of floral meristem identity genes.
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Most of the growth of a plant body is the result of a. cell differentiation. b. morphogenesis. c. cell division. d.cell elongation.
The innermost layer of the root cortex is the a. core. b. pericycle. c. endodermis. d. pith.
Heartwood and sapwood consist of a. bark. b. periderm. c. secondary xylem. d. secondary phloem.
Suppose a flower had normal expression of genes A and C and expression of gene B in all four whorls. Based on the ABC hypothesis, what would be the structure of that flower, starting at the outermost whorl? a. carpel-petal-petal-carpel b. petal-petal-stamen-stamen c. sepal-carpel-carpel-sepal d. sepal-sepal-carpel-carpel
Which of the following arise(s), directly or indirectly, from meristematic activity? a. secondary xylem b. leaves c. dermal tissue d. all of the above