Coronavirus symptoms
SymptomCommon human coronavirusesCommon human coronaviruses, including types 229E, NL63, OC43 and HKU1, generally cause mild to moderate diseases in the upper respiratory tract, such as the common cold. Most people…
Structure of the Fruit
Structure of the Fruit ,Fruits consist of dermal, ground (fundamental), and vascular tissue systems · The fruit wall is made up of three layers collectively forming the pericarp; § Exocarp § …
Classification of Leaves
· External leaf characteristics (such as shape, margin, hairs, etc.) are important for identifying plant species · Leaves are determinant in growth i.e. they grow and achieve a specific pattern…
Internal Structures of a Plant Leaf
· The leaf is made up of three tissue systems (Dermal, Ground and Vascular) · The dermal tissue system consists of lower and upper epidermis · The ground tissue system…
Pharmacognostic Importance of Epidermis
Leaves offer diagnostic characteristics which serve in quality control of leaf drugs Shape, size and wall structure of the epidermal cells Straight –walled epidermal cells are found in medicinal…
Internal Structures of the Dicot Stem
· Internal structure of dicotyledonous stem consists of Epidermis, Cortex and Stele.· Epidermis§ It consists of a single layer of parenchymatous rectangular cells § Epidermal cells are compactly arranged without…
Anatomy of the Dicotyledonous Roots
· The Dicotyledonous Root· Rhizodermis or Epiblema§ Outermost layer aka rhizodermis (epidermis in stems) made of a single layer of parenchyma cells which are arranged compactly without intercellular spaces, with…
Anatomy of the Monocotyledonous Roots
· Internal structure of monocot roots shows the following tissue systems§ Epiblema or rhizodermis§ Cortex and § SteleThe Rhizodermis or Epiblema§ Outermost layer of the root§ Single row of…
Properties of Plant Tissues
· Characteristics of Meristematic Tissues § May be round, oval, polygonal or rectangularin shape§ Are closely arranged without intercellular spaces§ Have dense cytoplasm with large nuclei. § Have smaller vacuoles,…
What is Permanent Tissue
· Permanent Tissue (Mature cells incapable of division)§ Are tissues that have temporarily or permanently lost the power to divide§ The cells formed by the apical meristem are differentiated into…
