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BOTANY > CHAPTER 25 > Flashcards

CHAPTER 25 Flashcards

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0
Q

A leaf matures from

A

A leaf primordium

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1
Q

Leaf is

A

A photosynthetic plant organ

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2
Q

Stipules are

A

Appendages at the base of the leaves on some plants

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3
Q

Nodes are

A

Region of attachment of a leaf to a stem

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4
Q

An Internode is

A

The region between nodes

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5
Q

Leaf axil is

A

The angle formed by the stem and the leaf

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6
Q

Axil lattice lateral buds occur

A

At each node just above the leaf or leaf scar

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7
Q

Shoot apex/tip or stem tip is

A

The active growing region at the tip of each stem

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8
Q

Shoot apex/tip or stem tip is composed of

A

Apical meristem, lead primordia, bud primordia, and internodes

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9
Q

Leaf scar is formed to

A

Seal off the stem

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10
Q

Leaf scar is located at

A

A node

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11
Q

Vascular bundle scar tissue is produced to

A

Seal off a vascular bundle

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12
Q

Vascular bundle scar is found

A

Inside a leaf scar

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13
Q

Terminal bud is

A

A bud at the tip of each stem or branch

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14
Q

Terminal bud contains and protects a

A

Dormant shoot apex

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15
Q

A bud scale is usually

A

A hardened reduced lead

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16
Q

A bud scale protects a

A

Shoot tip during dormancy

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17
Q

Terminal bud scale scars are

A

Scar tissue formed by each bud scale before it is dropped

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18
Q

Lenticels are

A

Tears in the periderm

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19
Q

Lenticels permit

A

Gas exchange in the stem

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20
Q

Stem morphology in monocots

A

Usually unbranched, usually no axillary or terminal buds, nodes usually swollen, no true secondary growth

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21
Q

Stem morphology in dicots

A

Usually branched, axillary and terminal buds present, nodes usually NOT swollen, may have secondary growth

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22
Q

The shoot tip is found

A

Inside terminal buds, inside axillary or lateral buds, at ends of growing branches

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23
Q

Shoot tip produces

A

New stems, leave and flowers

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24
Primary meristem gives rise to what 3 primary meristematic tissues?
Protoderm, ground meristem, and procambium
25
As you move downward on a shoot tip the tissue gets?
Older
26
DICOT stem anatomy
Epidermis > Cortex > vascular bundles > pith
27
DICOT vascular bundle
Phloem fiber cap, fiber cap, vascular bundle cap or sclerenchyma fibers. Primary phloem Vascular cambium(if present) Primary xylem
28
MONOCOT stem anatomy
Epidermis > ground tissue > vascular bundles
29
MONOCOT vascular bundles
Sclerenchymatous bundle sheath, primary phloem, primary xylem, xylem lacuna
30
Xylem lacuna is a
Hole in the xylem created as the stem grows
31
Xylem vessels are _____ at maturity so they can not elongate
Dead
32
Adjacent xylem parenchyma cells are ____ so they can elongate
Living
33
DICOT stem anatomy | Vascular bundles are arranged in a
Ring
34
DICOT stem anatomy | Has a distinct ___ and ____
Pith and cortex
35
MONOCOT stem anatomy | Vascular bundles are ____
Scattered
36
MONOCOT stem anatomy | There is no distinct ____ and ____
Pith and cortex
37
DICOT stem anatomy | ___vascular cambium
May have
38
MONOCOT stem anatomy | ____ vascular cambium
NO
39
Rhizome is a
Horizontal underground stem
40
A tuber is a
Short, thickened branch of underground rhizome that has nodes and buds
41
Cladophyll is
A stem with the form and function of a leaf
42
Bulb is a
Short thick underground stem that has fleshy leaves
43
A stolon or runner
An elongate, horizontal, above ground stem
44
A corm is
Short, solid, thickened underground stem
45
Tendril is
A modified stem or leaf shaped as a thread like process that twists as to grab an object for support
46
Thorn is a
Stiff, woody, modified stem with a sharp point
47
A spine is
A sharp, stiff projection
48
Prickle is a
Spine like outgrowth of the epidermis or bark
49
A leaf is divided into two parts
Blade and petiole
50
A blade is
The expanded photosynthetic part of a leaf
51
The petiole is
The stalk that connects the blade to the stem
52
Alternate leaves have ___ leaf per node
ONE
53
Opposite have ____ leaves per node
TWO
54
Whorled have _______ leaves per node
Three or more
55
For a simple leaf the
Blade is not subdivided into discrete subunits
56
For a compound lead
The blade is subdivided into discrete subunits called leaflets
57
There are two types of compound leaf
pinnately compound and palmately compound
58
Leaflets do not have ___
Axillary buds
59
Pinnately compound
Leaflets arise singly or in pairs; similar to a feather
60
Palmately compound
All leaflets arise from a common point ;similar to fingers from a palm
61
_____is the arrangement of the veins in a leaf or leaflet
Venation
62
There are three basic types of venation
Pinnate venation, palmate venation, and parallel venation
63
A single primary vein or midrib runs up through the center of the leaf or leaflet with all secondary veins branching off the primary vein
Pinnate venation
64
More than one primary vein arises from a common point at the base of the leaf blade
Palmate venation
65
Secondary veins run parallel to the primary vein or midrib
Parallel venation
66
A pair of appendages at the base of a leaf are
Stipules
67
Sun Leaf has
2 layers of palisade tissue Fewer, larger veins Smaller surface area Thicker cuticle
68
Shade leaf
1 layer of palisade tissue More,smaller veins Larger surface area Thinner cuticle
69
A reduced often hardened leaf that protects a shoot apex
Bud scale
70
A modified leave that subtends a flower or inflorescence
Bract
71
A modified stamp or leaf shaped as a threadlike process that twists so as to grab an object for support
Tendril
72
What are the 4 whorls to a flower?
Sepal Petal Stamen Pistil
73
A calyx is
Term for all the sepals of a flower
74
____ protect flower when in bud
Sepals
75
Corolla is a
Term for all the petals of a flower
76
____ are the attractive units of the flower
Petals
77
Term for petals and sepals that look alike
Tepals
78
Androecium is the
Term for all the stamens of a flower
79
Androecium produce the
Male gamete--- pollen grain
80
Gynoecium is the
Term for all the pistils of a flower
81
____ composed of the stigma, style and ovary
Gynoecium

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