Plant Biology Flashcards
Botany
the study of plants and “plant-like” organisms
Autotrophic
Self-Feeding
Photosynthesis
Plants make food from light
Heterotrophic
“Other-feeding”
Theophrastus
Father of Botany
Theophrastus’ 3 Organs
Stem, Leaf, Root
Theophrastus’ 4 Growth Forms
Tree, Shrub, Herb, Vine
Dioscorides
Wrote Materia Medica - medicinal use of plants
Doctrine of Signatures
Plants that look like b body parts are good for that body part
Linnaeus
originated the use of binomial nomenclature (2-part name)
3 Domains
Archaea, Bacteria, Eukarya
4 Kingdoms of Eukarya
Protista, Plantae, Fungi, Animalia
Cell Theory
Organisms are built of cells; cells come from preexisting cells
Cytoplasm composition
membranes, organelles, cytoplasmic ground substance
Protoplast
living part of the cell; cytoplasm and nucleus
Plasma Membrane
Outer boundary of protoplast; control what moves in & out
Nucleus
“control center” containing DNA (genes)
Nuclear Envelope
Outer membrane of the nucleus
Chromatin
DNA and proteins in nucleus
Chromosomes
form of chromatin during cell division
nucleolus
round structure inside nucleus; makes ribosomes
vacuole
fluid-filled sac largest structure in the cell waste repository structure growth pigmentation of some cells
tonoplast
the membrane of the vacuole
ribosomes
site of protein synthesis
ER
conduit for the movement of materials; reaction surface; ribosome attachment
Golgi body
“packaging center”
vesicle
small balloon-like package of material
plastids
complex organelles found in plants (& algae)
chloroplast
contains chlorophyll; site of photosynthesis
chromoplast
contains other pigments doesn’t carry out photosynthesis
leucoplast
lacks pigments; used for food storage
mitochondrion
“powerhouse of the cell”
microtubules
tiny, hollow fibers of protein
flagella & cilia
tiny hair-like structures some cell have for locomotion
spindle fibers
form during cell division (used in Anaphase)
Cellulose
polymer of glucose
Polymer
large, chain-like molecule made of repeating subunits (monomers)
Matrix of a cell wall (between cellulose fibers)
hemicellulose pectin waxes lignin proteins
lignin
hard, rigid material
middle lamella
glue holding plant cells together
plasmodesmata
cytoplasmic channels going between plant cells
Endosymbiont Theory
origin of complex organelles - chloroplast and mitochondrion