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BOT 308 > Lab 1 terms > Flashcards

Lab 1 terms Flashcards

1
Q

abaxial=

A

facing away from the stem of a plant (in particular the lower surface of a leaf)

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2
Q

acaulescent=

A

has no stem (appears to have none)

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3
Q

Accessory buds=

A

a bud growing near and in addition to a normal axillary bud

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4
Q

adaxial=

A

the side of an organ facing towards the axis
ie. morphologically upper surface of a leaf

  • opposite of abaxial and same as dorsal
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5
Q

adventitious buds

A

the formation of a plant organ in an unusual place
- bud arises in not a normal position
- lacks a vascular trace

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6
Q

adventitious roots

A

roots thar form from any non-root tissue
- produced during normal development or in response to flooding, etc (stress)

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7
Q

alternate-leafed plants

A

the leaves are single at each node and borne along the stem alternately in an ascending spiral

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8
Q

arborescent=

A

resembling a tree in growth or appearance

eg. arborescent ferns = would look like trees

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9
Q

inflorescence=

A

the complete flower head of a plant including stems, stalks, bracts, and flowers

the process of flowering

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10
Q

axillary inflorescence=

A

an inflorescence that arises from a leaf axil

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11
Q

blade=

A

the leaf of a plant, especially grass

= the flat or expanded portion of a leaf

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12
Q

bract=

A

a modified or specialized leaf
- associated with a reproductive structure such as a flower, inflorescence axis, or cone scale

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13
Q

bud=

A

small lateral or terminal protuberance on the stem of a vascular plant that may develop into a flower, leaf, or shoot

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14
Q

buds arise from ____ tissue

A

meristem

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15
Q

caulescent

A

having a well-developed stem above ground; with a trunk

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16
Q

cladode

A

shoot systems in which leaves do not develop; rather, the stems become flattened and assume the photosynthetic functions of a plant

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17
Q

cladophyll

A

a flattened, leaf-like photosynthetic stem not bearing leaves or scales

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18
Q

T/F
cladode = cladophyll

give an example

A

true

asparagus

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19
Q

crown=

A

the total of an individual’s plant parts above ground

  • leaves, stems, reproductive structures
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20
Q

decumbent

A

(of stems, branches)

= lying or trailing on the ground with the extremity tending to ascend

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21
Q

determinate

A

Determinant plants have a growth pattern where the main stem ends in a flower cluster, and once this cluster has produced fruit, the plant stops growing.

22
Q

distal=

A

positioned at the end away from the point of attachment

23
Q

frutescent

A

having the appearance of a shrub
(shrubby/ shrublike)

24
Q

herbaceous plants

A

plants with flexible, green stems with few or no woody parts

25
Q

indeterminate growth=

A

growth that is not terminated (in contrast to determinate growth)

  • eg vines
26
Q

lateral buds

A

ie axillary bud

= an embryonic or organogenic shoot located in the axil of a leaf

27
Q

axil of a leaf=

A

the angle between a branch of leaf and the axis from which it arises

28
Q

leaf scar=

A

the mark left by a leaf after it falls off the twig
- marks the site where the petiole attached to the stem
- typically found below a branch

29
Q

leaflet=

A

a leaf-like part of a compound leaf
- resembles an entire leaf, but is not borne on a main plant stem, but on a petiole or a branch of the leaf

30
Q

lenticel=

A

a porous tissue comprising cells with huge intercellular spaces

  • gases are exchanged!
31
Q

monopodium

A

the main axis of growth (eg stem/ trunk of a tree)

32
Q

opposite- leaved plants

A

the leaves are paired at a node and borne opposite to each other

33
Q

whorled leaves=

A

when there are three or more equally spaced leaves at a node

34
Q

petiole

A

the stalk at the base of the leaf blade, attaching and supporting the leaf blade to the stem

35
Q

plagiotropic

A

= growing at an oblique or almost horizontal angle

36
Q

prickle=

A

a hard, pointed outgrowth from the surface of a plant, involving several layers of cells but not containing a vein
- outgrowth of the epidermis
- roses have prickles

37
Q

prostrate

A

= a woody plant with branches spreading along the ground of lying flat on the ground
or
spreading along the ground for most of its length but with tips turning upwards

38
Q

proximal

A

near to the place of attachment

opposite of distal

39
Q

pulvinus

A

a swollen leaf base composed of tissues that conduct water surrounded by a layer of motor cells

  • bends when pressure is applied
40
Q

rachis

A

a stem of a plant, especially a grass, bearing flower stalks at short intervals

41
Q

reticulate

A

net-like formation of veins, fibers, or lines that crosses something

eg. a reticulate lead could have a pattern of veins that resembles a net

42
Q

rosette

A

a circular arrangement of leaves (or structures resembling leaves)

  • usually sit near the soil in flowering plants
43
Q

runner

A

ie stolon

a slender stem that grows horizontally along the ground, giving rise to roots and vertical branches at nodes

44
Q

spine

A

= a firm, slender, sharp-pointed structure, representing a modified leaf or stipule

45
Q

stipules=

A

a pair of small, leaf-like appendages borne at the base of the petiole in many plants

46
Q

stolon

A

same as runner

47
Q

striate

A

a fine line, ridge, groove, or streaks of color

(striations)

48
Q

sympodium

A

ie sympode or pseudaxis

the primary shoot, comprising the stronger branches, formed during sympodial growth

branching along stems or hyphae

49
Q

tendril=

A

a plant organ specialized to anchor and support vining stems

  • may be modified leaves, leaflets, or leaf stipules derived as modified stem branches
50
Q

tessellate

A

a checkered pattern on a flower petal, tree bark, fruit, etc

51
Q

virgate

A

plants with wand-shaped erect branches or stems

ie long, slender twigs (produces many weak branches)

52
Q
A

BOT 308 (1 decks)

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