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CANAL SYSTEM IN Porifera

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Canal system in Porifera (sponges) Body of all sponges is the perforated by large number of apertures through which water enters Inside body and flows through a system of criss-crossing canals collectively forming the canal system which is a characteristic feature of poriferans. Following types of canal systems are found in sponges: Ascon type, with flagellated spongocoel Sycon type, with flagellated radial canals Leucon type, with flagellated chambers Rhagon type, with conical shape and broad base ASCON TYPE This is the simplest type of canal system and is found in  Leucosolenia  and other homocoela. Ostia are present on the surface of body and lead directly into the spongocoel, which is lined by flagellated choanocyte cells. Spongocoel opens to the outside through a narrow circular opening, the  osculum  located at the distal free end of the sponge body. Water enters through ostia into spongocoel and goes out of body through the  osculum . SYCO...
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Questions for 10 July 2018 Zoology

Q:-1 What is nucleic acid? Discuss their chemical structure. (15) Q:-2 Discuss various types of Motifs. Comment on their significance. (15) Q:-3 What is the defensive structure of cnidarians? Discuss its structure with suitable diagrams. Add note on their significance. (20) Q:-4 Discuss the features of Cnidarians. Classify the phylum with suitable examples. (20) Q:-5 What is coral reef? Discuss the anthropogenic implications on them. Give their various theories of origin. (20)
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Animal physiology. Adaptation and Environment

GET Animal physiology. Adaptation and Environment Author(s): Knut Schmidt-Nielsen Description: This book is about animals and their problems. It is not only about how animals function, but about the problems of living and how animals solve them. It is also about aspects of physiology that I find particularly fascinating or interesting. The book is written for the student who wants to know what animals do and how they do it. The text deals with the familiar subjects of physiology: respiration, circulation, digestion, and soon. These subjects are treated in thirteen chapters, arranged according to major environmental features: oxygen, food and energy, temperature, and water. I consider this arrangement important, for there is no way to be a good physiologist, or a good biologist for that matter, without understanding how living organisms function in their environment. The book is elementary and the needed background is minimal. The first edition of Animal Physiology has been wi...
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Anthropology test Week 3

                             Week-3 Instructions:- There are Seven questions divided in Two sections. All questions are compulsory. Adhere to world limit wherever specified. The number of marks carried by a question is indicated against it.                              Paper I Q:-1 Write Notes on the following in about 150 words each: (10X5 =50) a) Phratry b) Society and culture c) Lineage and clan d) Insect taboo e) Cultural relativism Q:-2 Discuss the cardinal points of descents and culture. Explain segmentary lineage and territoriality. (20) Q:-3 Explain various types of marriages in Vedic culture. How various cultural and awakening movements influenced the institutional form of marriages. (20) Q:-4 Discuss various laws of succession in India.  What is the impact of industrialization on Famili...
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Anthropology test week 4

Week-4 Instructions:- There are Eight questions divided in Two sections. All questions are compulsory. Adhere to world limit wherever specified. The number of marks carried by a question is indicated against it.                              Paper I Q:-1 Write Notes on the following in about 150 words each: (10X5 =50) a) Monotheism and Religion b) Neo-evolutionism c) Language d) Structural functionalism e) Totemism Q:-2 Give the various anthropological theories. Whic theory is most relevant in term of defining society and why? (20) ing Q:-3 Discuss the concept of people's participation in planned development. (10) Q:-4 (a) In what ways economics and economic anthropology differs. (10) (b) Bring out the contribution of Tyler and Conklin in development of cognitive theory. (15) (c) Give the various tools of data collection and interpretation. Why is data analysis important in anthropology? (20) ...
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