M4: PLANT HISTOLOGY Flashcards
histology came from the words:
“histos” - tissue
“logia” - study of
study of tissue
HISTOLOGY
histos
tissue
logia
study of
cells are made up of __
tissues
a group of CLOSELY ASSOCIATED cells that PERFORM RELATED STRUCTURE and are similar in structure
PLANT TISSUE (a system)
3 types of PLANT TISSUES
GROUND TISSUE
DERMAL TISSUE
VASCULAR TISSUE
where CELL DIVISION takes place
MERISTEMATIC STEM
PRIMARY MERISTEMS
PROTODERM
GROUND MERISTEM
PROCAMBIUM
lahat ng nakausli (stem pataas)
SAM - SHOOT APICAT MERISTEM
root meristem kinempers
RAM - ROOT APICAT MERISTEM
OUTERMOST; forms EPIDERMIS
PROTODERM
ground tissue (cortex + epidermis)
GROUND MERISTEM
INNERMOST; primary vascular tissue
PROCAMBIUM
where tissues ORIGNIATE
MERISTEM
- lengthen stems and roots
- responsible for PRIMARY GROWTH
APICAL MERISTEMS
- increase WIDTH of stems
- responsible for SECONDARY GROWTH
LATERAL MERISTEMS
TWO TYPES OF LATERAL MERISTEMS
VASCULAR CAMBIUM
CORK CAMBIUM
vascular tissue
VASCULAR CAMBIUM
cork - woody plant
CORK CAMBIUM
PRODUCES TISSUES FOR SECONDARY GROWTH that function primarily in support and conduction
VASCULAR CAMBIUM
is in the form of a THIN CYLINDER that runs the length of roots and stems of WOODY PLANTS
CORK CAMBIUM
where does cork cambium lies?
OUTSIDE THE VASCULAR CAMBIUM
it lies outside the vascular cambium
CORK CAMBIUM
grasses and related plants - neither cork / vascular cambium
INTERCALARY MERISTEMS
have APICAL MERISTEMS in the vicinity of nodes (these are leaf attachment areas)
INTERCALARY MERISTEMS
DEVELOP AT INTERVALS along stems, where, like the tissues produced by apical meristems, their tissues ADD TO STEM LENGTH.
INTERCALARY MERISTEMS
PROTECTS THE SOFT TISSUES of plants and CONTROLS INTERACTIONS WITH THE PLANTS’ SURROUNDINGS
DERMAL TISSUE
a dermal tissue that is usually a SINGLE LAYER of cells COVERING the YOUNGER PARTS of a plant. it secretes a waxy layer called the cuticle that inhibits water loss
EPIDERMIS
a WAXY LAYER that the epidermis secretes which INHIBITS WATER LOSS
CUTICLE
3 REGIONS OF LEAF
EPIDERMIS
MESOPHYLL
VEINS
this exists on younger plants
EPIDERMIS
covers and protects plant surfaces
EPIDERMIS
in plants with secondary growth, the ____ replaces epidermis
PERIDERM
a WAXY SUBSTANCE sa PERIDERM
SUBERIN
GAS EXCHANGE sa PERIDERM
LENTICELS
found in adult plants
PERIDERM
aerial roots
VELAMEN ROOTS
produce aerial roots called velamen roots
EPIDERMIS
most epidermal cells secrete a FATTY SUBSTANCE called _____ within and on the surface of the outer walls
CUTIN
cutin forms a protective layer called the
CUTICLE
constitutes the outer bark and is primarily composed of somewhat rectangular and box-like CORK CELLS, which are DEAD at maturity
PERIDERM
the PERIDERM secretes a fatty substance called
SUBERIN
waterproofing to protect the phloem and other tissues from frying out and mechanical injury
SUBERIN
cork cells are present
PERIDERM
bubble shaped cells
BULLIFORM CELLS
location where MOST of the PHOTOSYNTHESIS takes place
MESOPHYLL
UPPER REGION with compactly stacked BARREL SHAPED or post shaped parenchyma cells in two rows; with 80% of leaf chloroplast
PALASIDE MESOPHYLL
PALASIDE MESOPHYLL is composed of __% of leaf chloroplast
80%
LOWER REGION containing LOOSELY ARRANGED parenchyma cells with lots of AIR SPACES in between them, with cells having NUMEROUS CHLOROPLAST
SOPNGY MESOPHYLL
type of mesophyll that is not found in MONOCOTS
SPONGY MESOPHYLL
central vein
MIDRIB
o The HAIR LIKE STRUCTURE in the epidermis
TRICHOMES
these tissues are involved in photosynthesis, storage, regeneration, support, and protection
GROUND TISSUE
a COMPLEX plant tissue
EPIDERMIS
epidermis is usually __ cell thick
ONE
3 TYPES OF GROUND TISSUE
PARENCHYMA
SCLERENCHYMA
COLLENCHYMA
have THIN CELL WALLS and large vacuoles and are MOST ABUNDANT OF ALL THE CELLS
PARENCHYMA
this is found in parenchyma cells
INTERCELLULAR SPACE
this performs photosynthesis and STORE PROTEIN AND STARCH
PARENCHYMA
ALIVE AT MATURITY
PARENCHYMA
a type of parenchyma cell that is found in AQUATIC PLANTS
AERENCHYMA
composed of ELONGATED CELLS and have THICK CELL WALL
COLLENCHYMA
a type of parenchyma cell na MARAMING CHLOROPLASTS
CHLORENCHYMA
intercellular space is NOT FOUND in ____
COLLENCHYMA
provide support for GROWING TISSUES, like stem
COLLENCHYMA
DEAD AT MATURITY
SCHLERENCHYMA
composed of NARROW DEAD THICK-WALLED CELLS
SCHLERENCHYMA
UNEVEN CELL WALL
COLLENCHYMA
provide SUPPORT FOR THE PLANT
SCLERENCHYMA
hardening agent that is found in SCLERENCHYMA
LIGNIN
composed of XYLEM and PHLOEM which function in the TRANSPORT OF WATER AND DISSOLVED SUBSTANCES
VASCULAR TISSUE
transports material BETWEEN THE ROOT AND THE SHOOT of the plant
VASCULAR TISSUE
XYLEM is also known as
CONDUCTING SCHLERENCHYMA
conducted water and dissolved materials
XYLEM
these cells are DEAD and HOLLOW AT MATURITY that are found in xylem
CONDUCTING CELLS
consist of a combination of parenchyma cells, fibers, vessels, tracheids, and ray cells
XYLEM
LONG TUBES composed of individual cells, called vessel elements
VESSELS
vessels are composed of individual cells called ______
VESSEL ELEMENTS
a cell wall in xylem that is only present during maturity
RAY CELLS
are dead at maturity and have relatively thick secondary cell walls, are TAPERED AT EACH END, the ends OVERLAPPING with those of other tracheids
TRACHEIDS
TRANSPORTS SUGARS (throughout the leaf of the plant)
PHLOEM
cells that are found in phloem that ASSIST IN THE LOADING OF SUGARS
COMPANION CELLS
mix of sclerenchyma, parenchyma, etc.
COMPANION CELLS
Its main conducting cells are sieve-tubes members
PHLOEM
flowering plants
DICOT
found BETWEEN THE CORTEX AND VASCULAR TISSUE
ENDODERMIS