The ability of a sunflower plant to become taller is directly due to itsa. apical meristem. c. mesophyll cells.b. lateral meristems. d. petiole.
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The ability of a sunflower plant to become taller is directly due to its
a. apical meristem. c. mesophyll cells.
b. lateral meristems. d. petiole.
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- The ability of a sunflower plant to become taller is directly due to its a. apical meristem. c. mesophyll cells. b. lateral meristems. d. taproot system.Which of the following is false? a. Stems have vascular bundles, and roots have vascular cylinders. b. Lateral roots can arise from nodes on a root. c. Primary growth (lengthening) can occur at an axillary bud. d. Apical meristem gives rise to epidermal tissue, ground tissue, and vascular tissue. e. Wood is xylem that forms during secondary growthWhich of the following causes increase in the diameter of a stem?a. Increase in size of cells in enlargement region.b. Secondary xylem produced by the vascular cambium.c. Secondary phloem produced by the vascular cambium.d. All of the above.
- A monocot stem differs from a eudicot stem in that, in the monocot stem,a. xylem and phloem are in a ring surrounding the pith.b. xylem and phloem are in bundles scattered throughout the stem.c. there is an organized cortex and pith.d. xylem forms a star in the center, with phloem between the points of the star.e. the epidermis does not have a waxy cuticle covering it.Between the bark and the wood in a woody stem, there is a layer ofmeristem calleda. cork cambium.b. vascular cambium.c. apical meristem.d. the zone of cell division.e. procambium preceding barkA difference between monocot and dicot plant stems is thea. absence of buds in monocots.b. organization of vascular tissue.c. presence of guard cells.d. absence of stomata.
- Which of the following statements is NOT true of the stems of vascular plants? a. Stems are composed of repeating segments, including nodes and internodes. b. Primary growth only occurs at the shoot apical meristem. c. Vascular tissues may be arranged on the outside of the stem or scattered throughout the stem. d. Stems can contain stomata.Which of the following statements is incorrect? a. Vascular bundles are arranged in a ring in the outer parts of monocot stems in whereas in eudicots they are scattered throughout the stem. b. The cuticle is a hydrophobic layer that covers the aerial part of plants c. Vascular bundle arrangement is different in stem and root. d. The epidermis and periderm form the dermal tissue of plants.Roots differ from stems because roots lack a. vessel elements. b. nodes. c. an epidermis. d. ground tissue.
- Which of the following statements about primary growth and secondary growth is/are true? A. Primary growth originates at the root apical meristem and shoot apical meristem. B. Secondary growth originates at the cork cambium and vascular cambium. C. Primary growth adds to the length of the plant. D. Secondary growth adds to the width of the plant. E. All of the above F. C and DChoose the incorrect statement: a. Fusiform and ray initials are formed by the vascular cambium. b. The cork cambium produces the periderm layer, a thicker tougher outer layer that replaces the epidermis. c. Wood is composed of secondary xylem. d. The vascular cambium separates the xylem on the outside of the stem and the phloem on the inside.Which of the following statements is incorrect? a. Stomata open when K ions move out of guard cells. b. Tracheids but not usually xylem vessel elements are found in both gymnosperms and angiosperms. c. Loss of water is regulated by control of stomatal closure. d. Phloem sieve vessel function is supported by companion cells.