VASCULAR BUNDLE TYPES
CONJOINT: Xylem and phloem in the same radius.
VASCULAR BUNDLE TYPES Read More »
SCIENTIFIC TERMS
LEAF
PHYLLOTAXY: Mode of arrangement of the leaves on its stam and its braches is called phyllotaxy.
VENATION: Pattern of the veins and veinlets in the lamina of leaf is called venation.
RETICULATE VENATION: Veins are irregularly distributed to form a network. Unicostate : When it has only one main midrib. Multicostate: When several main veins are of same thickness.
PARALLEL VENATION : Veins runs parallel to each other do not form network. It is also two types unicostate and multicostate.
CONVERGENT VENATIONS: Main veins runs parallel and converge at the apex
DIVERGENT VENATION: All the main veins spread out towards the margin.
BRACTS AND BRACTEOLES
SPATHE: Large brightly coloured and cover spadix inflorescence.
INVOLUCRE: A large number of bracts form compact one or more whorls around a flower or an inflorescence.
BRACTS AND BRACTEOLES Read More »
TERMS FOR FLOWER
NEUTER: A sterile flower without androecium & gynoecium .Ex. Ray floret of sunflower
TERMS RELATED TO ANDROECIUM
MONOADELPHOUS: All the stamens of a flower are united .filament fused anther are free Ex Hibiscus
DIADELPHOUS: Stamens are in two bundles by fusion of filaments anther are free . Ex Pea
POLYADELPHOUS: Filament fused form more than two groups.Ex. Citrus
SYNGENESIOUS: Anther unite to form a cylinder around style filament are free.
SYNANDROUS: Both anther and filament fuse throughout their whole length . Ex Cucurbita
POLYANDROUS: Stamens are indefinite and free. Ex Ranunculus
TERMS RELATED TO ANDROECIUM Read More »
TERMS RELATED TO FLOWER
ACTINOMORPHIC : A flower with radial symmetry i.e can be divided into equal halves. ZYGOMORPHIC: A flower with bilateral symmetry i.e unequal whorls so flower can be cut into two equal halves by one plane only. ASYMMETRY: A flower that can not be cut into equal halves due to unequal size of whorls.
TERMS RELATED TO FLOWER Read More »