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25 Cards in this Set
- Front
- Back
The innermost layer of the root cortex, which is a selectively permeable barrier that helps control the movement of water and dissolved minerals, is called the |
endodermis |
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Plant cells called _____ are a type of ground tissue that often develop thick secondary walls that become heavily lignified and are dead when mature. |
sclerenchyma *Secondary Sclerenchyma |
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Girdling a tree is eventually lethal because it prevents |
sugar transport to roots |
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Which of the following is NOT typically found in primary plant cell walls? |
lignin |
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Sieve tube members are part of the |
phloem |
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Which of the following can waterproof cell walls, allowing for structures such as watertight conduction channels? |
lignin |
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Among other functions, the ______ of a vascular plant performs most of the photosynthesis that is conducted by the plant. |
ground tissue |
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Cells called ______ are a type of vascular tissue that join end to end in tubelike columns. They develop thick, lignified cell walls and die at maturity, leaving a water-conducting tube. At maturity the ends of the cells are open or have large openings, allowing for enhanced water flow compared to other types of vascular tissue. |
vessel members |
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Which of the following is true of typical plant development? |
Growing tips and zones are present throughout a plant's life, and plant bodies do not have a fixed final size |
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Specialized outgrowths of the plant epidermis called ______ are hairlike projections, such as root hairs. |
trichomes |
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Plant cells called _____ make up the bulk of the soft primary growth of roots, stems, leaves, flowers, and fruits. |
parenchyma |
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In the internal leaf structure shown, the item labeled "2" is |
palisade mesophyll |
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In the diagram of a root tip shown, the item labeled "2" is the |
zone of cell division |
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Which of the following most directly gives rise to primary vascular tissues? |
procambium |
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Companion cells are connected via plasmodesmata to |
sieve tube members |
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Which of the following represents the correct order of structures from outside to inside for a stem that has a vascular cylinder? |
epidermis, cortex, stele, pith *Excuse Carla, She's Picky |
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Starting from the outside and moving in toward the center, which gives the correct order of tissues in the stem of a young tree? |
primary phloem, secondary phloem, secondary xylem, primary xylem |
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Cork cambium produces |
secondary epidermis |
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Growth from apical meristems, generally resulting in an increase in length of a plant, is referred to as |
primary growth |
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Plant cells called ______ form flexible support strands such as the "strings" in celery |
collenchyma |
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Cells called ______ are a type of vascular tissue with long, tapered, overlapping ends. They develop thick, lignified cell walls and die at maturity, leaving a water conducting tube with pits at the tapered ends that allow for lateral water transport between cells. |
tracheids *think trenches |
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The upper angle between a stem and attached leaf is called a(n) |
axil |
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When an apical meristem cell divides, one daughter cell is called the initial and the other is called the derivative. What are the fates of these cells? |
the initial remains part of the apical meristem, and the derivative is used to form primary meristems |
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In response to increased carbon dioxide levels in the atmosphere, stomata in leaves of some species have _______. |
declined in number |
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Which of the following is NOT typically a main function of stems? |
energy capture |