Phylum Mollusca, Class Polyplacophora, Class Monoplacophora, Phylogenetic con...Dr. Muhammad Moosa
In this presentation, Phylum Mollusca Is described. After watching this you will learn Evolutionary Perspective of Mollusca and Relationships to Other Animals, Molluscan Characteristics, Class Gastropoda, Torsion, Shell Coiling, Locomotion, Feeding and Digestion, Other Maintenance Functions, Reproduction and Development, Gastropod Diversity, Class Bivalvia, Shell and Associated Structures Gas Exchange, Filter Feeding, and Digestion, Other Maintenance Functions Reproduction and Development, Bivalve Diversity, Class Cephalopoda, Shell, Locomotion, Feeding and Digestion, Other Maintenance Functions, Learning, Reproduction and Development, Class Polyplacophora, Class Scaphopoda, Class Monoplacophora, Class Solenogastres, Class Caudofoveata, Further Phylogenetic Considerations. It is part of BS Zoology Course, Animal diversity.
In this presentation, Phylum Cnidaria, Coelenterata is described. After watching this you will learn the characteristics of Phylum Cnidaria, Coelenterata, The Body Wall and Nematocysts, Alternation of Generations, Maintenance of Functions, Reproduction, Class Hydrozoa, Class Staurozoa, Class Scyphozoa, Class Cubozoa, Class Anthozoa, locomotion, Digestion, Nutrition,Exchanges with the Environment, Nervous and Sensory Functions, Reproduction and Development, cnidocytes, alternation of generations, polyps, medusa, dactylozooids gastrozooid, gonozoid, obelia, aurelia Jelly fish, coral reef, Hydra, Gonionemus, siphonophora, example and taxonomy of Phylum Cnidaria. It is part of BS Zoology Course Animal diversity.
Phylum Mollusca, Class Polyplacophora, Class Monoplacophora, Phylogenetic con...Dr. Muhammad Moosa
In this presentation, Phylum Mollusca Is described. After watching this you will learn Evolutionary Perspective of Mollusca and Relationships to Other Animals, Molluscan Characteristics, Class Gastropoda, Torsion, Shell Coiling, Locomotion, Feeding and Digestion, Other Maintenance Functions, Reproduction and Development, Gastropod Diversity, Class Bivalvia, Shell and Associated Structures Gas Exchange, Filter Feeding, and Digestion, Other Maintenance Functions Reproduction and Development, Bivalve Diversity, Class Cephalopoda, Shell, Locomotion, Feeding and Digestion, Other Maintenance Functions, Learning, Reproduction and Development, Class Polyplacophora, Class Scaphopoda, Class Monoplacophora, Class Solenogastres, Class Caudofoveata, Further Phylogenetic Considerations. It is part of BS Zoology Course, Animal diversity.
In this presentation, Phylum Cnidaria, Coelenterata is described. After watching this you will learn the characteristics of Phylum Cnidaria, Coelenterata, The Body Wall and Nematocysts, Alternation of Generations, Maintenance of Functions, Reproduction, Class Hydrozoa, Class Staurozoa, Class Scyphozoa, Class Cubozoa, Class Anthozoa, locomotion, Digestion, Nutrition,Exchanges with the Environment, Nervous and Sensory Functions, Reproduction and Development, cnidocytes, alternation of generations, polyps, medusa, dactylozooids gastrozooid, gonozoid, obelia, aurelia Jelly fish, coral reef, Hydra, Gonionemus, siphonophora, example and taxonomy of Phylum Cnidaria. It is part of BS Zoology Course Animal diversity.
The excretory products of the sponges- ammonia and other nitrogen containing substances.
Excretion occurs through both the oscula and the surface of the sponge.
Insects, spiders, crabs, shrimp, millipedes, and centipedes are all arthropods. Arthropods have jointed feet, a segmented body, and an exoskeleton, a cuticle on the outside of their body. Arthropods have by far the greatest number of species of any animal group, at around 900,000 species
Phylum Mollusca-my report..
sorry for some overlapping of texts... i was not able to edit it..it is actually because of the animations that i put it..... i just uploaded it directly :)
Second-largest phylum in number of species- over 100,000 described.
Ecologically widespread- marine, freshwater, terrestrial (gastropods very successful on land)
Variety of body plans (therefore, many classes within the phylum)
Variety in body size- from ~1 mm to ~18 m (60 feet). 80% are under 5 cm, but many are large and therefore significant as food for man.
Phylum Platyhelminthes
Class Turbellaria
Class Monogenea
Class Trematoda
Class Cestoidea
Characteristics
Reproduction and Development
Presentation
Best of Luck
The excretory products of the sponges- ammonia and other nitrogen containing substances.
Excretion occurs through both the oscula and the surface of the sponge.
Insects, spiders, crabs, shrimp, millipedes, and centipedes are all arthropods. Arthropods have jointed feet, a segmented body, and an exoskeleton, a cuticle on the outside of their body. Arthropods have by far the greatest number of species of any animal group, at around 900,000 species
Phylum Mollusca-my report..
sorry for some overlapping of texts... i was not able to edit it..it is actually because of the animations that i put it..... i just uploaded it directly :)
Second-largest phylum in number of species- over 100,000 described.
Ecologically widespread- marine, freshwater, terrestrial (gastropods very successful on land)
Variety of body plans (therefore, many classes within the phylum)
Variety in body size- from ~1 mm to ~18 m (60 feet). 80% are under 5 cm, but many are large and therefore significant as food for man.
Phylum Platyhelminthes
Class Turbellaria
Class Monogenea
Class Trematoda
Class Cestoidea
Characteristics
Reproduction and Development
Presentation
Best of Luck
This PPT is for F.Y.B.Sc students of course I Semester I, belonging to Mumbai University of Maharashtra India. You can email at sudesh_rathod@yahoo.co.in for further query.
Daur Hidup Aurelia Aurita
Penjelasan:
1. Seperti Obelia, Aurellia juga mengalami pergiliran keturunan seksual dan aseksual.
2. Aurellia memiliki alat kelamin yang terpisah pada individu jantan dan betina.
3. Pembuahan ovum oleh sperma secara internal di dalam tubuh individu betina.
4. Hasil pembuahan adalah zigot yang akan berkembang menjadi larva bersilia disebut planula.
5. Planula akan berenang dan menempel pada tempat yang sesuai.
6. Setelah menempel, silia dilepaskan dan planula tumbuh menjadi polip muda disebut skifistoma.
7. Skifistoma kemudian membentuk tunas-tunas lateral sehingga Aurellia tampak seperti tumpukan piring dan disebut strobilasi.
8. Kuncup dewasa paling atas akan melepaskan diri dan menjadi medusa muda disebut Efira.
9. Selanjutnya efira berkembang menjadi medusa dewasa.
Daur Hidup Obelia
Penjelasan:
1. Medusa Dewasa itu ada yang menghasilkan Sel telur (Ovum) dan Sel sperma (Spermatozoid)
2. Ovum dan Sperma yang dilepaskan di air bertemu dan terjadilah fertilisasi
3. Fertilisasi yang terjadi di air akan menghasilkan Zigot
4. Zigot berkembang menjadi Larva Planula
5. Larva Planula kemudian menempel di dasar laut dan tumbuh menjadi Koloni muda dan kemudaian tumbuh menjadi koloni dewasa (polip obelia dewasa)
6. Pada Polip obelia dewasa yang bersifat diploid (2n) terdapat dua jenis polip. Yang pertama Polip Dengan Tentakel yang berfungsi untuk hal nutrisi (makanan) dan yang kedua Polip Tanpa Tentakel yang berfungsi sebagai reproduksi aseksual.
7. Polip tanpa tentakel yang melakukan reproduksi secara aseksual itu menghasilkan Tunas Medusa.
8. Tunas Medusa kemudian lepas dari polip dan tumbuh menjadi Medusa Dewasa.
Sistem Transportasi
Coelenterata tidak memiliki alat transportasi khusus. Makanan dan oksigen diedarkan oleh sel – sel melalui difusi, osmosis, dan transpor aktif.
Misalnya pada hydra, dinding sebelah dalam dari tubuh Hydra berfungsi juga sebagai pencerna dan sebagai alat sirkulasi.
Sistem Ekskresi
• Alat Ekskresi berupa permukaan tubuh , sisa metabolisme dikeluarkan melalui tubuh dengan cara difusi.
• Di bawah mulut terdapat kerong-kongan pendek lalu masuk ke rongga gastrovaskuler untuk dicerna secara ekstraseluler Sel-sel endoderma menyerap sari-sari makanan. Sari makanan diedarkan ke bagian tubuh lainnya secara difusi.
• Sisa-sisa makanan akan dimuntahkan melalui mulut.
1) You need to attended two shows, they shows are only 15 minute.docxmonicafrancis71118
1) You need to attended two shows, they shows are only 15 minutes long. For each show seen you need to write a paragraph summarizing the shows you saw.
The first show we attended was hard to understand what diver is trying to say, they mention it also because the water of that tank is so chili. The diver mentioned that a lot of species are living in this tank, which some are benthic and some are pelagic organisms. They mostly talked about the pelagic organisms in that tank. They chose white sea bass as far as giant sea bass and briefly explain about them. There were thousands of sardines and between them the diver point to the fish called half-moon which it was bigger and silver moon. Half-moons are the feeder of red and green algae, also they can eat some small invertebrates like sponges, crustaceans, and anemones. We were told about the giant bass history in Santa Barbara island, which the scientist didn’t see the organism approximately for forty years but the person who was carrying out the show saw it. She mentioned that scientist by creating a space for these organisms in about thirty or forty years in the nice protected area in the ocean to have no pressure in hunting not even boat driving, they wait for a long time for this species to coming back to protected area and scientists of all over California taking pictures of those animals. The diver also talked about the spots of giant sea bass that we could see on the side of fish that they are specific each and individual.
At the end, he said white sea bass are more open ocean than giant sea bass.
The second show we attended was more interesting for me than the first one. We explored bunch of animal that live there, and talked about some of the organisms that are important and have right force in everything on that tank. We waited for diver to join us to communicate with him. He worn a special mask that allowed him to talk with us. The presenter talked the way that they feed animals, which it was so interesting, the diver goes to target animals and feed them to get the proper diet. The diver mentioned there are six hundred different fishes are living in this tank. The exhibit was so big with 350000 gallons of water. There were two species of shark in that specific exhibit, but they were not like hunting sharks as we see in television. There was an animal that shark close related to which is ray. We saw a diver was feeding those new rays. Rays are related to sharks but they look different. The fishes live in that tank were bony fish and have skeleton. One of them was napoleon wrasse. This organism has a unique adaptation, they all are female and they can change itself to male which this transformation takes about a year. Looks like the name of this fish comes up from the shape it has, because there is a bump on its head that’s why calling it a napoleon wrasse. Bubbles also are another bony fish, that loves to be part of presentation. This fish loves the bubbles and for entire presentation.
Professional air quality monitoring systems provide immediate, on-site data for analysis, compliance, and decision-making.
Monitor common gases, weather parameters, particulates.
Richard's entangled aventures in wonderlandRichard Gill
Since the loophole-free Bell experiments of 2020 and the Nobel prizes in physics of 2022, critics of Bell's work have retreated to the fortress of super-determinism. Now, super-determinism is a derogatory word - it just means "determinism". Palmer, Hance and Hossenfelder argue that quantum mechanics and determinism are not incompatible, using a sophisticated mathematical construction based on a subtle thinning of allowed states and measurements in quantum mechanics, such that what is left appears to make Bell's argument fail, without altering the empirical predictions of quantum mechanics. I think however that it is a smoke screen, and the slogan "lost in math" comes to my mind. I will discuss some other recent disproofs of Bell's theorem using the language of causality based on causal graphs. Causal thinking is also central to law and justice. I will mention surprising connections to my work on serial killer nurse cases, in particular the Dutch case of Lucia de Berk and the current UK case of Lucy Letby.
This pdf is about the Schizophrenia.
For more details visit on YouTube; @SELF-EXPLANATORY;
https://www.youtube.com/channel/UCAiarMZDNhe1A3Rnpr_WkzA/videos
Thanks...!
THE IMPORTANCE OF MARTIAN ATMOSPHERE SAMPLE RETURN.Sérgio Sacani
The return of a sample of near-surface atmosphere from Mars would facilitate answers to several first-order science questions surrounding the formation and evolution of the planet. One of the important aspects of terrestrial planet formation in general is the role that primary atmospheres played in influencing the chemistry and structure of the planets and their antecedents. Studies of the martian atmosphere can be used to investigate the role of a primary atmosphere in its history. Atmosphere samples would also inform our understanding of the near-surface chemistry of the planet, and ultimately the prospects for life. High-precision isotopic analyses of constituent gases are needed to address these questions, requiring that the analyses are made on returned samples rather than in situ.
Multi-source connectivity as the driver of solar wind variability in the heli...Sérgio Sacani
The ambient solar wind that flls the heliosphere originates from multiple
sources in the solar corona and is highly structured. It is often described
as high-speed, relatively homogeneous, plasma streams from coronal
holes and slow-speed, highly variable, streams whose source regions are
under debate. A key goal of ESA/NASA’s Solar Orbiter mission is to identify
solar wind sources and understand what drives the complexity seen in the
heliosphere. By combining magnetic feld modelling and spectroscopic
techniques with high-resolution observations and measurements, we show
that the solar wind variability detected in situ by Solar Orbiter in March
2022 is driven by spatio-temporal changes in the magnetic connectivity to
multiple sources in the solar atmosphere. The magnetic feld footpoints
connected to the spacecraft moved from the boundaries of a coronal hole
to one active region (12961) and then across to another region (12957). This
is refected in the in situ measurements, which show the transition from fast
to highly Alfvénic then to slow solar wind that is disrupted by the arrival of
a coronal mass ejection. Our results describe solar wind variability at 0.5 au
but are applicable to near-Earth observatories.
This presentation explores a brief idea about the structural and functional attributes of nucleotides, the structure and function of genetic materials along with the impact of UV rays and pH upon them.
Slide 1: Title Slide
Extrachromosomal Inheritance
Slide 2: Introduction to Extrachromosomal Inheritance
Definition: Extrachromosomal inheritance refers to the transmission of genetic material that is not found within the nucleus.
Key Components: Involves genes located in mitochondria, chloroplasts, and plasmids.
Slide 3: Mitochondrial Inheritance
Mitochondria: Organelles responsible for energy production.
Mitochondrial DNA (mtDNA): Circular DNA molecule found in mitochondria.
Inheritance Pattern: Maternally inherited, meaning it is passed from mothers to all their offspring.
Diseases: Examples include Leber’s hereditary optic neuropathy (LHON) and mitochondrial myopathy.
Slide 4: Chloroplast Inheritance
Chloroplasts: Organelles responsible for photosynthesis in plants.
Chloroplast DNA (cpDNA): Circular DNA molecule found in chloroplasts.
Inheritance Pattern: Often maternally inherited in most plants, but can vary in some species.
Examples: Variegation in plants, where leaf color patterns are determined by chloroplast DNA.
Slide 5: Plasmid Inheritance
Plasmids: Small, circular DNA molecules found in bacteria and some eukaryotes.
Features: Can carry antibiotic resistance genes and can be transferred between cells through processes like conjugation.
Significance: Important in biotechnology for gene cloning and genetic engineering.
Slide 6: Mechanisms of Extrachromosomal Inheritance
Non-Mendelian Patterns: Do not follow Mendel’s laws of inheritance.
Cytoplasmic Segregation: During cell division, organelles like mitochondria and chloroplasts are randomly distributed to daughter cells.
Heteroplasmy: Presence of more than one type of organellar genome within a cell, leading to variation in expression.
Slide 7: Examples of Extrachromosomal Inheritance
Four O’clock Plant (Mirabilis jalapa): Shows variegated leaves due to different cpDNA in leaf cells.
Petite Mutants in Yeast: Result from mutations in mitochondrial DNA affecting respiration.
Slide 8: Importance of Extrachromosomal Inheritance
Evolution: Provides insight into the evolution of eukaryotic cells.
Medicine: Understanding mitochondrial inheritance helps in diagnosing and treating mitochondrial diseases.
Agriculture: Chloroplast inheritance can be used in plant breeding and genetic modification.
Slide 9: Recent Research and Advances
Gene Editing: Techniques like CRISPR-Cas9 are being used to edit mitochondrial and chloroplast DNA.
Therapies: Development of mitochondrial replacement therapy (MRT) for preventing mitochondrial diseases.
Slide 10: Conclusion
Summary: Extrachromosomal inheritance involves the transmission of genetic material outside the nucleus and plays a crucial role in genetics, medicine, and biotechnology.
Future Directions: Continued research and technological advancements hold promise for new treatments and applications.
Slide 11: Questions and Discussion
Invite Audience: Open the floor for any questions or further discussion on the topic.
Richard's aventures in two entangled wonderlandsRichard Gill
Since the loophole-free Bell experiments of 2020 and the Nobel prizes in physics of 2022, critics of Bell's work have retreated to the fortress of super-determinism. Now, super-determinism is a derogatory word - it just means "determinism". Palmer, Hance and Hossenfelder argue that quantum mechanics and determinism are not incompatible, using a sophisticated mathematical construction based on a subtle thinning of allowed states and measurements in quantum mechanics, such that what is left appears to make Bell's argument fail, without altering the empirical predictions of quantum mechanics. I think however that it is a smoke screen, and the slogan "lost in math" comes to my mind. I will discuss some other recent disproofs of Bell's theorem using the language of causality based on causal graphs. Causal thinking is also central to law and justice. I will mention surprising connections to my work on serial killer nurse cases, in particular the Dutch case of Lucia de Berk and the current UK case of Lucy Letby.
Comparing Evolved Extractive Text Summary Scores of Bidirectional Encoder Rep...University of Maribor
Slides from:
11th International Conference on Electrical, Electronics and Computer Engineering (IcETRAN), Niš, 3-6 June 2024
Track: Artificial Intelligence
https://www.etran.rs/2024/en/home-english/
Seminar of U.V. Spectroscopy by SAMIR PANDASAMIR PANDA
Spectroscopy is a branch of science dealing the study of interaction of electromagnetic radiation with matter.
Ultraviolet-visible spectroscopy refers to absorption spectroscopy or reflect spectroscopy in the UV-VIS spectral region.
Ultraviolet-visible spectroscopy is an analytical method that can measure the amount of light received by the analyte.
3. Cnidarians can take different forms.
They can take the form of a polyp (i.e. sea
anemones, hydra and coral)
They can also take the form of a medusa (i.e.
jellyfish)
4. Polyps
Polyps are anchored down onto a surface with a
mouth and tentacles on top and a basal disk on the
bottom. (This is why they are commonly mistaken
for plants.)
Sea Anemone Hydra Coral
5. Medusas are not attached to any surface. They are
free-swimming creatures. They have tentacles, like
polyps.
6. All cnidarians have radial symmetry, which
means that they can be cut into two
identical halves by any longitudinal cut
through their center.
Cnidarians have no excretory or respiratory
systems, because their thin epithelial layers
allow for them to release and take in the
things they need.
Cnidarians reproduce sexually and asexually.
7. Cnidarians capture their prey by releasing nematocysts
into their prey. This paralyzes them.
Nematocysts also ward off predators by giving them an
irritating sting.
8. After the nematocysts paralyze the prey,
the cnidarian proceeds to digest it in its gut.
When it has been digested for a while, the
prey is pulled into the inner cells, where the
digestion process is completed.
9. HYDRA
One form of cnidarian is a hydra. A hydra
has tentacles and a mouth at
one end and is anchored by a
basal disk at the other. This
means that it is a polyp.
10. Hydra Reproduction
Hydra reproduce asexually and sexually.
Hydra reproduce asexually by
budding. A small lump forms on the hydra
And grows tentacles. It slowly breaks free
from the original hydra, and a new hydra
is formed.
Hydra can be hermaphroditic, which means
that they have male and female reproductive
organs. They can have both ovaries and
testes, and can release both eggs and sperm into
their surroundings. When these come into contact
with each other, a new hydra is formed.
11. Coral
Another form of cnidarian is coral. Coral
are in polyp form. They attach themselves
to stones and then can form huge coral
reefs when one coral dies and more corals
attach themselves to the dead ones.
12. Coral is actually colorless. Coral provides a home
to many algae, and these give them their wild
colors.
The algae that live on the coral are
photosynthetic, and they provide food for the
coral.
Coral takes up less than 1% of the ocean floor (or
the area of France) but are essential for 25% of
the creatures in the ocean.
13. Another form of cnidarian is jellyfish. Jellyfish
spend part of their life as a polyp and part of their
life as a medusa.
Jellyfish reproduce asexually (via budding) in their
polyp form and sexually in their medusa stage.
Jellyfish in their medusa stage are either male or
female. They can’t be hermaphroditic, like hydra.
14. Jellyfish Reproduction
Sperm is released into the water
and goes into the gut of a
female. This produces a
fertilized egg which grows into a
larva. This grows into a polyp
and the polyp transforms into a
medusa. This then grows into
an adult medusa and the
process begins over again.
15. Jellyfish have no blood or brain!
Jellyfish can be transparent; this is because they
are 90% water!
The largest recorded jellyfish was 7 feet, 6
inches across the top, and its tentacles were 120
feet long. They can be as small as a thimble!
Millions of people live in areas which jellyfish
inhabit. 200,000 people are stung in Florida
annually!
16. The fourth form of cnidarian is the sea anemone. Sea
anemones are in polyp form.
Sea anemones’ nematocysts are chemically triggered.
Sea anemones can reproduce asexually or sexually.
They can be hermaphroditic (containing male and
female reproductive organs) but they can also
reproduce asexually via budding.
17. Sea Anemones have two major symbiotic
relationships. These are relationships in
which one of the two (or +) species
benefits.
The sea anemone has a symbiotic
relationship with algae. It hosts them, and
it gets the byproducts of their
photosynthesis.
The sea anemone also has a symbiotic
relationship with clownfish. The clownfish
have a mucus covering which makes it so
that they are not stung by the anemone’s
nematocysts. They get a home, safe from
predators. The clownfish attracts food for
the anemone.