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BOTANY LAB > LEAVES > Flashcards

LEAVES Flashcards

1
Q

TWO MAIN PARTS OF THE LEAVES

A

BLADE AND PETIOLE

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2
Q

BLADE is also known as

A

LAMINA

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3
Q

the BROAD PORTION of the leaf consisting of the apex, margin, vein, midrib, and base.

A

BLADE / LAMINA

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4
Q

a THIN STALK that attaches the leaf to a stem.

A

PETIOLE

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5
Q

consist of a SINGLE BLADE

A

SIMPLE LEAVES

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6
Q

have a blade that is
SEPARATED INTO TWO OR MORE parts on a COMMON PETIOLE

A

COMPOUND LEAVES

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7
Q

– leaflets are attached DIRECTLY to the end of the petiole

A

PALMATELY COMPOUND

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8
Q

– leaflets are ARRANGED ON THE SIDES of the main leaf stalk

A

PINNATELY COMPOUND

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9
Q

LEAF SHAPE:
NARROW AND LONG with approximately PARALLEL SIDES

A

LINEAR

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10
Q

LEAF SHAPE:
LONGER THAN BROAD with nearly parallel sides
and with a ROUNDED BASE AND APEX

A

OBLONG

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11
Q

LEAF SHAPE:
WIDEST below and TAPERS TOWARD BOTH ENDS

A

LANCEOLATE

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12
Q

LEAF SHAPE:
the REVERSE of lanceolate, BROADEST ABOVE middle and TAPERING DOWNWARD

A

OBLANCEOLATE

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13
Q

LEAF SHAPE:
WEDGE-SHAPED, BROAD AT THE TIP and tapering by nearly straight lines to an ACUTE ANGLE AT THE BASE

A

CUNEATE

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14
Q

LEAF SHAPE:
BROADLY ROUNDED ABOVE and LONG AND NARROW BELOW

A

SPATULATE

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15
Q

LEAF SHAPE:
BROADEST PART BELOW THE MIDDLE; more or less narrow, narrowed toward the tip; EGG-SHAPED

A

OVATE

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16
Q

LEF SHAPE:
the BROADER PART ABOVE THE MIDDLE; the REVERSE OF OVATE

A

OBOVATE

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17
Q

LEAF SHAPE:
BROADEST AT THE MIDDLE tapering more or less EQUALLY TO THE BASE AND APEX

A

ELLIPTICAL

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18
Q

LEAF SHAPE:
DIAMOND-SHAPED, with EQUAL SIDES but
UNEQUAL ANGLES

A

RHOMBOID

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19
Q

LEAF SHAPE:
TRIANGULAR

A

DELTOID

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20
Q

LEAF SHAPE:
more or less CIRCULAR IN OUTLINE; FLAT

A

ORBICULAR

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21
Q

LEAF SHAPE:
KIDNEY SHAPED

A

RENIFORM

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22
Q

LEAF SHAPE:
HEART SHAPE

A

CORDATE

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23
Q

LEAF MARGIN:
EVEN LINE, WITHOUT TEETH, notches, or lobes

A

ENTIRE

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24
Q

LEAF MARGIN:
cut into SHARP, SAW-LIKE TEETH POINTING FORWARD

A

SERRATE

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25
Q

LEAF MARGIN:
margin of the leaf forms a WAVY LINE, BENDING SLIGHTLY INWARD and outward in succession

A

UNDULATE

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26
Q

LEAF MARGIN:
like undulate, the margin is VERY WAVY (sinuous)

A

SINUATE

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27
Q

LEAF MARGIN:
teeth are SHORT AND ROUNDED; also called SCALLOPED

A

CRENATE

28
Q

CRENATE margin is also called as

A

SCALLOPED

29
Q

LEAF MARGIN:
VERY FINELY NOTCHED with ROUNDED PROJECTIONS

A

CRENULATE

30
Q

LEAF MARGIN:
TEETH POINT OUTWARD

A

DENTATE

31
Q

LEAF MARGIN:
leaf having a FINELY TOOTHED MARGIN

A

DENTICULATE

32
Q

LEAF MARGIN:
COARSELY CRENATE, the teeth margins again crenated

A

DOUBLY CRENATE

33
Q

LEAF MARGINS:
COARSELY SERRATE, the teeth margins again serrated

A

DOUBLY SERRATE

34
Q

LEAF MARGIN:
COARSELY DENTATE, the teeth margins again dentated

A

DOUBLY DENTATE

35
Q

LEAF MARGIN:
INCISIONS DO NOT EXTEND DEEPER than halfway between the MARGIN AND THE CENTER OF THE BLADE are ROUNDED

A

LOBED

36
Q

LEAF BASES:
WEDGE-SHAPED, TAPERING evenly to a NARROW POINT

A

CUNEATE

37
Q

LEAF BASES:
HEART SHAPED

A

CORDATE

38
Q

LEAF BASES:
SLANTING, UNEQUAL-SIDED

A

OBLIQUE

39
Q

LEAF BASES:
PROLONGED APEX tapering to a long, narrow point

A

ACUMINATE

40
Q

LEAF BASES:
forming an ACUTE ANGLE of LESS THAN 90 degrees

A

ACUTE

41
Q

LEAF BASES:
BLUNT; the sides forming an ANGLE OF MORE THAN 90 DEGRESS

A

OBTUSE

42
Q

LEAF BASES:
forming an ARC

A

ROUNDED

43
Q

LEAF BASES:
ABRUPTLY CUT OFF transversely at the base

A

TRUNCATE

44
Q

LEAF BASES:
ARROW-SHAOED, the AURCILES turned INWARDS

A

SAGITTATE

45
Q

LEAF BASES:
HALBERD-SHAPED; lobes at base POINTED AND NARROW and nearly at RIGHT ANGLES to the petiole

A

HASTATE

46
Q

LEAF BASES:
SMALL PAIR OF PROJECTIONS, or EARS, usually at the base

A

AURICULATE

47
Q

LEAF APEX:
ABRUPTLY TIPPED with a small, SHORT POINT; like a MERE PROJECTION OF THE MIDRIB

A

MUCRONATE

48
Q

LEAF APEX:
tipped with an ELONGATED SHARP OR RIGID POINT

A

CUSPIDATE

49
Q

LEAF APEX:
with a ROUNDED SINUS at the tip

A

RETUSE

50
Q

LEAF APEX:
INDENTED or NOTCHED

A

EMARGINATE

51
Q

LEAF APEX:
a SQUARE END that looks cut off

A

TRUNCATE

52
Q

LEAF APEX:
- prolonged into a NARROWED OR TAPERING POINT

A

ACUMINATE

53
Q

LEAF APEX:
ending in an ACUTE ANGLE, but NOT A PROLONGED POINT

A

ACUTE

54
Q

LEAF APEX:
BLUNT or ROUNDED APEX

A

OBTUSE

55
Q

LEAF APEX:
BROAD and SEMI-CIRCULAR in outline

A

ROUNDED

56
Q

LEAF VENATION:
characteristic of the MONOCOTYLEDONS.

A

PARALLEL OR CLOSED

57
Q

Veins running nearly parallel to each other from base to apex and are connected by transverse veinlets

A

PARALLEL OR CLOSED

58
Q

LEAF VENATION:
characteristic of the DICOTYLEDONS.

A

NETTED OR OPEN

59
Q

Veins ANASTOMOSING
some of which are RUNNING OUT and END BLINDLY in the leaf tissue.

A

NETTED OR OPEN

60
Q

When THREE OR MORE SECONDARY VEINS branch radially from the base of the leaf.

A

PALMATELY VEINED

61
Q

When the secondary veins BRANCH OFF AT INTERVALS from a prominent midrib

A

PINNATELY VEINED

62
Q

When the secondary veins CURVE AND RUN ALMOST PARALLEL to the leaf margin for some distance

A

ARCUATE TYPE

63
Q

ARRANGEMENT OF LEAVES:
only ONE LEAF PER NODE, it is placed alternate on each side of the stem in a FLAT PLANE

A

ALTERNATE

64
Q

ARRANGEMENT OF LEAVES:
TWO LEAVES ARISE AT THE SAME POINT, with the leaves connecting opposite each other along the branch

A

OPPOSITE

65
Q

ARRANGEMENT OF LEAVES:
one leaf per node, but it is arranged in a spiral along the stem

A

SPIRAL

66
Q

ARRANGEMENT OF LEAVES:
THREE OR MORE LEAVES connected at a node

A

WHORLED

BOTANY LAB (12 decks)

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