作者: 枯萎將要 時(shí)間: 2025-3-21 22:12 作者: synovial-joint 時(shí)間: 2025-3-22 03:13
Animal body cavities,The phyla discussed so far have been characterised by a ‘solid’ type of body construction with either mesogloea or mesenchyme filling the space between the external body wall and the gastrodermis. All the remaining animal phyla have a body cavity separating the body wall from the gut.作者: 先兆 時(shí)間: 2025-3-22 05:53
The invertebrate deuterostomes,euterostome groups: Echinodermata, Chaetognatha, and Hemichor- data. Of these three, the phylum Echinodermata is a large group with a long fossil record and a wide distribution. The others are small and will be discussed together as the lesser deuterostomes.作者: 符合你規(guī)定 時(shí)間: 2025-3-22 11:05 作者: Medicare 時(shí)間: 2025-3-22 13:42 作者: macular-edema 時(shí)間: 2025-3-22 20:07 作者: 厭倦嗎你 時(shí)間: 2025-3-22 21:33
https://doi.org/10.1007/978-3-031-48509-1 and for this a multicellular structure has proved necessary. Subdividing the body mass into a number of smaller parts permits an increase in size for two main reasons. Firstly, the mere presence of cell walls provides some measure of support to the protoplasm, which when unsupported has a fluid con作者: 沙草紙 時(shí)間: 2025-3-23 01:55
,Epilogue: Uncaging Chaucer’s Animal Voice,p between them than with other invertebrate groups and is based on their shared radial symmetry. The term ‘Coelenterata’, commonly used as an alternative to ‘Cnidaria’, is actually synonymous with the term Radiata. Whereas Porifera are multicellular forms which function at a cellular level of organi作者: 芳香一點(diǎn) 時(shí)間: 2025-3-23 09:37
Domesticating the Fable: The Other in the ,tting and waiting rather than active seeking, and locomotion is consequently less important. If an animal has a mouth at one end, and attaches itself by the other, there is no apparent reason why it should not be radially symmetrical since no direction is more important than any other. An essential 作者: 手工藝品 時(shí)間: 2025-3-23 10:53 作者: 甜食 時(shí)間: 2025-3-23 17:30
https://doi.org/10.1007/978-88-470-1062-8mates. There are five major coelomate phyla: Annelida, Arthropoda, Mollusca, Echinodermata and Chordata, with many minor phyla. Apart from their possession of a coelom, all these animals show greater complexity than pseudocoelomate and acoelomate forms. For instance, a through gut and a circulatory 作者: 冥界三河 時(shí)間: 2025-3-23 20:47 作者: 從屬 時(shí)間: 2025-3-23 23:57 作者: AWE 時(shí)間: 2025-3-24 04:28
Niccolò Faccioli,Riccardo Manfredihazardous process involving repeated cell divisions and cell movement to permit organ development and growth. Embryonic development, that is the development of the individual within the fertilized egg, may be a short or lengthy process. A short embryonic stage, which is more usual in invertebrates, 作者: 投射 時(shí)間: 2025-3-24 06:36 作者: 潔凈 時(shí)間: 2025-3-24 11:22 作者: 妨礙議事 時(shí)間: 2025-3-24 17:45
https://doi.org/10.1007/978-88-470-0690-4le the invertebrate fossil record extends back over 1,600 million years, fossils of the earliest vertebrates are only 500 million years old. However, in spite of their relatively recent emergence, chordates have established themselves as one of the major animal phyla, with dominance of the water, la作者: 煩擾 時(shí)間: 2025-3-24 19:13
https://doi.org/10.1007/978-88-470-0690-4eries of small skeletal structures, the vertebrae. These are associated with the notochord during embryonic development but in most cases replace it in adults. Like the notochord the vertebral column functions as an axial supporting rod, but it has the additional function of protecting the nerve cor作者: 釋放 時(shí)間: 2025-3-25 01:18 作者: 掙扎 時(shí)間: 2025-3-25 07:09 作者: 嘮叨 時(shí)間: 2025-3-25 11:14 作者: 蒼白 時(shí)間: 2025-3-25 12:53
ection of zoological terms; these zoology at ‘A‘ level, or in the early stages of a university should be regarded as examples. The interested zoologist course. may find the use of a Greek and Latin dictionary rewarding.978-94-011-6035-3作者: concentrate 時(shí)間: 2025-3-25 17:46 作者: 助記 時(shí)間: 2025-3-25 22:24
https://doi.org/10.1007/978-88-470-0690-4g of the structures he described; for example he believed that arteries contained air and the heart was the seat of intelligence. However the earliest anatomical writings come from Egypt in the Edwin Smith and Ebers Papyri, which were written in about 1600 BC and 1550 BC respectively but themselves 作者: 著名 時(shí)間: 2025-3-26 02:12 作者: 禁止,切斷 時(shí)間: 2025-3-26 08:12
Vertebrate diversity,g of the structures he described; for example he believed that arteries contained air and the heart was the seat of intelligence. However the earliest anatomical writings come from Egypt in the Edwin Smith and Ebers Papyri, which were written in about 1600 BC and 1550 BC respectively but themselves 作者: obnoxious 時(shí)間: 2025-3-26 11:23
Introduction,hen all living things are considered from the smallest to the greatest, superficial distinctions are no longer sufficient and more precise definitions have to be made. Briefly, living things can be recognized by the following characteristics: to a greater or lesser extent all are capable of metaboli作者: cushion 時(shí)間: 2025-3-26 14:34
Phylum Protozoa,d Dutchman became fascinated by a newly invented microscope. Using homemade instruments he carried out a wide range of investigations with varied results. His attempts to observe what puts the heat into pepper or the ‘bang’ into gunpowder failed but he had great success with other studies including 作者: 稀釋前 時(shí)間: 2025-3-26 20:52 作者: expository 時(shí)間: 2025-3-26 21:01 作者: 大喘氣 時(shí)間: 2025-3-27 03:27 作者: LAP 時(shí)間: 2025-3-27 08:30
The pseudocoelomate phyla,ence and of no evolutionary significance. Five phyla (Rotifera, Gastro- tricha, Kinorhyncha, Nematoda and Nematomorpha) whilst not sharing a common plan do show many similarities and may be grouped together as the superphylum Aschelminthes (the cavity worms). The remaining phylum, the Acanthocephala作者: Prologue 時(shí)間: 2025-3-27 12:02
Phylum Annelida,mates. There are five major coelomate phyla: Annelida, Arthropoda, Mollusca, Echinodermata and Chordata, with many minor phyla. Apart from their possession of a coelom, all these animals show greater complexity than pseudocoelomate and acoelomate forms. For instance, a through gut and a circulatory 作者: 他日關(guān)稅重重 時(shí)間: 2025-3-27 14:16
Phylum Arthropoda,,000 known species. The phylum includes 80% of the entire animal kingdom. Within the group there is an amazing range of diversity of both structure and mode of life, with representatives being found in every known habitat. However the total biomass is less than might be expected as the majority of s作者: biopsy 時(shí)間: 2025-3-27 19:59 作者: 動(dòng)脈 時(shí)間: 2025-3-27 22:50
Early embryonic development: the protostomes and deuterostomes,hazardous process involving repeated cell divisions and cell movement to permit organ development and growth. Embryonic development, that is the development of the individual within the fertilized egg, may be a short or lengthy process. A short embryonic stage, which is more usual in invertebrates, 作者: SUGAR 時(shí)間: 2025-3-28 03:32
The minor coelomate phyla,ng from the development of a coelom are represented by these groups. There are many minor phyla, which, whilst they may include a few extremely common species, are generally not abundant in terms of either species or individual number. The majority have neither economic importance nor ecological sig作者: 極微小 時(shí)間: 2025-3-28 09:34 作者: Juvenile 時(shí)間: 2025-3-28 14:12 作者: 破裂 時(shí)間: 2025-3-28 16:37
Introduction to the Subphylum Vertebrata,eries of small skeletal structures, the vertebrae. These are associated with the notochord during embryonic development but in most cases replace it in adults. Like the notochord the vertebral column functions as an axial supporting rod, but it has the additional function of protecting the nerve cor作者: 護(hù)身符 時(shí)間: 2025-3-28 19:50
Vertebrate diversity,us vertebrates have adapted their basic structure at different levels of organization to a variety of different modes of life. Vertebrate zoology is a vast subject with an extensive literature. Since vertebrates include most of the largest and most conspicuous animals, as well as man’s food, and dom作者: 袖章 時(shí)間: 2025-3-29 02:24
Phylum Annelida,system are found in forms such as the nemerteans; however such systems are far more complex in the coelomates, elaboration being due to a large extent to their possession of a coelom. Coelomates also show increasing complexity within their nervous system associated with more elaborate behaviour patterns.作者: Outspoken 時(shí)間: 2025-3-29 06:53
https://doi.org/10.1007/978-88-470-1062-8system are found in forms such as the nemerteans; however such systems are far more complex in the coelomates, elaboration being due to a large extent to their possession of a coelom. Coelomates also show increasing complexity within their nervous system associated with more elaborate behaviour patterns.作者: disparage 時(shí)間: 2025-3-29 09:43 作者: 分解 時(shí)間: 2025-3-29 14:01
: An African-Ecofeminist Reading have to be made. Briefly, living things can be recognized by the following characteristics: to a greater or lesser extent all are capable of metabolism, growth, reproduction, response to stimuli and movement.作者: Cultivate 時(shí)間: 2025-3-29 16:20
,Epilogue: Uncaging Chaucer’s Animal Voice,ive to ‘Cnidaria’, is actually synonymous with the term Radiata. Whereas Porifera are multicellular forms which function at a cellular level of organization, the radiate phyla are more advanced. These phyla function at the cell tissue level, with similar cells aggregated into definite tissues.作者: 細(xì)絲 時(shí)間: 2025-3-29 23:22 作者: GLUT 時(shí)間: 2025-3-30 01:08 作者: Boycott 時(shí)間: 2025-3-30 07:16
https://doi.org/10.1007/978-88-470-0690-4in spite of their relatively recent emergence, chordates have established themselves as one of the major animal phyla, with dominance of the water, land, and air. They cannot rival arthropods in terms of numbers of either species or individuals, but outstrip them in terms of total biomass and ecological dominance.作者: lethal 時(shí)間: 2025-3-30 10:02 作者: 去世 時(shí)間: 2025-3-30 14:28 作者: euphoria 時(shí)間: 2025-3-30 17:57
Radiata,ive to ‘Cnidaria’, is actually synonymous with the term Radiata. Whereas Porifera are multicellular forms which function at a cellular level of organization, the radiate phyla are more advanced. These phyla function at the cell tissue level, with similar cells aggregated into definite tissues.作者: HERTZ 時(shí)間: 2025-3-30 23:11
