Shared Flashcard Set

Details

Lecture 2
Twigs, Buds and Bark
16
Biology
Undergraduate 1
09/03/2010

Additional Biology Flashcards

 


 

Cards

Term
define leaf scar:
Definition
scar formed on a twig where a leaf abcisses (falls off)
Term
define bundle scar:
Definition
scars within the leaf scar that are left by the xylem and phloem
Term
describe the four types of buds:
Definition

lateral/axillary buds: the bud in the leaf axis that has a leaf scar under it

terminal buds: the bud at the end of the twig that lacks an associated leaf scar

pseudoterminal bud: a lateral bud that takes the place of an aborted terminal bud

accessory bud: extra bud associated with the lateral or terminal buds

Term

define this type of bud:

 

[image]

Definition
imbricate bud-the scales overlap like shingles
Term

define this type of bud:

 

[image]

Definition
clustered bud
Term

define this type of bud (in terms of the bud scales):

 

[image]

 

 

Definition
valvate bud
Term

what is this type of bud (in terms of the bud scales)?

 

[image]

Definition
a naked bud-no bud scales
Term
define pith:
Definition
a mass of cells in the center of a twig that is usually white, but can be brown, green, yellow, or pink, and can be circular, triangular, or round in shape
Term

define the composition of this pith:

 

[image]

Definition
continuous and homogenous
Term

define the consistency of this pith:

 

[image]

Definition
diaphragmed pith
Term

define the consistency of this pith:

 

[image]

Definition
chambered pith-black walnut
Term

define the white bumps on this twig:

 

[image]

Definition
lenticels-they allow gases to flow in and out of the plant
Term

name and define the feature on this twig:

 

[image]

Definition
prickles-an outgrowth of the epidermis that are easily dislodged (wild rose)
Term

name and describe the protective features on this twig:

 

[image]

Definition
spines-modified leaves or stipules that follow the arrangement of the leaves (Japanese barberry is an example)
Term

name and describe the protective features on this twig:

 

[image]

Definition
thorns-specialized shoots that have vascular bundles (hawthorn is an example)
Term
name some of the features of bark that are used to identify different tree species:
Definition

-thickness

-color

-texture

-fissure size

-ridge size

-patterns

Supporting users have an ad free experience!