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Problem 1
Most of the growth of a plant body is the result of a. cell differentiation. b. morphogenesis. c. cell division. d.cell elongation.
Problem 2
The innermost layer of the root cortex is the a. core. b. pericycle. c. endodermis. d. pith.
Problem 3
Heartwood and sapwood consist of a. bark. b. periderm. c. secondary xylem. d. secondary phloem.
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.
- The vascular cambium gives rise to (A) all xylem. (B) all phloem. (C) primary xylem and phloem. (D) secondary xylem and phloem
Problem 5
- The root pericycle is the site where (A) secondary growth originates. (B) root hairs originate. (C) lateral roots originate. (D) the endodermis originates
Problem 6
- Root apical meristems are found (A) only in taproots. (B) only in lateral roots. (C) only in adventitious roots. (D) in all roots
Problem 7
Problem 8
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
Problem 9
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
- A strawberry plant mutant that fails to make stolons would suffer from (A) too little mineral absorption. (B) a tendency to topple over. (C) too little water absorption. (D) a reduction in asexual reproduction
Problem 10
