This document summarizes the morphology, anatomy, and modifications of leaves. It describes the different types of leaves including foliage leaves, cotyledons, scale leaves, bracts, bracteoles, and more. It also discusses leaf morphology features like the apex. Furthermore, it examines storage leaves, tendrils, spines, scale leaves, and other modifications. The anatomy of monocot and dicot leaves is analyzed including their epidermis, mesophyll, vascular system, and identifying features.
This is a three chapter review for the Agriculture Major Admission Test conducted by the College of Agriculture of Cavite State University, the topicsare: Plant Bilogy, Crop and Agriculture and basic Physiological processes of plants. Credits to all my sourceswhich include lecture notes from our faculty, online sources and books published in the Republic of the Philippines.
Subterranean organs characters and function, Subterranean Stem, Rhizome, Types of rhizomes, Histology of Subterranean Stem, The tegumentary tissue, Roots, Types of roots, Histology of dicotyledon Roots, Main differences between roots and subterranean stems, Anomalous structure in subterranean organs, In subterranean stem, Rhubarb, star spots, in Roots, Aconite, stellate form, senega, keel, Jalap, tertiary cambia, Orizaba Jalap, Belladonna and Gentian.
This is a three chapter review for the Agriculture Major Admission Test conducted by the College of Agriculture of Cavite State University, the topicsare: Plant Bilogy, Crop and Agriculture and basic Physiological processes of plants. Credits to all my sourceswhich include lecture notes from our faculty, online sources and books published in the Republic of the Philippines.
Subterranean organs characters and function, Subterranean Stem, Rhizome, Types of rhizomes, Histology of Subterranean Stem, The tegumentary tissue, Roots, Types of roots, Histology of dicotyledon Roots, Main differences between roots and subterranean stems, Anomalous structure in subterranean organs, In subterranean stem, Rhubarb, star spots, in Roots, Aconite, stellate form, senega, keel, Jalap, tertiary cambia, Orizaba Jalap, Belladonna and Gentian.
the top three theories of root apical meristem in plants. The theories are: 1. Apical Cell Theory 2. Histogen Theory 3. Korper-Kappe Theory.The root apical meristem, or root apex, is a small region at the tip of a root in which all cells are capable of repeated division and from which all primary root tissues are derived. The root apical meristem is protected as it passes through the soil by an outer region of living parenchyma cells called the root cap.
Plants are an essential part of the ecosystem. Every life on the earth is directly or indirectly dependent on plants. Among the different parts of a plant, the leaf is the most essential.
This is a Life Cycle of Shpagnum, A good content for Masters Students. (But this content is not made by me...but i thought that this will help many students who are in search for content)
Thank you š
the top three theories of root apical meristem in plants. The theories are: 1. Apical Cell Theory 2. Histogen Theory 3. Korper-Kappe Theory.The root apical meristem, or root apex, is a small region at the tip of a root in which all cells are capable of repeated division and from which all primary root tissues are derived. The root apical meristem is protected as it passes through the soil by an outer region of living parenchyma cells called the root cap.
Plants are an essential part of the ecosystem. Every life on the earth is directly or indirectly dependent on plants. Among the different parts of a plant, the leaf is the most essential.
This is a Life Cycle of Shpagnum, A good content for Masters Students. (But this content is not made by me...but i thought that this will help many students who are in search for content)
Thank you š
Natural farming @ Dr. Siddhartha S. Jena.pptxsidjena70
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A brief about organic farming/ Natural farming/ Zero budget natural farming/ Subash Palekar Natural farming which keeps us and environment safe and healthy. Next gen Agricultural practices of chemical free farming.
UNDERSTANDING WHAT GREEN WASHING IS!.pdfJulietMogola
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Many companies today use green washing to lure the public into thinking they are conserving the environment but in real sense they are doing more harm. There have been such several cases from very big companies here in Kenya and also globally. This ranges from various sectors from manufacturing and goes to consumer products. Educating people on greenwashing will enable people to make better choices based on their analysis and not on what they see on marketing sites.
Artificial Reefs by Kuddle Life Foundation - May 2024punit537210
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Situated in Pondicherry, India, Kuddle Life Foundation is a charitable, non-profit and non-governmental organization (NGO) dedicated to improving the living standards of coastal communities and simultaneously placing a strong emphasis on the protection of marine ecosystems.
One of the key areas we work in is Artificial Reefs. This presentation captures our journey so far and our learnings. We hope you get as excited about marine conservation and artificial reefs as we are.
Please visit our website: https://kuddlelife.org
Our Instagram channel:
@kuddlelifefoundation
Our Linkedin Page:
https://www.linkedin.com/company/kuddlelifefoundation/
and write to us if you have any questions:
info@kuddlelife.org
Willie Nelson Net Worth: A Journey Through Music, Movies, and Business Venturesgreendigital
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Willie Nelson is a name that resonates within the world of music and entertainment. Known for his unique voice, and masterful guitar skills. and an extraordinary career spanning several decades. Nelson has become a legend in the country music scene. But, his influence extends far beyond the realm of music. with ventures in acting, writing, activism, and business. This comprehensive article delves into Willie Nelson net worth. exploring the various facets of his career that have contributed to his large fortune.
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Introduction
Willie Nelson net worth is a testament to his enduring influence and success in many fields. Born on April 29, 1933, in Abbott, Texas. Nelson's journey from a humble beginning to becoming one of the most iconic figures in American music is nothing short of inspirational. His net worth, which estimated to be around $25 million as of 2024. reflects a career that is as diverse as it is prolific.
Early Life and Musical Beginnings
Humble Origins
Willie Hugh Nelson was born during the Great Depression. a time of significant economic hardship in the United States. Raised by his grandparents. Nelson found solace and inspiration in music from an early age. His grandmother taught him to play the guitar. setting the stage for what would become an illustrious career.
First Steps in Music
Nelson's initial foray into the music industry was fraught with challenges. He moved to Nashville, Tennessee, to pursue his dreams, but success did not come . Working as a songwriter, Nelson penned hits for other artists. which helped him gain a foothold in the competitive music scene. His songwriting skills contributed to his early earnings. laying the foundation for his net worth.
Rise to Stardom
Breakthrough Albums
The 1970s marked a turning point in Willie Nelson's career. His albums "Shotgun Willie" (1973), "Red Headed Stranger" (1975). and "Stardust" (1978) received critical acclaim and commercial success. These albums not only solidified his position in the country music genre. but also introduced his music to a broader audience. The success of these albums played a crucial role in boosting Willie Nelson net worth.
Iconic Songs
Willie Nelson net worth is also attributed to his extensive catalog of hit songs. Tracks like "Blue Eyes Crying in the Rain," "On the Road Again," and "Always on My Mind" have become timeless classics. These songs have not only earned Nelson large royalties but have also ensured his continued relevance in the music industry.
Acting and Film Career
Hollywood Ventures
In addition to his music career, Willie Nelson has also made a mark in Hollywood. His distinctive personality and on-screen presence have landed him roles in several films and television shows. Notable appearances include roles in "The Electric Horseman" (1979), "Honeysuckle Rose" (1980), and "Barbarosa" (1982). These acting gigs have added a significant amount to Willie Nelson net worth.
Television Appearances
Nelson's char
WRIās brand new āFood Service Playbook for Promoting Sustainable Food Choicesā gives food service operators the very latest strategies for creating dining environments that empower consumers to choose sustainable, plant-rich dishes. This research builds off our first guide for food service, now with industry experience and insights from nearly 350 academic trials.
"Understanding the Carbon Cycle: Processes, Human Impacts, and Strategies for...MMariSelvam4
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The carbon cycle is a critical component of Earth's environmental system, governing the movement and transformation of carbon through various reservoirs, including the atmosphere, oceans, soil, and living organisms. This complex cycle involves several key processes such as photosynthesis, respiration, decomposition, and carbon sequestration, each contributing to the regulation of carbon levels on the planet.
Human activities, particularly fossil fuel combustion and deforestation, have significantly altered the natural carbon cycle, leading to increased atmospheric carbon dioxide concentrations and driving climate change. Understanding the intricacies of the carbon cycle is essential for assessing the impacts of these changes and developing effective mitigation strategies.
By studying the carbon cycle, scientists can identify carbon sources and sinks, measure carbon fluxes, and predict future trends. This knowledge is crucial for crafting policies aimed at reducing carbon emissions, enhancing carbon storage, and promoting sustainable practices. The carbon cycle's interplay with climate systems, ecosystems, and human activities underscores its importance in maintaining a stable and healthy planet.
In-depth exploration of the carbon cycle reveals the delicate balance required to sustain life and the urgent need to address anthropogenic influences. Through research, education, and policy, we can work towards restoring equilibrium in the carbon cycle and ensuring a sustainable future for generations to come.
Micro RNA genes and their likely influence in rice (Oryza sativa L.) dynamic ...Open Access Research Paper
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Micro RNAs (miRNAs) are small non-coding RNAs molecules having approximately 18-25 nucleotides, they are present in both plants and animals genomes. MiRNAs have diverse spatial expression patterns and regulate various developmental metabolisms, stress responses and other physiological processes. The dynamic gene expression playing major roles in phenotypic differences in organisms are believed to be controlled by miRNAs. Mutations in regions of regulatory factors, such as miRNA genes or transcription factors (TF) necessitated by dynamic environmental factors or pathogen infections, have tremendous effects on structure and expression of genes. The resultant novel gene products presents potential explanations for constant evolving desirable traits that have long been bred using conventional means, biotechnology or genetic engineering. Rice grain quality, yield, disease tolerance, climate-resilience and palatability properties are not exceptional to miRN Asmutations effects. There are new insights courtesy of high-throughput sequencing and improved proteomic techniques that organismsā complexity and adaptations are highly contributed by miRNAs containing regulatory networks. This article aims to expound on how rice miRNAs could be driving evolution of traits and highlight the latest miRNA research progress. Moreover, the review accentuates miRNAs grey areas to be addressed and gives recommendations for further studies.
Diabetes is a rapidly and serious health problem in Pakistan. This chronic condition is associated with serious long-term complications, including higher risk of heart disease and stroke. Aggressive treatment of hypertension and hyperlipideamia can result in a substantial reduction in cardiovascular events in patients with diabetes 1. Consequently pharmacist-led diabetes cardiovascular risk (DCVR) clinics have been established in both primary and secondary care sites in NHS Lothian during the past five years. An audit of the pharmaceutical care delivery at the clinics was conducted in order to evaluate practice and to standardize the pharmacistsā documentation of outcomes. Pharmaceutical care issues (PCI) and patient details were collected both prospectively and retrospectively from three DCVR clinics. The PCI`s were categorized according to a triangularised system consisting of multiple categories. These were āchecksā, āchangesā (āchange in drug therapy processā and āchange in drug therapyā), ādrug therapy problemsā and āquality assurance descriptorsā (ātimer perspectiveā and ādegree of changeā). A verified medication assessment tool (MAT) for patients with chronic cardiovascular disease was applied to the patients from one of the clinics. The tool was used to quantify PCI`s and pharmacist actions that were centered on implementing or enforcing clinical guideline standards. A database was developed to be used as an assessment tool and to standardize the documentation of achievement of outcomes. Feedback on the audit of the pharmaceutical care delivery and the database was received from the DCVR clinic pharmacist at a focus group meeting.
3. ā¢ The leaf is a flattened, lateral outgrowth of the stem in
the branch, developing from a node and having a bud in
its axil.
ā¢ It is normally green in colour and manufactures food
for the whole plant.
ā¢ The leaves take up water and carbon dioxide and
convert them into carbohydrates in the presence of
sunlight and chlorophyll.
ā¢ Leaves always follow an acropetal development and are
exogenous in origin.
4. Types of Leaves:
On the basis of origin point:
Radical:
Proceeding from or near the root, e.g., onion,
radish, etc.
Cauline:
Pertaining to the stem, e.g., palms.
Cauline and Ramal:
Pertaining to the main stem as well as its branches,
e.g., mango.
6. Types of leaves
1. Foliage Leaves: They are most common types
of leaves for photosynthesis.
7. 2. Cotyledons:
ā¢ They are seed leaves &
they are 1 inmonocots
& 2 in dicots.
ā¢ Cotyledons nourish the
embryo.
ā¢ After germination
cotyledons manufacture
food by becoming 1st
foliage leaves.
8. 3. Scale
leaves/cataphylls:
ā¢ They are non-green,
brown,
ā¢ Small, thin sessile &
membranous
structures.
ā¢ eg. Bud scales, scales
on aerial stem like
Ruscus.
9. 4. Bracts/Hypsophylls:
ā¢ They are specialized
leaves which bears
flowers in their axils.
ā¢ They protect the
young floral buds &
when coloured they
attract the insects.
ā¢ Eg. Bougainvillea
10. 5. Bracteoles:
ā¢ They are two small leaf like structures which are
found attached to the stalk of flower, aggregate to
form whorls of epicalyx below the sepals.
11. 6. Prophylls:
ā¢ They are the 1st one /two leaves of the branch
which differ from other leaves.
ā¢ They form spines in Aegle (Bael) & Citrus.
12. 7. Floral Leaves:
ā¢ They are special leaves which represent vegetative parts of
flowers eg. Sepals, petals.
8. Sporophylls:
ā¢ They are modified spore bearing leaves of flowers eg.
Stamens & carpels.
9. Stipules:
ā¢ They are two small leaf like lateral appendages present at
leaf base.
10. Ligules:
ā¢ They are minute scale-like outgrowths present at the upper
end of leaf sheath in grasses.
22. IV. Apex:
The apex of the lamina may be :
(1) Acuteāwhen pointed and narrow as in mango.
(2) Acuminateāwhen the apex is drawn out into a long tapering tail as in
Ficus religiosa (pipul).
(3) Obtuseāwhen the apex is broad angled and blunt as in banyan.
(4) Mucronateāwhen the apex is broad but the tip forms a sharp point as
in Vinca.
(5) Cuspidate or spinyāwhen the apex forms a spinous structure as in
pineapple, date palm, Pandanus, etc.
(6) Tendrillarāwhen the apex forms a tendril for climbing as in Gloriosa.
(7) Cirrhoseāwhen the mucronate-like apex ends in a fine thread-like
structure as in banana.
(8) Truncateāwhen the apex is abruptly cut across as in Paris polyphylla
of Lilia-ceae.
(9) Retuseāwhen the obtuse apex is slightly notched as in Pistia or
Clitoria.
(10) Emarginateāwhen the obtuse apex is deeply notched as in Bauhinia.
25. ā¢ In many plants, leaves get modified to
perform some special functions other than the
normal ones, such as photosynthesis and
transpiration.
ā¢ Sometimes these modifications are in
response to certain environmental conditions.
26. 1. Storage Leaves:
ā¢ Some plants of xerophytic habitats
and members of the family
Crassulaceae generally have highly
thickened and succulent leaves with
water storage tissue.
ā¢ These leaves have large
parenchymatous cells with big
central vacuole filled with
hydrophilic colloid.
ā¢ This kind of adaptation helps plants
to conserve very limited supply of
water and resist desiccation (drying
up).
27. 2. Leaf Tendrils:
In weak- stemmed plants, leaf or a part of leaf gets
modified into green threadlike structures called tendrils
which help in climbing around the support.
ā¢ The parts of leaf which get modified into tendrils are as
follows:
ā¢ (i) Entire Leaf is Modified into Tendril, e.g., Lathyrus
aphaca (wild pea) (Fig. 4.19).
ā¢ (ii) Upper Leaflets Modified into Tendrils, e.g, Pisum
sativum (pea) (Fig. 4.20), Lathyrus odoratus (sweet pea).
ā¢ (iii) Terminal leaflets Modified into Tendrils, e.g.,
Naravelia
28.
29. ā¢ (iv) Leaf Tip Modified into Tendril, e.g.,
Gloriosa (Glory lily)
ā¢ (v) Petiole Modified into Tendril, e.g., Clematis
ā¢ (vi) Stipule Modified into Tendril, e.g., Smilax
30. 3. Leaf-spines:
ā¢ Leaves of certain plants become wholly or partially modified
for defensive purpose into sharp, pointed structures known as
spines.
ā¢ Thus, in prickly pear (Opuntia) the minute leaves of the
axillary bud are modified into spines.
ā¢ The leaf-apex in date-palm, dagger plant (Yucca) etc., is so
modified,
ā¢ while in plants like prickly or Mexican poppy (Argemone),
Amercian aloe (Agave), Indian aloe (Aloe), etc., spines develop
on the margin as well as at the apex.
ā¢ In barberry the leaf itself becomes modified into a spine;
while the leaves of the axillary bud are normal.
31.
32. 4. Scale-leaves:
ā¢ Typically these are thin, dry, stalkless,
membranous structures, usually brownish
in colour or sometimes colourless.
ā¢ Their function is to protect the axillary bud
that they bear in their axil.
ā¢ Sometimes scale-leaves are thick and
fleshy, as in/onion; then their function is
to store up water and food.
ā¢ Scale-leaves are common in parasites,
saprophytes, underground stems, etc.
They are also found in Casuarina,
Asparagus etc.
33. 5. Leaflet Hooks:
ā¢ In Bignonia unguiscati the three terminal
leaflets of leaf get modified into claw like
hooks which help in climbing
6. Leaf Roots:
ā¢ In case of Salvinia three leaves are present at
one node. Out of these two leaves are normal
and third gets modified into adventitious roots
which help in floating over the surface of
water
36. 8. Insect Catching Leaves:
(i) Leaf-Pitcher:
This is a device to catch insects for fulfilling the deficiency of
nitrogen in the medium where plant is growing.
In case of Nepenthes, Dischidia and Sarracenia leaf-lamina is
modified into pitcher-like structure called leaf-pitcher.
37. (ii) Leaf Bladder:
ā¢ Some of the segments of the leaf are modified
into bladders or utricles.
38. (ii) Leaf Bladder:
ā¢ Some of the segments of the leaf are modified
into bladders or utricles.
39. (iii) In Drosera
ā¢ The lamina possesses numerous spine-like
hairs spreading all around. Each hair has a
shining sticky globule at its tip which contains
digestive enzymes.
42. Epidermis:
1. Two epidermal layers are present, one each on upper
and lower surfaces.
2. Uniseriate upper and lower epidermal layers are
composed of more or less oval cells.
3. Few big, motor cells or bulliform cells are present in
groups here and there in the furrows of upper epidermis.
4. Stomata, each consisting of a pore, guard cells and a
stomatal chamber, are present on both the epidermal
layers.
5. A thick cuticle is present on the outer walls of
epidermal cells.
6. Bulliform cells help folding of leaves.
43. Mesophyll:
7. It is not clearly differentiated into palisade and spongy
parenchyma but the cells just next to the epidermal layers are a
bit longer while the cells of the central mesophyll region are oval
and irregularly arranged.
8. The cells are filled with many chloroplasts.
9. Many intercellular spaces are also present in this region.
10. Sub-stomatal chambers of the stomata are also situated in
this region.
44. Vascular System:
11. Many vascular bundles are present. They are arranged in a
parallel series.
12. The central vascular bundle is largest in size.
13. Vascular bundles are conjoint, collateral and closed.
14. Each vascular bundle remains surrounded by a double-
layered bundle sheath.
15. Outer layer of bundle sheath consists of thin-walled cells
while the inner layer is made up of thick-walled cells.
16. On the upper as well as lower surfaces of large vascular
bundles are present patches of sclerenchyma which are closely
associated with the epidermal layers.
17. Xylem occurs towards the upper surface and phloem towards
lower surface.
45. 18. Xylem consists of vessels and tracheids.
Sometimes small amount of xylem parenchyma
is also present.
19. Phloem consists of sieve tubes and
companion cells.
Xerophytic Characters:
(i) Thick cuticle on epidermis.
(ii) Presence of motor cells.
(iii) Sclerenchyma patches are present.
(iv) Stomata in furrows.
46. Identification:
(a) 1. Presence of upper and lower epidermal
layers.
2. Mesophyll is present.
3. Each vascular bundle is surrounded by bundle
sheathā¦ā¦ā¦ā¦. Leaf
(b) 1. Many vascular bundles are arranged
parallaley.
2. Absence of cambium.
3. Vascular bundles are collateral and closed.
4. Stomata on both the surfaces.
Isobilateral monocot leaf.
48. Epidermis:
1. An epidermal layer is present on the upper as
well as lower surfaces.
2. One-celled thick upper and lower epidermal
layers consist of barrel-shaped, compactly
arranged cells.
3. A thick cuticle is present on the outer walls of
epidermal cells. Comparatively, thick cuticle is
present on the upper epidermis.
4. Stomata are present only on the lower
epidermis.
49. Mesophyll:
5. It is clearly differentiated into palisade and spongy parenchyma.
6. Palisade lies just inner to the upper epidermis. It is composed of
elongated cells arranged in two layers.
7. The cells of palisade region are compactly arranged and filled
with chloroplasts. At some places the cells are arranged loosely and
leave small and big intercellular spaces.
8. Palisade cells are arranged at a plane at right angle to the upper
epidermis, and the chloroplasts in them are arranged along their
radial walls.
9. Parenchymatous cells are present above and below the large
vascular bundles. These cells interrupt the palisade layers and are
said to be the extensions of the bundle sheath.
10. Spongy parenchyma region is present just below the palisade
and extends upto the lower epidermis.
11. The cells of spongy parenchyma are loosely arranged, filled with
many chloroplasts and leave big intercellular spaces.
50. Vascular Region:
12. Many large and small vascular bundles are present.
13. Vascular bundles are conjoint, collateral and closed.
14. Each vascular bundle is surrounded by a bundle sheath.
15. Bundle sheath is parenchymatous and in case of large
bundles it extends upto the epidermis with the help of thin-
walled parenchymatous cells.
16. The xylem is present towards the upper epidermis and
consists of vessels and xylem parenchyma. Protoxylem is present
towards upper epidermis while the metaxylem is present
towards the lower epidermis.
17. Phloem is present towards the lower epidermis and consists
of sieve tubes, companion cells and phloem parenchyma.
51. Identification:
(a) 1. Presence of expanded portion or blade.
2. Presence of mesophyll.
3. Bundle sheath is presentā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦ā¦.
leaf
(b) 1. Upper and lower epidermal layers are clearly
distinguishable.
2. Mesophyll is clearly differentiated into palisade
and spongy parenchyma.
3. Stomata only on the lower surface- dicot leaf