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BOTAONE > LEAVES > Flashcards

LEAVES Flashcards

1
Q

Leaf morphology can be characterized based on:

A

Type of leaves
Venation
Phyllotaxy
Leaf shape
Base
Margin
Apex

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2
Q

Monocot Leaf ADAPTATIONS

A

Ligule
Auricle

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3
Q

collar extension of the sheath curving around the stem; membranous, hairy or absent

A

Auricle

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4
Q

appendage that surrounds the stem at the junction of the blade and sheath

A

Auricle

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5
Q

angle of the petiole

A

axil

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6
Q

the main axis of a compound structure. It can be the main stem of a compound leaf

A

rachis

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7
Q

a leaf-like part of a compound leaf

A

leaflet or foliole

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8
Q

dicot leaves that do not have petioles

A

sessile leaf

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9
Q

petioles that are attached to the middle of the blade;

A

Peltate leaves

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10
Q

sessile leaves that surround and are pierced by stems; e.g. include yellow-wort and thoroughwort

A

Perfoliate leaves

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11
Q

arrangement of veins

A

Venation

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12
Q

veins running parallel with one another (monocot)

A

Parallel venation

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13
Q

Netted types

A

Pinnately veined leaves
Palmately veined leaves

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14
Q

one primary vein (midvein) which is included within an enlarged midrib

A

Pinnately veined leaves

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15
Q

several primary veins fan out from the base of the blade

A

Palmately veined leaves-

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16
Q

Type of venation found in lower vascular plants. (E.g. Horsetail) One nerve is enough to sustain the blade.

A

Univernous

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17
Q

3 primary veins.

A

Ternate-netted

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18
Q

Always branching into two veins. (E.g. Gingko)

A

Dichotomous

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19
Q

Arrangement of leaves along the axis of the stem.

A

Phyllotaxy

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20
Q

Two leaves; in pairs. Oriented in one plane. In some species, can be oriented in different planes.

A

Oppositive leaves

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21
Q

Opposite leaves attached at right angles to the adjacent pairs of leaves, in one node.

A

Decussate

22
Q

Three or more leaves in the node

A

Whorled leaves

23
Q

One leaf per node, Spiral arrangement.

A

Alternate leaves

24
Q

Leaves are all originating from the stem. Circular arrangement of leaves or of structures resembling leaves.

A

Rosette

25
Q

To facilitate gas exchange between the inner parts of leaves, stems, and fruits, plants have a series of openings known as

A

stomata

26
Q

stomates only on the upper epidermis

A

Floating leaves

27
Q

NO stomates

A

Submerged leaves

28
Q

shape of upper epidermis

A

(Elongated cells)

29
Q

shape of lower epidermis have guard cells.

A

(spherical, loosely arranged)

30
Q

Upper (Elongated cells) and lower (spherical, loosely arranged) epidermis both have guard cells in dicots

A

true

31
Q

Layers of mesophyll in dicots

A

Palisade parenchyma: Upper epidermis Spongy parenchyna: Lower epidermis

32
Q

Vascular tissues in leaves

A

veins

33
Q

Flexible courtesy of the collenchyma tissues

A

Midrib

34
Q

Mesophyll layer is not well differentiated into palisade and spongy layers

A

monocot leaves

35
Q

contains bulliform cells

A

monocot leaves

36
Q

Depending on the environment, some species develop their own adaptations

A

true

37
Q

Desert plants adaptations

A

thick and reduced leaves
stomata opens only at night time
thick waxy layer

38
Q

Modified Leaves

A

cotyledons
tendrils
colored bracts
insect trapping
spines
storage leaves
absorptive leaf
reproductive leaf
leaf hooks
stipules
expanded petiole
flower pot leaves
expanded petiole

39
Q

First leaves produced by a germinating seed. Often contain a stored food to help the seedling become established. Contains some food reserves for stock-up of the seedling. Once the plant is well-established, it will shed off the _____.

A

cotyledons

40
Q

Blade of leaves or leaflets are reduced in size; allows plant to cling to other objects.

A

tendrils

41
Q

Petal-like leaves to attract pollinators.

A

colored bracts

42
Q

Possessed by certain plants that live under nutrient-poor conditions.

A

insect trapping

43
Q

Protection against herbivory. As blades, they do not have any surface for transpiration.

A

spines

44
Q

having large vacuoles to retain water in halophytes

A

storage leaves

45
Q

A lot of aquatic plants do not have a developed root system. Hydrilla adapted for their leaves to have the role of absorption underwater.

A

absorptive leaf

46
Q

leaves that produces a lot of buds for asexual reproduction

A

reproductive leaf

47
Q

help the plant crawl upward

A

leaf hooks

48
Q

photosynthetic leafy outgrow
They may range from quite leaf-like to small and inconspicuous structures. They are typically regarded as a component of a normal flowering plant’s anatomy.

A

stipules

49
Q

petiole that maximizes photosynthesis

A

expanded petiole

50
Q

will catch all the falling leaves and falling plant debris from the canopy.

Will also retain water used to decay with the decayed plant debris which will provide the plant the nutrients it needs to survive.

A

flower pot leaves

BOTAONE (12 decks)

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