The document discusses the internal structure of dicot and monocot roots. It describes the key layers and tissues found in roots, including the epiblema, cortex, endodermis, pericycle, vascular bundles, xylem, phloem and pith. In dicot roots, the vascular bundles vary from 2-6 and are radial, while in monocot roots they vary from 8-20 and are also radial. The pith is poorly developed or absent in dicots but highly developed in monocots.
Xerophytes are plants which grow in xeric environment. They have adapted morphological, physiological and anatomical changes in order to survive in xeric conditions. Various anatomical adaptations in xerophytic plants which helps to absorb as much as water as possible, to store for long time and to reduce the rate of transpiration which enables them to survive in xeric condition are included in the presentation.
Xerophytes are plants which grow in xeric environment. They have adapted morphological, physiological and anatomical changes in order to survive in xeric conditions. Various anatomical adaptations in xerophytic plants which helps to absorb as much as water as possible, to store for long time and to reduce the rate of transpiration which enables them to survive in xeric condition are included in the presentation.
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Taxus is a representative of conifers which is a prominent member in that group.It shows so many remarkable features in its morphology , Anatomy ,Reproduction and life cycle. It's economically importance is also great. This presentation is a overall description about Taxus.
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Taxus is a representative of conifers which is a prominent member in that group.It shows so many remarkable features in its morphology , Anatomy ,Reproduction and life cycle. It's economically importance is also great. This presentation is a overall description about Taxus.
The outermost layer is termed as epiblema.
Cuticle and stomata are absent. Cortex is formed of parenchymatous cells.
Endodermis is well developed.
Pericycle is distinct. Vascular bundles are radial. Xylem is exarch.
Phloem consists of sieve tubes, companion cells and phloem parenchyma. (In monocots however, the phloem parenchyma is absent).
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i have explained about "plant tissue" in previous slideshare (hope you visited).in this presentation i have explained about "plant tissue system" ,it made easy to learn and classified to get better knowledge on concept.
it includes,epidermal tissue,trichomes ,stomata ,Development of stomata, Classification of stomata: based on development ,Classification of stomata: based on structure, shape and arrangements of subsidiary cell ,Agenous stomata, mesogenous stomata, Perigenous stomata ,Anomocytic stomata ,Anisocytic stomata,Diacytic stomata ,Paracytic stomata, Actinocytic stomata ,Gramineous stomata, root hairs, vasuclar tissue,xylem, Xylem vessel ,Tracheids, xylem Parenchyma,xylem fiber,phloem,Sieve tube, Companion cells ,phloem Parenchyma ,phloem Fibres,ground tissue, Cortex, Pericycle, Pericycle ,Pith..etc.
We all have good and bad thoughts from time to time and situation to situation. We are bombarded daily with spiraling thoughts(both negative and positive) creating all-consuming feel , making us difficult to manage with associated suffering. Good thoughts are like our Mob Signal (Positive thought) amidst noise(negative thought) in the atmosphere. Negative thoughts like noise outweigh positive thoughts. These thoughts often create unwanted confusion, trouble, stress and frustration in our mind as well as chaos in our physical world. Negative thoughts are also known as “distorted thinking”.
Ethnobotany and Ethnopharmacology:
Ethnobotany in herbal drug evaluation,
Impact of Ethnobotany in traditional medicine,
New development in herbals,
Bio-prospecting tools for drug discovery,
Role of Ethnopharmacology in drug evaluation,
Reverse Pharmacology.
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The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
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Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
2. Plant anatomy
• Primary internal structure of root
• Diagnostic features of root-
• The epiblema or piliferous layer is present. Here the stomata
and cuticle layer are absent.
• The root hairs are unicellular.
• The endodermis has casparian layer.
• The vascular bundles are radial type.
• The xylem is exarch
• Anatomy of dicot root
3. Diagnostic features of dicot root
• Number of VB varies from 2-6.
• The pericycle produces lateral roots and cambium during the
secondary growth
• The pith is poorly developed or absent.
• The secondary growth is present
4. • Internal structure of a typical dicot root shows the following
structure –
• 1. Epiblema or piliferous layer- It is the outermost protective
supporting and uniseriate layer. It is made up of compactly
arranged parenchymatous cells. Some cells produces unicellular
root hairs Both epiblema and root hairs absorb sap from the soil.
• 2. Cortex- It lies below the epiblema. It occupies the massive part
of the root. It is made of loosely arranged parenchymatous cells
with a large number of intercellular spaces that allow gaseous
exchange. The cortical cells help in the storage of food materials.
5. • 3. Endodermis- I It is the innermost layer of the cortex. It iis composed
of uniseriate and barrel shaped parenchymatous cells. Most of the
cell are characterized by the presence of band like thickenings of
suberin and lignin on their radial wall and tangential walls. These
thickenings are called as casperian strips. But some cells laying
opposite to the proto xylem remain un thickened and are called as
passage cells that allow diffusion of sap.
6. • 4. Pericycle- It lies just below the endodermis. It consists of a
uniseriate parenchymatous cells. The lateral roots, vascular
cambium and cork cambium are originated from this layer.
• 5. Conjunctive tissue- The xylem and phloem are separated from
each other by thin walled parenchymatous conjunctive tissue.
• 6.Vascular bundles- VBs are radial type. Number of xylem and
phloem varies from 2-6 i.e diarch to hexarch. Both xylem and
phloem are equal in number. The xylem is exarch.
• Xylem- The protoxylem vessels bear annular and spiral Thickening
while metaxylem vessels have reticulate and pitted thickenings,
xylem parenchyma and fibres are absent .
7. • Phloem- It lies alternate to xylem . The patches are smaller
and consist of sieve tube , companion cells and phloem
parenchyma. The phloem fibers are absent.
• Pith – The central mass of parenchymatous tissue is called
pith. In dicot roots , the pith is absent on highly reduced .
8.
9. Diagnostic features of monocot root
•Number of VB varies from 8-20.
•The pericycle produces only lateral roots
•The pith is developed.
•The secondary growth is absent.
10. • Internal structure of atypical monocot root shows the following
structure –
• 1. Epiblema or piliferous layer- It is the outermost protective
supporting and uniseriate layer. It is made up of compactly arranged
parenchymatous cells. Some cells produces unicellular root hairs Both
epiblema and root hairs absorb sap from the soil.
• 2. Cortex- It lies below the epiblema. It occupies the massive part of
the root. It is made of loosely arranged parenchymatous cells with a
large number of intercellular spaces that allow gaseous exchange. The
cortical cells help in the storage of food materials.
11. • 3. Endodermis- I It is the innermost layer of the cortex. It iis composed
of uniseriate and barrel shaped parenchymatous cells. Most of the
cell are characterized by the presence of band like thickenings of
suberin and lignin on their radial wall and tangential walls. These
thickenings are called as casperian strips. But some cells laying
opposite to the proto xylem remain un thickened and are called as
passage cells that allow diffusion of sap.
12. • 4. Pericycle- It lies just below the endodermis. It consists of a
uniseriate parenchymatous cells. The lateral roots are originated
from this layer.
• 5. Conjunctive tissue- The xylem and phloem are separated from
each other by thin walled parenchymatous conjunctive tissue.
• 6.Vascular bundles- VBs are radial type. Number of xylem and
phloem varies from 8-20 i.e polyarch. Both xylem and phloem are
equal in number. The xylem is exarch.
• Xylem- The protoxylem vessels bear annular and spiral Thickening
while metaxylem vessels have reticulate and pitted thickenings,
xylem parenchyma and fibers are absent .
13. • Phloem- It lies alternate to xylem . The patches are smaller
and consist of sieve tube , companion cells and phloem
parenchyma. The phloem fibers are absent.
• Pith – The central mass of parenchymatous tissue is called
pith. In monocot roots , the pith is highly developed.