Species are groups of actually or potentially interbreeding populations which are reproductively isolated from other such groups. The biological species concept has been prevalent in the evolutionary literature for the last several decades and is emphasized in many college-level biology courses. It is probably the species concept most familiar to biologists in diverse fields, such as conservation biology, forestry, fisheries, and wildlife management. Species defined by the biological species concept have also been championed as units of conservation. The species concept for most phycologists is based on the morphological characters and hence the term ‘species’ means morphospecies. On the other hand, for evolutionary biologists, the term means biological species that can be defined as a reproductive community of populations (reproductively isolated from others) that occupy a specific niche in Nature.
Here is slideshare on the topic classification aims and principles.here the topic of taxonomic hararchy is also discussed.So the topic is important for students searching topic of classification or taxonomic hararchy
1.Definition and basic concepts of Biosystematics, , Historical perspectives of Biosystematics and Taxonomy, Stages of taxonomic procedures-alpha taxonomy, Beta taxonomy and Gamma taxonomy,
Neo taxonomy.
Classical and molecular taxonomic parameters, species concept, systematic gradation of animals, nomenclature, modern scheme of animal classification into sub-Kingdom, division, section, phyla and minor phyla
This presentation was given by Dr. Avishek Bhattacharjee in Botanical Nomenclature Course held in Botanical Survey of India, Eastern Regional Centre, Shillong in November 2016. This may be helpful to the undergraduate and post graduate Botany students to understand different types of taxonomic literature, especially Flora, Revision and Monograph.
Species are groups of actually or potentially interbreeding populations which are reproductively isolated from other such groups. The biological species concept has been prevalent in the evolutionary literature for the last several decades and is emphasized in many college-level biology courses. It is probably the species concept most familiar to biologists in diverse fields, such as conservation biology, forestry, fisheries, and wildlife management. Species defined by the biological species concept have also been championed as units of conservation. The species concept for most phycologists is based on the morphological characters and hence the term ‘species’ means morphospecies. On the other hand, for evolutionary biologists, the term means biological species that can be defined as a reproductive community of populations (reproductively isolated from others) that occupy a specific niche in Nature.
Here is slideshare on the topic classification aims and principles.here the topic of taxonomic hararchy is also discussed.So the topic is important for students searching topic of classification or taxonomic hararchy
1.Definition and basic concepts of Biosystematics, , Historical perspectives of Biosystematics and Taxonomy, Stages of taxonomic procedures-alpha taxonomy, Beta taxonomy and Gamma taxonomy,
Neo taxonomy.
Classical and molecular taxonomic parameters, species concept, systematic gradation of animals, nomenclature, modern scheme of animal classification into sub-Kingdom, division, section, phyla and minor phyla
This presentation was given by Dr. Avishek Bhattacharjee in Botanical Nomenclature Course held in Botanical Survey of India, Eastern Regional Centre, Shillong in November 2016. This may be helpful to the undergraduate and post graduate Botany students to understand different types of taxonomic literature, especially Flora, Revision and Monograph.
Biological screening of herbal drugs: Introduction and Need for
Phyto-Pharmacological Screening, New Strategies for evaluating
Natural Products, In vitro evaluation techniques for Antioxidants, Antimicrobial and Anticancer drugs. In vivo evaluation techniques
for Anti-inflammatory, Antiulcer, Anticancer, Wound healing, Antidiabetic, Hepatoprotective, Cardio protective, Diuretics and
Antifertility, Toxicity studies as per OECD guidelines
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
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.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
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Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
Embracing GenAI - A Strategic ImperativePeter Windle
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This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
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Acetabularia acetabulum is a single-celled green alga that in its vegetative state is morphologically differentiated into a basal rhizoid and an axially elongated stalk, which bears whorls of branching hairs. The single diploid nucleus resides in the rhizoid.
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
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In this webinar you will learn how your organization can access TechSoup's wide variety of product discount and donation programs. From hardware to software, we'll give you a tour of the tools available to help your nonprofit with productivity, collaboration, financial management, donor tracking, security, and more.
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17.1 history of classification
1. Early Systems of Classification
Biologists use a
system of
classification to
organize
information about
the diversity of
living things.
17.1 The History of Classification
Organizing Life’s DiversityChapter 17
2. Aristotle’s System
More than 2000 years ago, Aristotle
developed the first widely accepted system of
biological classification.
Organizing Life’s Diversity
Aristotle classified organisms as either animals
or plants.
17.1 The History of Classification
Chapter 17
3. Organizing Life’s Diversity
Animals were classified according to the
presence or absence of “red blood.”
Animals were further grouped according to
their habitats and morphology.
morphology: the study of the form and
structure of living things
Plants were classified by average size and
structure as trees, shrubs, or herbs.
17.1 The History of Classification
Chapter 17
4. Linnaeus’s System
Organizing Life’s Diversity
Linnaeus’s system of classification was the
first formal system of taxonomy.
Bird of prey Wading bird
Perching bird
17.1 The History of Classification
Chapter 17
5. Binomial Nomenclature
Organizing Life’s Diversity
Linnaeus’s method of naming organisms,
called binomial nomenclature, gives each
species a scientific name with two parts.
The first part is the genus name, and the
second part is the specific epithet, or specific
name, that identifies the species.
17.1 The History of Classification
Chapter 17
6. Biologists use
scientific names
for species
because common
names vary in their
use.
Organizing Life’s Diversity
17.1 The History of Classification
Chapter 17
Scientific Name: Ursus americanus
Common Names: black bear
cinnamon bear
American black bear
North American black bear
7. When writing a scientific name, scientists use these rules:
Organizing Life’s Diversity
1. The first letter of the genus name always is capitalized,
but the rest of the genus name and all letters of the
specific epithet are lowercase.
2. If a scientific name is written in a printed book or
magazine, it should be italicized.
3. When a scientific name is written by hand, both parts of
the name should be underlined.
4. After the scientific name has been written completely, the
genus name will be abbreviated to the first letter in later
appearances (e.g., C. cardinalis).
17.1 The History of Classification
Chapter 17
8. Taxonomic Categories
Organizing Life’s Diversity
The taxonomic categories
used by scientists are part
of a nested-hierarchal
system.
Each category is
contained within
another, and they
are arranged from broadest to most specific.
17.1 The History of Classification
Chapter 17
9. Species and Genus
Organizing Life’s Diversity
A named group of organisms is called a taxa.
A genus (plural, genera) is a group of species
that are closely related and share a common
ancestor.
17.1 The History of Classification
Chapter 17
10. A family is the next higher taxon, consisting
of similar, related genera.
Family
Organizing Life’s Diversity
17.1 The History of Classification
Chapter 17
11. Higher Taxa
Organizing Life’s Diversity
An order contains related families.
A class contains related orders.
A phylum contains related classes.
The taxon of related phyla or divisions is a
kingdom.
The domain is the broadest of all the taxa and
contains one or more kingdoms.
17.1 The History of Classification
Chapter 17