24 terms

Life Science - Chapter 10 Vocabulary

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kingdom Plantae
organisms in this kingdom are producers. They are eukaryotic and multicellular. They have organized tissues, plastids, and they have cell walls containing cellulose
botany
The study of plants
node
A region on a stem where a leaf is or was attached.
taproot system
A root system having one or a few main roots that are thicker and longer than the other roots of the plant.
fibrous root system
A root system having a cluster of roots that are about equal in size and lacking a taproot.
woody stem
A hard, non-flexible plant stem.
herbaceous stem
A soft, flexible, and often green plant stem.
vein
A structure containing vascular tissues in leaf blades.
xylem
A vascular tissue made of long, hollow cells that carry water and dissolved minerals upward in a plant.
phloem
A vascular tissue that carries dissolved food in a plant.
vascular bundle
A strand of vascular tissue (xylem and phloem) in leaves, non-woody stems, and young plants.
fiber
A long, think-walled cell hat supports a plant.
epidermis
A tissue that serves as a protective covering in plants.
stomata
Openings between guard cells of a leaf that permit water vapor and gases to pass into and out of the leaf.
guard cell
One of the cells that surround a stoma on a plant leaf and control the opening and closing of the stoma.
transpiration
The release of water from plant leaves through stomata.
palisade layer
The upper layer of leaf tissue that consists of tall, thin, closely packed cells that carry on the majority of photosynthesis.
spongy layer
The lower layer of leaf tissue consisting of loosely packed cells that carry on photosynthesis and have many air spaces between them.
hormone
A chemical produced by living cells that is transported to other body tissues where it causes a specific effect.
tropism
The growth of plants in response to external stimuli such as light (phototropism), gravity (gravitropism). and touch (thigmotropism).
phototropism
The growth and movement of a plant part in response to light.
thigmotropism
The growth and movement of a plant part in response to touch.
gravitropism
The growth and movement of a plant part in response to gravity.
photoperiodism
The response of a plant to changes in the length of light and dark periods.