plant morphology Flashcards
What is inflorescence
inflorescence is a cluster of flowers or placement of flowers on a stalk.
what is racemose inflorescence, give 2 examples
main axis is of unlimited growth, broad from the bottom short from top. ex Mustard, banana
what is cymose inflorescence with 2 examples
main axis is of limited growth and short from bottom ex: cotton and jasmine
what is cup shaped inflorescence with example and the other infolrecense
hypanthodium ex ficus, cyathium
pedicel
stalk of a flower
Receptacle or thalamus
swollen or expanded portion at the stalk which bears the floral leaves
what are the 4 whorls
- corolla
- calyx
- Androecium
- Gynoecium
what are the 2 calyxs with examples
1,Gamosepalous: when the setals are fused together eg china rose
2. polysepalous: when sepals are free eg mustard
what are the 2 corollas?
Gamopetalous: petals are fused together eg petunia
Polypetalous: petals are free eg: mustard
types of Androecium(cohesion) stamen?
Monoadelphous: filaments fused into one single bundle
Diadelphous: filaments fused into 2 bundles eg: pea
Polyadelphous filaments fused into 2 more bundels eg: lemon
all of the, anthers are free
Syngenesious: anthers are united but filaments are free
types of stamens
Didynamous: 4 stamens, two are long and two short eg: tulsi
Tetradynamous: 6 stamens, 4 are long 2 are short eg mustard
adhesion of stamens( attachment of stamens)
Epipetalous: stamens are attached to petals by their filaments and anthers are free. eg sunflower
Gynandrous: stamens are attached to carpels eg calotrips
number of carpels?
Monocarpellary: has one carpel eg: pea
Bicarpellary: two carpel eg: mustard
Polycarpellary: many carpel eg: rose
fused or free carpels name
Apocarpous: when carpels are free eg:rose
Syncarpous: When carpels are wholly of partially fused eg: china rose
Based on bracts
Ebracteate: flower without bract
bracteate: flower with bract eg bougainvillea.
