KORPER KAPPE THEORY PDF

With respect to these the histogen theory fails. Korper-Kappe Theory The Korper-Kappe theory of root apical organization proposed by Schuepp (, ). Meristems, Tissues, Shoot apex, Root apex, Apical Cell Theory, Shoot. Apical Meristem Histogen Theory, Korper-Kappe Theory, Mantle-Core Theory, Tunica. Plant Anatomy Theories Different theories about plant anatomy and different types of cells playing important role in proper functioning of plant.

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The Korper-Kappe Theory of Root Apex | Essay | Botany

In this region the T is inverted, i. In this type there is a single row of initials which, ultimately, gives rise to various zones of the root including the root cap. The korper-kappe theory of root apex is comparable with tunica-corpus theory of shoot apex. The outer region of the root apex is the Kappe. Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top. This theory attributes specific destinies to the derivatives of the three histogens.

The following points highlight the top three theories of root apical meristem in plants. This is a question and answer forum for students, teachers and general visitors for exchanging articles, answers and notes.

Ontogeny of Stoma in Plants Plants. This type is found in majority of dicotyledonous plants. This cell divides longitudinally and both the daughter cells inherit the property of cell division. The other three sides donate cells to form epidermis, cortex and vascular cylinder.

The cells of this region divide first horizontally. This happens due to cell divisions that occur in such a way that a single longitudinal file of cells becomes double files.

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According to Hanstein root apical meristem consists of three cell-initiating regions called histogens Fig.

The second type is very rare and found in Allium sativum, Aloe vera, Amaryllis, Eucharis etc. It is based on differences in the planes of cell division. Such divisions are described as T-divisions. The body-cap concept and tunica-corpus concept both koorper based solely on the planes of cell division. The initial cell divides transversely. The theory was put forward by Schuepp Apical cell theory is confined to vascular cryptogams only as the root apical meristem of flowering plants does not have a single apical cell.

A single apical cell korepr present korpet in vascular cryptogams, e. In this type, generally two rows of initials are observed at the apex. In Brassica dicot dermatogen generates both protoderm and root cap and this histogen is referred to as dermatocalyptrogen.

The third type is found in Haemanthus coccineus. Histogen theory explains both root and shoot apical meristem. In contrast to that of the shoot apex, the apical meristem of the root apex generates cells not only kirper the axis but also away from it to form the root cap.

In the kappe the initial cell first divides transversely and forms two cells.

Top 3 Theories of Root Apical Meristem in Plants | Botany

The central part of root cap is the columella where the cells are arranged in longitudinal files. It consists of conspicuous longitudinal files of cells. Equisetum, Adiantum and Polypodium etc. The apical meristem of the root is sub- terminal in position as the root cap remains terminal.

Answer Now and help others. The root apex forms no branches, and no lateral structures like the leaves. Hanstein in advocated the theory. Apical Cell Theory 2. The root meristem exhibits multicellular structure. The zones exhibit clear boundary when they originate from separate initials, e.

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Anybody can ask a akppe Anybody can answer The best answers are voted up and rise to the top. The zones do not exhibit sharp demarcation line when they are the derivatives of same apical cell.

Thus the planes of the two divisions form a T in a median longitudinal section of the root.

The Korper-Kappe Theory of Root Apex | Essay | Botany

The epidermis arises from the outermost layer of the cortex. Composition of Sporopollenin in Spores and Pollen Plants. Answer Now and help others.

The boundaries between korper and kappe, and between tunica and corpus are not always sharply demarcated. The daughter cell that faces the base of root, i.

korper kappe theory Archives – Botany Studies

The apical oappe is tetrahedral in shape and generates root cap from one side. The first type is found in Zephyranthes sp. The two cells thus formed have the capability of cell division. This theory was proposed by Nageli who drew the attention to the occurrence of a single apical cell or apical initial that composes the root meristem.

The daughter cells divide by transverse partitions followed by longitudinal partitions.