Pbot111Lec - Stems Part 3

Front 1

Cotyledon stem whose vascular bundle is organized in the form of a ring.

Back 1

Dicot stem

Front 2

Cotyledon stem whose vascular bundle is arranged in complex distribution

Back 2

Monocot stem

Front 3

Stems of both dicots and monocots have epidermis, cortex, and collateral vascular bundle.

Back 3

True.

Front 4

Wood formed during spring

Back 4

Spring wood

Front 5

Wood formed during summer, counting the total number of annual ring is directly proportional to the age of the wood

Back 5

Summer wood

Front 6

The study of the growth rings in wood

Back 6

Dendrochronology

Front 7

The oldest tree in existence

Back 7

The great basin bristlecone pine

Front 8

Scientific name of bristlecone pine

Back 8

Pinus longaeva

Front 9

Group of tissues that enter tissue composition of old dicot stem and is derived from vascular cambium. It consists of secondary xylem and phloem, replacing primary vascular tissues and forming wood

Back 9

Secondary vascular tissues

Front 10

It consists of phellem, phellogen, and phelloderm

Back 10

Periderm

Front 11

It is the cork

Back 11

Phellem

Front 12

It is the cork cambium

Back 12

Phellogen

Front 13

It is the secondary parenchyma

Back 13

Phelloderm

Front 14

The two distinct regions of woody stem

Back 14

Bark

Wood

Front 15

The central region of secondary wood in old trees filled with tannin and other substances. It is physiologically inactive in most plants. It’s also dark in color because of the presence of tannins, oils, gums, and resins. It also functions as mechanical support

Back 15

Heartwood

Front 16

Complex organic substance present in plants that generally have astringent properties and can also be used in the leather industry

Back 16

Tannins

Front 17

Plant exudates reduced as a result of stress or injury into the plant

Back 17

resins and gums

Front 18

It is the outer region of secondary wood and is lighter in color. It’s physiologically active and is used to transport minerals and water from roots to leaves

Back 18

Sapwood

Front 19

Enumerate the Main Functions of stems

Back 19

Mechanical support for leaves and other plant organs

Transport of water and solutes

Produces new living tissues

Stems support a display of leaves

Stems support a display of flowers

Front 20

Example of stem that supports a display of flowers

Back 20

Redbud

Front 21

Redbud

Back 21

Cercis canadensis

Front 22

Enumerate the five modified or specialized functions of stems

Back 22

Unusual method of support

Reproduction

Protection

Absorption of water and mineral salts

Photosynthesis

Storage

Front 23

Slender, whip-like, or thread-like strand where a vine or other plants can climb

Back 23

Tendrils

Front 24

Bitter gourd

Back 24

Momordica charantia

Front 25

Squash

Back 25

Cucurbita maxima

Front 26

Plants that climb by its adventitious roots

Back 26

Root climbers

Front 27

Creeping Ivy

Back 27

Glechoma hederacea

Front 28

Climbing plants which wind themselves around and support like ropes

Back 28

Twiners

Front 29

Balloon Vine

Back 29

Cardiospermum halicacabum

Front 30

Development of buds in some parts of the stem

Back 30

Reproduction

Front 31

Ginger

Back 31

Zingiber officinale

Front 32

Potato

Back 32

Solanum tuberosum

Front 33

Gabi

Back 33

Colocasia esculenta

Front 34

Stems are modified into thorns and spines

Back 34

Protection

Front 35

Bougainvillea

Back 35

Bougainvillea spectabilis

Front 36

Rose

Back 36

Rosa rubiginosa

Front 37

Calamansi

Back 37

Citrus microcarpa

Front 38

Presence of uncutinized epidermis

Back 38

Absorption of water and mineral salts

Front 39

Digman

Back 39

Hydrilla verticillate

Front 40

Phyllocades

Back 40

Photosynthesis

Front 41

Prickly Pear

Back 41

Opuntia

Front 42

It is under vegetative propagation where stem cuttings are placed in moist sand or pear mass until adventitious root develop

Back 42

Rooting

Front 43

Under vegetative propagation where freshly cut surfaces of two stems are bound together firmly so that two cambial layers are at least in partial contact

Back 43

Grafting

Front 44

Three Purposes of grafting

Back 44

Propagates heedless variety of plant

Ensure more rapid fruiting

To check or eliminate parasites

Front 45

The removal of a diseased, broken, or otherwise undesired branch

Back 45

Pruning

Front 46

Removal of complete ring of the bark to sharp the downward passage of food

Back 46

Girdling

Front 47

Three purposes of girdling

Back 47

Produce starch roots

Produce more flowers in the season

To kill trees

Front 48

Attempt to enumerate the nine economic importances of stems

Back 48

Source of lumber, wood pulp, and fibers for linen and rope

Bark of the cork oak is used for stoppers

Quinine used for treating Malaria

Source of rubber

Food source

Cinnamon from the bark of Cinnamonium is used as a food flavoring

Tars and wood alcohol are distilled from hardwood trees like oak and hickory

Resins and turpentines are obtained from softwood trees like yellow pine

From willow bark to aspirin

Front 49

It is the bark where Quinine came from

Back 49

Cinchona bark

Front 50

It is the disease the causes malaria

Back 50

Plasmodium disease

Front 51

It is also known as methanol

Back 51

Wood alcohol

Front 52

It is also known as grain alcohol

Back 52

Ethanol

Front 53

Where did salicin come from?

Back 53

Willow tree

Front 54

What bark did aspirin come from?

Back 54

Willow bark

Front 55

What is the drug classification of aspirin?

Back 55

NSAID (Non-steroidal Anti-inflammatory Drug)