Radiolarian micropalaeontology: morphology and taxonomy
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This document provides an introduction to radiolarian micropalaeontology, including: 1) An overview of radiolarians, focusing on polycystine radiolarians and their morphology. 2) Descriptions of the general morphology of spumellarian and nassellarian radiolarians. 3) An introduction to some common radiolarian taxonomic forms found in Quaternary studies.
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• Identify the distinguishing characteristics of member of Phylum Cnidaria, including symmetry,
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medusa), place Cnidaria on a cladogram
• Compare and contrast how a general polyp and a medusa feed
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• Label the following on a drawing: tentacles, mouth, anus, gastrovascular cavity, cnidocytes,
nerve net
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• Know what coral bleaching is.
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Solution
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Symmetry : radial or bi radial
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and swimming medusa forms
2. Polyp have single opening surrounded by tentacles this opening act as both mouth and
exceretion. Medusa form has mouth centrally located in a projection called manubrium on the
ventral concave surface
4.Characteristic of four classes of cinidaria:
2. Scyphozoa:
3. Cubozoa:
4. Hydrozoa:
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tissue.
The corals and algae have mutualistic relationship.
Coral provide protection and compound they need for photosynthesis.
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• Identify the distinguishing characteristics of member of Phylum Cn.pdf
• Identify the distinguishing characteristics of member of Phylum Cnidaria, including symmetry,
number of embryonic tissue layers, unique structures, skeleton and polymorphism (polyp and
medusa), place Cnidaria on a cladogram
• Compare and contrast how a general polyp and a medusa feed
• Describe why a nerve net was such a major evolutionary adaptation
• Describe the characteristics of the four classes of Cnidarians
• Label the following on a drawing: tentacles, mouth, anus, gastrovascular cavity, cnidocytes,
nerve net
• Describe the relationship of coral and zoxanthellae
• Name some major threats to coral reefs and why they are so important to biodiversity
• Know what coral bleaching is.
• Know the effects of increased CO2 in the atmosphere and in the water upon corals.
Solution
1.Characteristic of Phylum Cnidaria:
Symmetry : radial or bi radial
number of embryonic tissues: endoderm and ectoderm with body wall separated by mesoglea
They have single opening into the body which act as mouth . There is tubular sessile polyp form
and swimming medusa forms
2. Polyp have single opening surrounded by tentacles this opening act as both mouth and
exceretion. Medusa form has mouth centrally located in a projection called manubrium on the
ventral concave surface
4.Characteristic of four classes of cinidaria:
2. Scyphozoa:
3. Cubozoa:
4. Hydrozoa:
6. Most reef building corals contain photosynthetic algae called zooxanthellae that live in their
tissue.
The corals and algae have mutualistic relationship.
Coral provide protection and compound they need for photosynthesis.
7.Major threat to coral reef is pollution , over fishing which causes ecological imbalance
8. When water is warmer coral will expel the algae [ zooxanthellae ] living in their tissue causing
the coral to turn completely white this is called coral bleaching..
Morphotaxonmy, classification of Radiolaria
Morphology, classification and geological distribution of radiolaria
Chitinozoa
This document provides an overview of Chitinozoa, which are extinct microscopic marine organisms that lived throughout the Paleozoic era. The document discusses their morphology, classification, paleoecology, significance for stratigraphy, and geological history. Chitinozoa tests range in size and have distinctive ornamentation. They are classified based on test characteristics and provide useful biostratigraphic markers. Studies indicate Chitinozoa likely lived as plankton or attached to floating objects in marine environments during the Paleozoic.
Classification of micro fossil theory
Microscopic animal
Microscopic Algae
Bacteria
Microfossil of uncertain effinities
Microfossil elements of smaller animal
Microfossil fragments of larger organism
chapt. 6 Foraminifera - Copy.pptx
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- Their general characteristics as single-celled protists with shells composed of calcium carbonate or agglutinated particles.
- Their classification, morphology (including test structure, chamber shape and arrangement, apertures), ecology, geological history, and applications in biostratigraphy and paleoenvironmental reconstruction.
- Techniques for preparing and observing foraminifera from rock samples depending on the rock type and expected foraminifera.
Radiolarian micropalaeontology: collection and examination
This document provides information on collecting and examining radiolarian microfossils from marine sediments and rocks. It describes how radiolaria can be obtained from plankton samples, seabed sediments, and subsurface sediments collected via coring. It outlines procedures for sampling, processing, mounting, viewing, searching, counting, analyzing, and collating radiolarian data. Statistical techniques can then be used to analyze large radiolarian datasets.
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25.Lung fish, evolutionary history and economic importance
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Impact of Silicon Dioxide Nanoparticle on Fresh Water Fish Clarius Batrachus
Clarias batrachus, a freshwater Indian air breathing catfish is one of the important fish species. It is treated as a typical example to deal with the alimentary canal of a teleost and a test animal in many laboratories of Indian Universities . However, the effect of silicon dioxide nanoparticles on Indian Air breathing fishes is lacking. Therefore, the present work was designed to evaluate the median lethal dose of silicon dioxide nanoparticles on Clarias batrachus. The work will help in deciding the toxicity level of silicon dioxide nanoparticles for the higher yield of this fish. Nanotechnology an advanced tool to synthesis atomic level particles. Increased application of silicon dioxide nanoparticles results in the bioaccumulation of these particles in the environment. The fate and effect of nanomaterials in the environment has raised concern about their environmental risk to aquatic organisms. Silica nanoparticles SiO2 NPs find its uses in various fields and are inevitably released into the environment. However, the ecotoxicological effects of SiO2 NPs on the freshwater fish remain poorly understood. Pooja Shree Somani | Dr. Ranu Sharma "Impact of Silicon Dioxide Nanoparticle on Fresh Water Fish Clarius Batrachus" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-4 , June 2020, URL: https://www.ijtsrd.com/papers/ijtsrd31275.pdf Paper Url :https://www.ijtsrd.com/biological-science/zoology/31275/impact-of-silicon-dioxide-nanoparticle-on-fresh-water-fish-clarius-batrachus/pooja-shree-somani
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This document provides an introduction to trilobites, an extinct group of marine arthropods that lived during the Paleozoic Era. It discusses their anatomy, morphological diversity, ecological roles, evolutionary history, and significance in the fossil record. Key points include:
- Trilobites had a three-part body plan and mineralized exoskeleton that commonly fossilizes. Their anatomy included compound eyes, biramous limbs, and the ability to enroll into a ball.
- They exhibited tremendous morphological variation and filled various ecological niches over 300 million years, with over 20,000 known species. However, mass extinctions negatively impacted their diversity.
- As one of the earliest complex organisms, tr
MH-CET 2014 Practice Test - Biology
MH-CET 2014 Practice Test - Biology, MH-CET 2014, Practice Test - Biology, MH-CET 2014 Biology Preparation
Forensic diatomology
1. Diatoms are single-celled algae with cell walls made of silica. They come in many shapes and sizes and are found in both freshwater and marine environments.
2. Their cell walls are made of two parts called theca that fit together like a box and lid. Locomotion is achieved through the secretion of mucus from structures called raphe.
3. Diatoms are classified based on their cell symmetry and wall ornamentation. They are divided into two main orders - centric diatoms which are radially symmetrical and pennate diatoms which are bilaterally symmetrical.
Post lab pori. cnida, platy, nema and anne
Poriferans are classified into three main classes based on the composition of their spicules:
- Class Calcarea have calcium carbonate spicules and are usually small and vase-shaped.
- Class Hexactinellida have silica spicules with six rays and lack a pinacoderm or gelatinous mesohyll.
- Class Demospongiae contain most species and have siliceous spicules that may be bound by spongin or absent.
Nya lesson plan5
The document outlines a lesson plan for high school students that examines the evolution of whales from land mammals to ocean dwellers through analyzing fossils and constructing a food web. Students will learn about key whale ancestors like Ambulocetus and Basilosaurus that show transitional traits between land and sea mammals. The lesson aims to demonstrate how natural selection led to anatomical adaptations in whales that allowed them to thrive in the ocean environment.
Chap. 7 Radiolaria.pptx
This document discusses radiolaria, which are single-celled eukaryotes commonly found in marine environments. Radiolaria have intricate silica skeletons that can be spherical, cone-shaped, or other forms, sometimes with spines or fins. They live throughout the world's oceans and can be found from the surface to depths of 3000 meters. Their long fossil record and diversity over time make radiolaria useful for determining the age and environment of deposits lacking other fossils. Their classification is based on both skeletal and soft tissue features.
Algae Classification.pptx
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Shane Donaghy (2013) Dissertation (Full Text)
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99_syllabus_BSC_Zoology
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Chapter 2
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Philippine Edukasyong Pantahanan at Pangkabuhayan (EPP) Curriculum
Philippine Edukasyong Pantahanan at Pangkabuhayan (EPP) Curriculum
Radiolarian micropalaeontology: morphology and taxonomy
- 1. Radiolarian Micropalaeontology: Morphology and Taxonomy Professor Simon K. Haslett Centre for Excellence in Learning and Teaching [email_address] 23 rd February 2010
- 4. Spumellarian Morphology 1 a) Cortical shell only, usually with pores. b) Medullary and cortical shells and spines. c) Shells and polar spines that are connected by an external circular ring. d) Medullary and a constricted cortical shell with polar caps.
- 5. Spumellarian Morphology 2 a) discoidal and lenticular forms, with medullary and cortical shells, sometimes with protruding spines. b) spongy shells are common in a number of different forms. c) gated forms occur due to encircling girdles.
- 7. Nassellarian Morphology 2 a) cephalis only (here with some feet). b) cephalis and thorax only (here with large cephalic horns and abdominal feet). c) cephalis, thorax, and abdomen only (with horn). d) as in c) plus one post-abdominal segment e) as in d) plus three or four post-abdominal segments
- 8. Other Morphological Features a) perforate plate pores. b) spongy pores. c) rectangular (left) and polygonal or honey-combed (right) pores. d) circular pores. e) cephalic tube. f) peristome around the aperture. g) teeth around the aperture.
- 10. Collosphaerids
- 14. Dictyocorins
- 15. Spongurins
- 17. Carpocanids
- 18. Eucyrtidins
- 19. Theocalyptrins
- 20. Plectopyramins
- 21. Pterocorids
- 22. Artostrobids
- 23. Cannobotryids