Weekly Environment and Ecology

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Environment & Ecology JULY Week-1

Nipah virus The Nipah virus infection is a newly emerging  zoonosis , that is, a disease transmitted from animals to humans  as stated by the WHO . The virus belongs to a new genus termed Henipavirus (subfamily Paramyxovirinae). It was first reported in 1998 at  Kampung Sungai Nipah  village, Malaysia. So virus is named after this village. The natural host of the virus are  fruit bats (Pteropus giganteus)  belonging to the family Pteropodidae.  In 2004, humans were affected after eating the date palm contaminated by infected fruit bats. Pigs can also act as intermediate hosts. Natural host  are those animals in which pathogens reside naturally and not infecting them. Here they grows upto a certain stage of their life cycle. Intermediate hosts  are those in which pathogens reside and not causing harm to them and here they are in inactive state i.e not growing further. Primary host  are those in which pathogens...
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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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Evolution Book By Futuyma, D. J.

An overview of evolutionary biology, concept of organic evolution during pre- and post- Darwin era; evolution and molecular biology- a new synthesis; from molecules to life, life originated from RNA, introns as ancient component of genes. Get the Latest concepts and development in field of evolution.             Click here to Download                                               Download
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Questions for 23 July Zoology

Q:-1 Describe the general characters of Phylum Echinodermata and classify the phylum upto subclasses. (20) Q:-2 What is repressor? Explain the trp operon and compare it with lac operon. (20) Q:-3 What is chromatin modification? How it is mediated? Discuss its role in gene regulation. (15) Q:-4 Describe the various larval forms in phylum Echinodermata. Explain their significance also. (20) Q:-5 What is water vascular system? Briefly explain the mechanism of respiration in Echinodermata. (15)
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Questions for 30 july zoology

Q:-1 Discuss the origin of mammals and briefly explain adaptations of aquatic mammals. (20) Q:-2 Give the anatomical features of pituitary gland. Describe its secretions regulating other endocrine glands with feedback mechanism. (15) Q:-3 Compare the features monotremata and marsupials. How they are different from primates. (15) Q:-4 What is speciation? How natural selection operates? (10) Q:-5 Define isolation. Give various isolation mechanism and describe how they are contributing to speciation? (20) Q:-6 Compare the Batesian and Mullerian mimicry. Discuss evolutionary significance of mimicry. (20)
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