Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
14 Cards in this Set
- Front
- Back
define primary growth |
- comes from meristematic activity (stem tips and root tips) - plant growing taller - roots growing deeper |
|
define secondary growth |
- result from meristematic activity of the cambium - girth of the tree increases - 2 rings of xylem are produced each year (spring and summer growth) |
|
define 'stolon' |
an above ground horizontal stem. - shoots and roots are produced at the nodes. - strawberry, carpet bugle |
|
define 'rhizome' |
an underground horizontal stem. - rhizomes have scale leaves and buds. - roots and shoots are produced at the nodes - quack grass, canna lily |
|
define ' tuber' |
the thickened terminal part of an underground stem. - a potato * the eye of a potato is actually a bud |
|
define 'corms' |
a short, fleshy, underground stem - very compressed internodes - scaling leaves - Gladiolus |
|
define 'water storage' (think cactus) |
usually a thickened, turgid stem. *cactus leaves are reduced to needles |
|
define 'thorn' |
a stem modified to a point on the end. - hawthorn, firethorn, quince, russian olive |
|
define 'twining stem' |
usually a 'weak' stem that supports itself by twining around other plants or structures |
|
define 'sucker' |
modified stem that originates from below the soil surface from 'adventitious' buds on the roots. - raspberry |
|
vegetative buds develop into ... |
leaves and shoots |
|
floral buds develop into ... |
leaves and flowers |
|
mixed buds develop into ... |
leaves and flowers |
|
buds are usually only found at ... |
the stem tips and in the axils of angiosperm leaves |