The Leaf Flashcards
(33 cards)
which bud develeops into a branch
axillary bud
what is arrangement of leaves called
acropetal
most important vegetative organs for photosynthesis
leaves
three main parts of leaf
leaf base
petiole
lamina
which part of leaf is attached to stem
leaf base
leaf base may bear two lateral small leaf like structures called
stipules
in which types of plants does the leaf base expand into a sheath covering the stem partially or wholly
monocotyledons
in which plants does the leaf base become swollen
leguminous plants
the swollen part is called
pulvinus
lamina is also called
leaf blade
middle prominent vein in lamina
midrib
what do veins in lamina do
provide rigidity to leaf blade
act as channels of transport for water, minerals and food materials
arrangement of veins and veinlets in lamina of leaf is called
venation
two types of venation
reticulate
parallel
when veinlets form a network, venation is of what type
reticulate
when veins run parallel to each other within a lamina, venation is of what type
parallel
which plants usually possess reticulate venation
dicots
which plants usually possess parallel venation
monocots
two types of leaves
simple
compound
when is a leaf said to be simple
lamina is entire or if incisions are present, they do not reach midrib
when is a leaf said to be compound
when incisions of lamina reach the midrib, breaking the lamina into leaflets
is axillary bud present in axil of leaflets
no
two types of compound leaves
pinnately compound
palmately compound
in which type of compound leaves are the leaflets present on a common axis
pinnately compound
