Pteridophytes are the first true land plants in the evolution of plants. Most pteridophytes are terrestrial and prefer cool, moist, shady environments, though some are aquatic, xerophytic, or epiphytic. Plant bodies are sporophytic and differentiated into roots, stems, and leaves. Roots are adventitious and stems are usually branched without branches arising from leaf axils. Leaves range from small and scaly to large and compound. Vascular tissue consists of xylem and phloem with tracheids and sieve tubes respectively.
The term "algae" covers many different organisms capable of producing oxygen through photosynthesis (the process of harvesting light energy from the sun to generate carbohydrates).
Algae are a diverse group of aquatic organisms that have the ability to conduct photosynthesis. Certain algae are familiar to most people; for instance, seaweeds (such as kelp or phytoplankton), pond scum or the algal blooms in lakes. However, there exists a vast and varied world of algae that are not only helpful to us, but are critical to our existence.
In this presentation, concept of epiphytes, types of epiphytes, and adaptations (morphological, anatomical and physiological) developed in them are are explained.
Kingdom Plantae is further classified on the basis of characteristics like absence or presence of seeds, vascular tissues, differentiation of plant body, etc.
Phylum lycophyta (Club mosses, Spike mosses & Quillworts)Fasama H. Kollie
Lycophytes are believed to be the oldest living lineage of vascular plants. Lycophytes , also known as ‘ferns allies’, are a clade of vascular plants similar to ferns, but have unique leaves called microphylls. Lycophytes contain three orders; lycopodium (club mosses), selaginella (spike mosses) and isoetales (Quillworts)
The term "algae" covers many different organisms capable of producing oxygen through photosynthesis (the process of harvesting light energy from the sun to generate carbohydrates).
Algae are a diverse group of aquatic organisms that have the ability to conduct photosynthesis. Certain algae are familiar to most people; for instance, seaweeds (such as kelp or phytoplankton), pond scum or the algal blooms in lakes. However, there exists a vast and varied world of algae that are not only helpful to us, but are critical to our existence.
In this presentation, concept of epiphytes, types of epiphytes, and adaptations (morphological, anatomical and physiological) developed in them are are explained.
Kingdom Plantae is further classified on the basis of characteristics like absence or presence of seeds, vascular tissues, differentiation of plant body, etc.
Phylum lycophyta (Club mosses, Spike mosses & Quillworts)Fasama H. Kollie
Lycophytes are believed to be the oldest living lineage of vascular plants. Lycophytes , also known as ‘ferns allies’, are a clade of vascular plants similar to ferns, but have unique leaves called microphylls. Lycophytes contain three orders; lycopodium (club mosses), selaginella (spike mosses) and isoetales (Quillworts)
How to Create Map Views in the Odoo 17 ERPCeline George
The map views are useful for providing a geographical representation of data. They allow users to visualize and analyze the data in a more intuitive manner.
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.
Instructions for Submissions thorugh G- Classroom.pptxJheel Barad
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The Indian economy is classified into different sectors to simplify the analysis and understanding of economic activities. For Class 10, it's essential to grasp the sectors of the Indian economy, understand their characteristics, and recognize their importance. This guide will provide detailed notes on the Sectors of the Indian Economy Class 10, using specific long-tail keywords to enhance comprehension.
For more information, visit-www.vavaclasses.com
Students, digital devices and success - Andreas Schleicher - 27 May 2024..pptxEduSkills OECD
Andreas Schleicher presents at the OECD webinar ‘Digital devices in schools: detrimental distraction or secret to success?’ on 27 May 2024. The presentation was based on findings from PISA 2022 results and the webinar helped launch the PISA in Focus ‘Managing screen time: How to protect and equip students against distraction’ https://www.oecd-ilibrary.org/education/managing-screen-time_7c225af4-en and the OECD Education Policy Perspective ‘Students, digital devices and success’ can be found here - https://oe.cd/il/5yV
Palestine last event orientationfvgnh .pptxRaedMohamed3
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
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”.
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
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.
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
3. Majority of the living Pteridophytes are terrestrial and prefer to
grow in cool, moist and shady places e.g., ferns. Some members are
aquatic (e.g., Marsilea, Azolla), xerophytic (e.g., Selaginella rupestris,
Equisetum) or epiphytic (e.g., Lycopodium squarrosum)
Marsilea
Diplezium
esculentum
Selaginella
rupestris
Lycopodium
4. Majority of the Pteridophytes are herbaceous but a few are
perennial and tree like (e.g., Angiopteris). Smallest Pteridophyte
is Azolla (an aquatic fern) and largest is Cyathea (tree fern).
5. Plant body is sporophytic and can be
differentiated into root, stem and leaves
7. Stem is usually branched. Branching is monopodial or dichotomous.
Branches do not arise in the axil of the leaves. In many
Pteridophytes stem is represented by rhizome.
8. Leaves may be small, thin, scaly (microphyllous e.g., Equisetum),
simple and sessile (e.g., Selaginella) or large and pinnately
compound (megaphyllous e.g., Dryopteris, Adiantum).
9. Vascular tissue is present in stem and root. It consists of xylem
and phloem. Xylem consists of tracheids only and phloem has
only sieve tubes.
The steel is protostele (e.g., Rhynia, Lycopodium), siphonostele
(e.g., Equisetum), dictyostele Adiantum) or polycyclic (e.g.,
Angiopteris). (ix) Cambium is absent; hence, they do not show
secondary growth.
