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33 Cards in this Set
- Front
- Back
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These leaf-like structure are usually presented in pairs and can be found at the base of petiole. They are often attached at the node.
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stipule
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The rigid stalk that attaches a blade to stem is called the ______________. In some species, this structure is missing.
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petiole
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What type of venation does dicot leaves always have?
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net venation
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Monocot leaves always have ____________ venation.
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parallel
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The broad, flat, expanded portion of a leaf is called a ______________.
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blade
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_______________ are the tightly packed, elongated cells that are arranged between upper epidermis and the vascular bundles.
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Palisade mesophyll
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_________ are the lthin-wall cells in upper epidermis of monocots which shrink rapidly under water stress, thus, allowing the leaves to roll-up.
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Bulliform cells or motor cells
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The phyllotaxy of a plant with more than two leaves per node is called ____________. The leaves are often arranged in a circle.
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whorled
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Which two tissues can be found in the vascular bundles in leaves?
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Primary xylem and prinary phlorm
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During the day, stomata on leaves are ___________ (closed or opened) because water and potassium has ____________ (entered or left) the guard cells causing them to swell into kidney shape cells.
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opened, entered
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This meristematic tissue in monocot leaves produce new cells in the region of maturation, therefore, allowing the leaf to continue to elongate after the tip of the leaf is cut off.
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Intercalary meristem
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_____________ are epidermal hairs.
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Trichomes
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The phyllotaxy of a plant with two leaves per node (leaves arranged in pairs across from each other) is called _______________.
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opposite
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The angle between a leaf and the stem.
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Axil
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In leaves, the ground meristem matures into this tissue.
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Mesophyll
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Monocot leaves only have this type of mesophyll.
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spongy mesophyll
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Most of the photosynthesis on the leaves occurs in this tissue.
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Palisade mesophyll
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a blade that is subdivided into smaller units |
compound blade
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___________ is the broad base of a monocot blade that wraps around internode.
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sheath
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An impression on the stem left behind after the leaf falls off.
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Leaf scar
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The loss of water vapor from the stomata is called __________________.
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transpiration
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______________ is the loss of water, in the form liquid droplets, from the ____________ along the margin of the leaves.
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Guttation, hydathodes
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The phyllotaxy of a plant with leaves arranged singly in alternating pattern (one leaf per node) is called ____________.
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alternate
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Arrangement of viens in blade is called ________________.
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venation
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The tiny openings in the epidermis of leaves and young stems which are flanked by two guard cells are called ____________.
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stomata (plural)
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___________ are the small, sausage-shaped chlorenchyma cells occurring in pairs on the epidermis.
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guard cells
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In some monocot leaves, a collar of tissue that projects up from sheath is called the _______________.
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ligule
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what type of venation does a maple leaf have.
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palmately net veined
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The arrangement of leaves on a stem is called __________________.
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phyllotaxy
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___________ is a narrow band of immature cells at the base of dicot leaf petiole. Disintegration of the middle lamella in this area resulted in the separation of the leaves from plants.
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Abscission zone
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The embryonic leaves surrounding the apical meristem of the stem are called _____________________.
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leaf primordia
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in some monocot leaves a pair of projections down from the blade is callled
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auricles
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In dicot leaves, _______________ are the loosely packed, rounded chlorenchyma cells below the palisade mesophyll.
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spongy mesophyll
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