Anatomy root stem leaf Flashcards
many cells of –protude in the form of unicellular root hairs in dicot roots
epiblema
chara of CORTEX of dicot roots
thin walled parenchymatous cells with intercellular spaces
————comprises a single layer of barrel shaped cells without intercellular spaces
epidermis
———-has suberin in their tangential and radial walls
epiderml cells
pericycle of dicot root chara
thick walled parenchymatous cells
initiation of lateral roots vascular cambium during secondory growth takes place in
pericycle
pith of dicot root
small and insconspicuous
what is conjuctive tissue
parenchymatous cells lie bet xylem and phloem
usualluy how many xylem and phloem patches in dicot roots
2-4
in dicot roots ,,later —-froms between xylem and phloem
cambium ring
STELE
pericycle
vascular bundle
pith
in monocot roots usuallyy there are ——xylem bundles
six (polyarch)
pith of monocot roots is
large and well developed
———–roots do not undergo any secondary growth
monocot roots
cuticle seen in
sstem
epidermis of dicot stem covered with a thin layer of cuticle and may bear
trichome and a few stomata
what constitute pith in dicot stem
cells arranged in multiple layers between epidermis and pericycle
innermost layer of cortex in dicot root is
endodermis
three sub zones in cortex part in dicot stem
hypodermis
cortical layers
endodermis
hypodrmis consistes of
few layers of collenchymatous cells
hypodermis fn
provides mechanical strength to young stem
cortical layer features
rounded thin walled parenchymatous cells with conspicous intercellular spaces
—————are rich in grains and are referred to as starch sheath
endodermis
pericycle in dicot stem is in the form of
semilunar oatched of sclerenchyma
in beween vascular bundles in in dicot stem there r a few layers of radially placed ——cells which constitute——-
parenchymatous cells which constitutes medullary rays
vascular bundles in dicot stem is
conjoint open with endarch protoxylem
———–with large intercellular spaces constitutes central portion of stem called pith
rounded parenchymatous cells
hypodermis in monocot stem
schlerenchymatous
vascular bundles arrangement in dicot stem
ring like
vascular bundle arrangedment in monocot stem
scattered and each surrounded by sclerenchymatous bundle sheath and a large conspicous parenchymatous ground tissue
ground tissue in monocot stem
parenchymatous
vascular bundles in monocot stem
conjoint and closed
phloem parenchyma is absent in
monocot stem
water containing caviyies are present within vascular bundles of
monocot stems
epidermis has a ——-type of cuticle in dicot leaf
conspicous
3 main parts of dicot leaf
epidermis
mesophil
vascular sytem
uppersurface of dicot leaf is called
adaxial epidermis
——-epidermis generally bears more stomata
abaxial
tissue between upper and lower epidermis is called
mesophyll
mesophyll fn and chara
posses thin walled chloroplast and carry out photosyenthesis
pallisade parenchyma is placed
adaxiallyy
mesophil has 2 type of cells
palisade parenchyma
spongy parenchyma
adaxially placed pallisade parenchyma made up of ———-which are arragned ———- and parallel to each other
elongated cells
vertically
the oval and round spongy parenchyma is situated below
below the pallisade cells and extends to lower epidermis
vascular bundles in dicot leaves can be seen in
veins and midrib
size of vascular bundles in dicot leaves depends on
size of the veins
vascular bundles in dicot leaves are sorrounded by a layer of thick walled
bundle sheath cells
vascular bundles covered by bundle sheath in which structures
monocot stem and dicot leaf
in dicot leaves stomata must be presentin abaxial and adaxial epidermis true or false
false ;in adaxial epidermis its not mandatory to have stomata ‘'’they may even lack stomata
isobilateral leaf otherwise called
monocot leaves
mesophyl is not differentiated in
monocot leaves
stomata is present in both of the epidermis in
monocot leaves
in grasses ,———along the ————-modify themselves into large empty colourless cells called bulliform cellls
adaxial epidermis along the veins
the leaves get flaccid due to
water stress
when bulliform cells in leaf absorbed water its called
turgid and the leaf gets exposed
