![dichasial cyme dichasial cyme](http://w3.biosci.utexas.edu/prc/EV/cym/EVNU2-BritHond-7111-2fls-1x-16in.jpg)
Angiospermic saprophytes are also called humus plants, e.g., Indian pipe ( Monotropa), bird’s nest orchid ( Neottia), chain orchid (Pholidota), coral root ( Corallorhiza), etc. Saprophytes: They obtain their nourishment from dead organic matters.There are, however, many plants, which draw their organic food from different sources and are called heterotrophic plants. Majority of angiospermic plants are autotrophs.Tree having largest crown: Banyan tree (Ficus benghalensis). Tallest plant (angiosperm): Eucalyptus regnans (114 metres or 375 feet height).Arceuthobium is another small angiosperm plant which is parasitic over Pinus and other trees. Smallest angiosperm: Wolffia (0.1mm diameter).These plants usually bear flowers and fruits every year and do not die after producing flowers. Perennials – Survives for several years.They die off after producing flowers and fruits, e.g., Radish, turnip, carrot are biennial in colder areas. Biennials – Complete their life cycle in two years-growing, vegetative and storing food in the first year flowering and fruiting in the second year.They pass the unfavourable period in the form of seeds, eg., Mustard, Pea. Annuals – Complete their life cycle in one year or single growing season or few weeks to a few months.Depending upon their life span, plants are classified as –.It deals with the study of forms and features of different plant organs like roots, stems, leaves, flowers, seeds, fruits etc. The leaf blade is compound (i.e.Morphology – (Morphe = form + logos = study). The leaf blade margin is serrate (with forward-pointing) or dentate (with outward-pointing) with medium-sized to coarse teeth The petiole attaches at the basal margin of the leaf blade The midrib of the leaf blade lacks glands on the upper surface The plant is broad-leaved (with broadly flattened leaf blades) The leaves drop off in winter (or they wither but persist on the plant) The leaf blade has one main vein running from the base toward the tip The main veins of the leaf blade are pinnate (the secondary veins branch off at intervals from the main central vein) and non-arcuate (not arched towards the leaf tip) There are no translucent dots on the leaf blade The leaf blade is herbaceous (has a leafy texture) the leaf blade is ovate (widest below the middle and broadly tapering at both ends).the leaf blade is lanceolate (lance-shaped widest below the middle and tapering at both ends).the leaf blade is elliptic (widest near the middle and tapering at both ends).The hairs on the leaf blade are different from the choices given The underside of the leaf has no noticeable bloom the base of the leaf blade is cuneate (wedge-shaped, tapers to the base with relatively straight, converging edges), or narrow.The upper side of the leaf is not hairy, or has very few hairs the underside of the leaf has hairs on it.The stamens are lined up with the sepals (antesepalous) The sepals are fused to each other (not other flower parts), at least near their bases There are no glands at the tips of the sepal lobes The perianth parts are fused to form a tube, cup, or bell shape The petals are thin and delicate, and pigmented (colored other than green or brown) The flower includes two cycles of petal- or sepal-like structures The ovary is below the point of petal and/or sepal attachment the inflorescence is a panicle (branched with the individual flowers on stalks).the inflorescence is a dichasial cyme (an axis with a terminal flower, below it a pair of branches, each with a terminal flower, these branches may in turn each have a pair of branches and so on).There are two or more ways to evenly divide the flower (the flower is radially symmetrical) There are no enlarged sterile flowers on the plant The anthers show no hint of a pink, reddish or purplish tint