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Botany Terms | BIOL 3336 - Botany, Quizzes of Biology

Main terms from the semester Class: BIOL 3336 - Botany; Subject: Biology - SEM; University: LaGrange College; Term: Fall 2009;

Typology: Quizzes

Pre 2010

Uploaded on 12/08/2009

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TERM 1
monocot
DEFINITION 1
Monocotyledons or monocots are one of two major groups of
flowering plants (angiosperms) that are traditionally
recognized, the other being dicotyledons or dicots.
TERM 2
dicots
DEFINITION 2
Dicotyledons, or "dicots", is a name for a group of flowering
plants whose seed typically has two embryonic leaves or
cotyledons.
TERM 3
photosynthesis
DEFINITION 3
is a process that converts carbon dioxide into organic
compounds, especially sugars, using the energy from
sunlight.
TERM 4
plant
DEFINITION 4
Plants are living organisms belonging to the kingdom
Plantae.
TERM 5
spore
DEFINITION 5
is a reproductive structure that is adapted for dispersal and
surviving for extended periods of time in unfavorable
conditions.
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monocot

Monocotyledons or monocots are one of two major groups of flowering plants (angiosperms) that are traditionally recognized, the other being dicotyledons or dicots. TERM 2

dicots

DEFINITION 2 Dicotyledons, or "dicots", is a name for a group of flowering plants whose seed typically has two embryonic leaves or cotyledons. TERM 3

photosynthesis

DEFINITION 3 is a process that converts carbon dioxide into organic compounds, especially sugars, using the energy from sunlight. TERM 4

plant

DEFINITION 4 Plants are living organisms belonging to the kingdom Plantae. TERM 5

spore

DEFINITION 5 is a reproductive structure that is adapted for dispersal and surviving for extended periods of time in unfavorable conditions.

chlorophyll

Chlorophyll is a green pigment found in most plants, algae, and cyanobacteria. the green coloring matter of leaves and plants, essential to the production of carbohydrates by photosynthesis, and occurring in a bluish-black form TERM 7

cellulose

DEFINITION 7 Cellulose is an organic compound with the formula , a polysaccharide consisting of a linear chain of several hundred to over ten thousand (14) linked D-glucose units. TERM 8

shoot system

DEFINITION 8 Shoots are new plant growth, they can include stems, flowering stems with flower buds, leaves. The SAM creates the tissues of both the stem and the leaves. The major unit of development is the node Height is added by expansion of the internode TERM 9

root system

DEFINITION 9 RAM creates new cells mainly above Those new cells elongate behind the RAM, pushing it deeper into the ground After elongating, the new cells differentiate into cells that provide the basic root functions TERM 10

meristem

DEFINITION 10 A meristem is the tissue in all plants consisting of undifferentiated cells (meristematic cells) and found in zones of the plant where growth can take place.

cell wall

A cell wall is a tough, usually flexible but sometimes fairly rigid layer that surrounds some types of cells, is made up mostly of cellulose TERM 17

vacuole

DEFINITION 17 A vacuole is a membrane organelle which is present in all plant and fungal cells and occupies a large part of the cell's volume and is filled with a liquid called cell sap. The cell sap stores food reserves, pigments, defensive toxins, and waste products to be expelled or broken down. TERM 18

node

DEFINITION 18 A point on a stem where a leaf is or has been attached TERM 19

vascular bundle

DEFINITION 19 a longitudinal arrangement of strands of xylem and phloem, and sometimes cambium, that forms the fluid-conducting channels of vascular tissue in the rhizomes, stems, and leaf veins of vascular plants, the arrangement varying with the type of plant. TERM 20

cambium

DEFINITION 20 tissue in the stems and roots of many seed-bearing plants, consisting of cells that divide rapidly to form new layers of tissue. vascular cambium forms tissues that carry water and nutrients throughout the plant. phelom on the outside, and xylem on the ouside cork cambium creates cells that eventually become bark on the outside (secondary growth)

Bud

small swelling on a branch or stem, containing an undeveloped shoot, leaf, or flower TERM 22

leaf blade

DEFINITION 22 the broad portion of a leaf as distinct from the petiole TERM 23

compound leaf

DEFINITION 23 a leaf composed of a number of leaflets on a common stalk, arranged either palmately, as the fingers of a hand, or pinnately, as the leaflets of a fern; the leaflets themselves may be compound. TERM 24

petiole

DEFINITION 24 the slender stalk by which a leaf is attached to the stem; leafstalk. TERM 25

bundle sheath

DEFINITION 25 layer or region of compactly arranged cells surrounding a vascular bundle in a plant. The bundle sheaths regulate the movement of substances between the vascular tissue and the parenchyma and, in leaves, protect the vascular tissue from exposure to air.

root hairs

Root hair cells, the rhizoids of many vascular plants, are tubular outgrowths of trichoblasts, the hair-forming cells on the epidermis of a plant root. TERM 32

pericycle

DEFINITION 32 The pericycle is a cylinder of parenchyma cells that lies just inside the endodermis and is the outer most part of the stele of plants. TERM 33

glucose

DEFINITION 33 Glucose (Glc), a monosaccharide (or simple sugar) a product of photosynthesis, mostly incorporated into the disaccharide sugar sucrose rather than circulating free in the plant TERM 34

phosphorylation

DEFINITION 34 Phosphorylation is the addition of a phosphate (PO4) group to a protein or other organic molecule, ATP is formed during cell respiration from ADP by phosphorylation, as (oxidative phosphorylation) and the chloroplasts of plant cells TERM 35

oxidation

DEFINITION 35 chemical reaction in which an atom or ion loses electrons

respiration

process by which organisms exchange gases, especially oxygen and carbon dioxide, with the environmentoccurs in photosynthesis TERM 37

glycolysis

DEFINITION 37 is the metabolic pathway that converts glucose, C6H12O6, into pyruvate, C3H3O3-. TERM 38

kreb's cycle

DEFINITION 38 The citric acid cycle - also known as the tricarboxylic acid cycle (TCA cycle), the Krebs cycle, is a series of enzyme- catalysed chemical reactions, which is of central importance in all living cells that use oxygen as part of cellular respiration. TERM 39

alcoholic fermentation

DEFINITION 39 Ethanol fermentation, also referred to as alcoholic fermentation, is a biological process in which sugars such as glucose, fructose, and sucrose are converted into cellular energy and thereby produce ethanol and carbon dioxide as metabolic waste products. TERM 40

electron transport chain

DEFINITION 40 An electron transport chain couples a chemical reaction between an electron donor (such as NADH) and an electron acceptor (such as O2) to the transfer of H+ ions across a membrane, through a set of mediating biochemical reactions.

photorespiration

The chemical combination of carbohydrates with oxygen in plants with the release of carbon dioxide. Photorespiration requires the presence of light as happens during photosynthesis. TERM 47

transpiration

DEFINITION 47 the passage of water through a plant from the roots through the vascular system to the atmosphere. TERM 48

diffusion

DEFINITION 48 Diffusion is a time-dependent process, constituted by random motion of given entities and causing the statistical distribution of these entities to spread in space. TERM 49

osmosis

DEFINITION 49 Osmosis is the diffusion of water through a semi-permeable membrane. TERM 50

water potential

DEFINITION 50 Water potential is the potential energy of water relative to pure free water (e.g.

cohesion

The force of attraction that holds molecules of a given substance together TERM 52

adhesion

DEFINITION 52 Adhesion is the tendency of certain dissimilar molecules to cling together due to attractive forces. TERM 53

gametes

DEFINITION 53 A gamete (from Ancient Greek ; translated gamete = wife, gametes = husband) is a cell that fuses with another gamete during fertilization (conception) in organisms that reproduce sexually. TERM 54

haploid

DEFINITION 54 Having a single set of each chromosome in a cell or cell nucleus TERM 55

diploid

DEFINITION 55 Having paired sets of chromosomes in a cell or cell nucleus. In diploid organisms that reproduce sexually, one set of chromosomes is inherited from each parent

sepal

one of the individual leaves or parts of the calyx of a flower. TERM 62

petal

DEFINITION 62 A petal (from Ancient Greek petalon "leaf", "thin plate") is one member or part of the corolla of a flower. TERM 63

stamen/amdroecium

DEFINITION 63 The male reproductive organ of a flower, consisting of a filament and a pollen-bearing anther at its tip TERM 64

carpel/gynoecium

DEFINITION 64 One of the individual female reproductive organs in a flower. A carpel is composed of an ovary, a style, and a stigma TERM 65

double

fertilization

DEFINITION 65 process in which the two sperm nuclei of a pollen grain unite with nuclei of the embryo sac of an angiosperm plant. One sperm nucleus unites with the egg to form the diploid zygote, from which the embryo develops. The other sperm unites with the two nuclei located in a single cell at the center of the embryo sac. Together these nuclei form the triploid nucleus of the cell from which the endosperm develops. Double fertilization in this form is unique to the angiosperms.

endosperm

tissue that surrounds and provides nourishment to the embryo in the seeds of many angiosperms TERM 67

inflorescence

DEFINITION 67 An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. TERM 68

pollination

DEFINITION 68 Pollination is the process by which pollen is transferred in plants, thereby enabling fertilization and sexual reproduction. TERM 69

anther

DEFINITION 69 The pollen-bearing part at the upper end of the stamen of a flower TERM 70

style

DEFINITION 70 part of the female organ of a flower

compound fruit

A compound fruit is one that develops from several ovaries in either a single flower or multiple flowers. TERM 77

determinate growth

DEFINITION 77 refers to growth that is not terminated in contrast to determinate growth that stops once a genetically pre- determined structure has completely formed. TERM 78

phototropism

DEFINITION 78 The growth or movement of a fixed organism toward or away from light, a response to blue wavelengths of light and is caused by a redistribution of auxin from the illuminated side to the darker side of the shoot, resulting in quicker growth on the darker side and bending of the shoot toward the source of light. TERM 79

gravitropism

DEFINITION 79 Gravitropism (or geotropism) is a turning or growth movement by a plant or fungus in response to gravity. TERM 80

achene

DEFINITION 80 is a type of simple dry fruit indehiscent (they do not open at maturity). Achenes contain a single seed that nearly fills the pericarp, but does not adhere to it. Example: Sunflower seed

drupe

In botany, a drupe is a fruit in which an outer fleshy part (exocarp, or skin; and mesocarp, or flesh) surrounds a shell (the pit or stone or pyrene) of hardened endocarp with a seed inside. TERM 82

samara

DEFINITION 82 forms a winglike struture, dry, used for weed dispersal Example: maple TERM 83

capsule

DEFINITION 83 Opens along more then two seams example: Lily TERM 84

berry

DEFINITION 84 The botanical definition of a berry is a simple fruit produced from a single ovary, such as a grape. TERM 85

caryopsis

DEFINITION 85 type of simple dry fruit - one that is monocarpelate and indehiscent (not opening at maturity) and resembles an achene, BUT is fused with the thin seed coat. Example: Corn

antheridia

a male reproductive structure producing gametes, occurring in ferns, mosses, fungi, and algae. TERM 92

frond

DEFINITION 92 the leaves of ferns are referred to as fronds TERM 93

ovule

DEFINITION 93 In seed plants, the ovule is the structure that gives rise to and contains the female reproductive cells. TERM 94

apical dominace

DEFINITION 94 able to block out other plants, gain advantage for survival TERM 95

Photosynthesis equation

DEFINITION 95 6CO2 + 6H2O + Energy -> C6H12O6 + 6O

Cellular Respiration equation

C6H12O6 + 6O2 -> 6CO2 + 6H2O + Energy