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Dermal tissue

outer covering or "skin" of a plant

ground tissue

tissue between the dermal tissue and vascular tissue of a non-woody plant that functions in photosynthesis, storage, and support

epidermis

the outer layer of the skin covering the exterior body surface of vertebrates

cork

a small float usually made of cork

sieve tube

tube formed by cells joined end-to-end through which nutrients flow in flowering plants and brown algae

cortex

the layer of unmyelinated neurons (the gray matter) forming the cortex of the cerebrum

root hair

thin hairlike outgrowth of an epidermal cell just behind the tip

root cap

thimble-shaped mass of cells covering and protecting the growing tip of a root

vascular bundle

a unit strand of the vascular system in stems and leaves of higher plants consisting essentially of xylem and phloem

pith

the choicest or most essential or most vital part of some idea or experience

cuticle

hard outer covering or case of certain organisms such as arthropods and turtles

stomata

the small openings on the undersides of most leaves through which oxygen and carbon dioxide can move

xylem

the woody part of plants: the supporting and water-conducting tissue, consisting primarily of tracheids and vessels

phloem

(botany) tissue that conducts synthesized food substances (e.g., from leaves) to parts where needed

taproot

something that provides an important central source for growth or development

fibrous root

part of a root system in which roots branch to such an extent that no single root grows larger than the rest

adventitious root

root growing in an unusual location e.g. from a stem

legumes

vegetables

dicot

flowering plant with two cotyledons

monocot

a monocotyledonous flowering plant

endosperm

nutritive tissue surrounding the embryo within seeds of flowering plants

mesophyll

The ground tissue of a leaf, sandwiched between the upper and lower epidermis and specialized for photosynthesis.

transpiration

the emission of water vapor from the leaves of plants

apical meristem

Embryonic plant tissue in the tips of roots and in the buds of shoots that supplies cells for the plant to grow in length.

seed germination

a process by which a seed embryo develops into a seedling

gymnosperms

seed plant that bears its seeds directly on the surfaces of cones

angiosperms

flowering plants

anther

the part of the stamen that contains pollen

stamen

the male reproductive organ of a flower

pistil

the female ovule-bearing part of a flower composed of ovary and style and stigma

pollination

transfer of pollen from the anther to the stigma of a plant

stigma

a skin lesion that is a diagnostic sign of some disease

gametophyte

the gamete-producing individual or phase in the life cycle of a plant having alternation of generations

sporophyte

the spore-producing individual or phase in the life cycle of a plant having alternation of generations

tropism

an involuntary orienting response

source

anything (a person or animal or plant or substance) in which an infectious agent normally lives and multiplies

sink

a covered cistern

translocation

the transport of dissolved material within a plant

gibberlins

promote stem lengthening, helps buds and seeds break dormancy and influence flowering (active in spring)

abscisic acid

plant hormone that inhibits cell division in buds and vascular cambium

auxin

a plant hormone that promotes root formation and bud growth

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