Androecium is composed of stamens. Each stamen which represents the male reproductive organ consists of a stalk or a filament and an anther. Each anther is usually bilobed and each lobe has two chambers, the pollen-sacs. The pollen grains are produced in pollen-sacs.

The shoot apical meristem changes into floral meristem. This finally results in development of flower. Internodes do not elongate and the axis gets condensed. Nodes, in stead of producing leaves, produce different floral parts.

In simple leaf lamina is usually entire and when the lamina is showing incision, the incision do not touch the midrib.
In compound leaf, the incision on lamina reach up to the midrib, which results in number of leaflets. Presence or absence of axillary bud also shows the difference between leaf and leaflets

Difference. Prop roots come out of branches of the main stem and they come from greater heights. Stilt roots come out from the main stem and they come out from just above the ground.
Similarity. Both prop roots and stilt roots give additional mechanical support to the plant.

Veins and veinlets are like supply channels in leaves. They transport water to leaves and take back products of photosynthesis to different parts of plants.

In cymose type of inflorescence the main axis terminates in a flower, hence is limited in growth. The flowers are borne in a basipetal order. In basipetal succession older flowers are at the apex and younger flowers are near the base.

Modifications of Leaves
Leaves are often modified to perform functions other than photosynthesis. Tendrils. They are converted into tendrils for climbing as in peas or into spines for defence as in cacti.
Bulb.
The fleshy leaves of onion and garlic store food.
In some plants such as Australian acacia, the leaves are small and short-lived.The petioles in these plants expand, become green and synthesise food. Leaves of certain insectivorous plants such as pitcher plant, venus-fly trap are also modified leaves.

(a) 

(b)

Difference between lenticels and stomata are

Differences between intrafascicular cambium and interfascicular cambium are 

Differences between sapwood and heartwood are

The portion of conjunctive parenchyma or tissue present below the phloem bundles dedifferentiates to form brick shaped  cells of vascular cambium.
The process of dedifferentiation of conjuctive parenchyma spreads laterally  between xylem and phloem bundles.The portion of the pericycle in contact with protoxylem also becomes meristematic.It produces a complete continuous wavy ring of vascular cambium that passes from below bundles to above the xylem bundles. 

Sclereids, a type of sclerenchyma.

In gymnosperms , Vessel elements are not present in xylem, whereas , these are main constituents in angiosperms . In the phloem of gymnosperms, companion cells are not associated with the sieve elements . In angiosperms , companion cells are associated with the sieve elements of phloem.

Heartwood It is seconadry xylem with highly lignified walls.In old trees, considerableregion of secondary  xylem is dark brown due to accumulation of tanini, resins, oils, gums and other organic materials .The substances make is heart and resistant to microbes and insects.
Sapwood  Sapwood is the peripheral region of secondary which is lighter in colour and involved in conduction of water and minerals from root to leaf