Tissue System Flashcards
(24 cards)
three types of tissue system
epidermal
ground / fundamental
vascular / conducting
epidermal tissue system comprises of
epidermal cells
stomata
epidermal appendages
what are included in the epidermal appendages
trichomes
hairs
which type of cells are epidermal cells
parenchyma
outside of epidermis is often covered with a waxy thick layer called _____________ which prevents ______________
cuticle
loss of water
cuticle is absent in
roots
stomata are structures present in epidermis of
leaves
stomata regulate the processes of
transpiration
gaseous exchange
each stoma is composed of
guard cells
stomatal pore
in which plants, guard cells are dumb bell shaped
grasses
stomatal apparatus comprises of
guard cells
stomatal aperture
subsidiary cells
function of root hairs
absorb water and minerals from soil
what are trichomes
epidermal hairs on stem
trichomes can be ___________ or _____________ (x4)
unicellular - multicellular
branched - unbranched
soft - stiff
secretory - non secretory
function of trichomes
help in preventing water loss due to transpiration
in primary stem and roots, parenchyma of ground tissue are usually present in
cortex
pericycle
pith
medullary rays
chlorenchyma of ground tissue of leaves is called
mesophyll
what constitute vascular bundles
xylem
phloem
in dicot stems, ___________ is present between phloem and xylem
cambium
vascular bundles of dicot stems are called
open vascular bundles
in monocot stems, vascular bundles are called
closed vascular bundles
when xylem and phloem are present on different radii such as in _____________, this arrangement is called _____________
roots
radial arrangement
xylem and phloem are on same radii such as in ___________________, arrangement is called _____________
stems and leaves
conjoint arrangement
in conjoint vascular bundles, which is usually located outside, xylem or phloem?
phloem
