Difference between phellogen and phelloderm is

Cork cambium develops in cortex and cuts  off cells on both outer and inner sides of stem.The outer cells differentiate into cork or phelloderm.The various componenets of periderm are phellogen , phellem and phelloderm.

Casparian strips or carsparian strps or casparian bands.

Fusion of intervascicular and intrafascicular cambium strips.

Parenchymatous tissue store starch (food) in potato and sclerenchymatous tissue make the shells of the nuts

Bulliform cells, also known as motor cells, are huge, bubble-shaped epidermal cells found on the top surface of leaves in groups of multiple monocots. These cells are found on the top or adaxial leaf surface.

The vessel members are interconnected through perforations in their end/common walls.

It is made of cellulose, hemicellulose and pectic substances

Floral members, like calyx, corolla and androecium are arranged differently in relation to ovary on the thalamus. Based on this arrangement flowers can be divided as follows

Hypogynous Flower: In hyopgynous flowers, the ovary occupies the highest position. Other floral members are inserted below the ovary, on thalamus. Perigynous Flower: In perigynous flowers, the ovary and other floral members are inserted on the same level on thalamus.
Epigynous Flower: In epigynous flowers, the ovary is at the lowest position on thalamus. Other floral members are inserted above the ovary.

The Inflorescence
A flower is a modified shoot wherein the shoot apical meristem changes to floral meristem. Internodes do not elongate and the axis gets condensed. The apex produces different kinds of floral appendages laterally at successive nodes instead of leaves. When a shoot tip transforms into a flower, it is always solitary. The arrangement of flowers on the floral axis is termed as inflorescence. Depending on whether the apex gets converted into a flower or continues to grow, two major types of inflorescences are defined-racemose and cymose

Racemose Inflorescence. In racemose type of inflorescences the main axis continues to grow, the flowers are borne laterally in an acropetal succession. Acropetal succession means that older flowers are at the base and younger flowers are near the apex
Cymose Inflorescence. 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.

Placentation. The arrangement of ovules within the ovary is known as placentation. The placentation are of different types namely, marginal, axile, parietal, basal, central and free central.
Marginal. In marginal placentation the placenta forms a ridge along the ventral suture of the ovary and the ovules are borne on this ridge forming two rows, as in pea.
Axile. When the placenta is axial and the ovules are attached to it in a multilocular ovary, the placentaion is said to be axile, as in china rose, tomato and lemon. Parietal. In parietal placentation, the ovules develop on the inner wall of the ovary or on peripheral part. Ovary is one-chambered but it becomes two-chambered due to the formation of the false septum, e.g., mustard and Argemone. When the ovules are borne on central axis and septa are absent, as in Dianthus and Primrose the
placentation is called free central.

Basal. In basal placentation, the placenta develops at the base of ovary and a single ovule is attached to it, as in sunflower, marigold.

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.

Pinnately Compound Leaf. In pinnately compound leaf a number of leaflets are present on a common axis. Example, neem leaves.
Palmately Compound Leaf. In palmately compound leaf number of leaflets are attached at the common point. Example, cotton leaves.

Differences between dicot and monocot leaves 

Characteristics of meristematic tisssues are 
(i)Cells are usuall rectangular with thin cell wall made up of cellulose
(ii)They are closely arranged without any intercellular space
(iii)They show a prominent nucleus and are full of cytoplasm.
(iv) They are always capable of division

In dicots, cambium is present between pholem and xylem . These types of vascular bundles are capable to form secondary sylem and pholem tissues.These are konwn as open vascular bundles.In monocots, vascular bundle have no cambium present hence, they do not form secondary tissues.These are known as closed vascular tissues. 

The hormones secreted by plant body  influence anatomical changes in it. In the future  are of abscission , a special narrow abscission  zone develops. It consists of  a upper lignified amd suberised protective layer. The seperation  layer consists of  unthicked cells where the hydrolysing enzymes develop.
Pectnases are secreted out to dissolve middle lamallae.Cellulases bring  about  hydrolysis  of cell walls.Due to this, the seperation layer becomes soft and weak.This leads to sheding of leaves from plants. 

Difference between lenticels and stomata are given below