Q:-1 Explain the metamorphosis in Urochordata. Discuss its peculiar systematic position and affinity with invertebrates. (20) Q:-2 Give the affinity and characteristic features of Balanoglossus. (15) Q:-3 What is neurotransmitter? Explain is signalling mechanism. Describe various types of signalling molecules. (20) Q:-4 What is apoptosis? Describe the role of Bcl-2 family in apoptosis. How mitochondria is regulating process of apoptosis? (15+5) Q:-5 Discuss the implications of impaired signalling pathways. How biotechnology can play a role in it? Describe any one common congenital disorder due to impaired functioning of Signalling pathway. (20)
Q:-1 What is dosage compensation? Explain lyonnhypothesis. Discuss its significance. (20) Q:-2 Discuss the sex determination process in Drosophila. How it is different from humans. (15) Q:-3 Describe the molecular mechanism of sex determination in human. Comment on evolution of Y chromosome in mammals. (20) Q:-4 What are anadromous fishes? How their migration process different from catadromous fishes. Describe the significance of migration. (20) Q:-5 Discuss the process of osmoregulation in pieces. Describe their respiration in brief. (15)
"Invertebrates" 2nd edition presents a modern survey of the 34 animal phyla (plus the Protista) and serves as both a college course text and a reference on invertebrate biology. It is organized around the themes of bauplans (body plans) and evolution (phylogenetics). Detailed classifications, phylogenetic trees, and references for all phyla are provided. The text is accompanied by detailed line drawings and - new to this edition - four-colour photographs. Other key changes from the 1st edition (1990) include: the incorporation of all the new developments in phylogenetics, developmental biology and molecular genetics; major changes at the highest levels among the invertebrates; three phyla that appeared in the original book Pentastomida, Pogonophora and Vestimentifera no longer exist, and an entire new phylum, Cycliophora, has been erected. Moreover, this edition discusses recent work in molecular systematics, and there is a large new section on "Kingdom Protista" (...
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...
Guidelines cum Instructions for Daily Answer Writing Daily 5 to 7 questions will be posted around 11.30 pm No question on Sunday Instructions · All questions are compulsory. · Adhere to world limits wherever specified. · Draw neat and well labelled diagrams. No beautification required. · Don’t use colour pens only pencil colour if you are an extraordinary student. · Try to finish all questions within 2 hours in written. · Answers will be reviewed every day at 9 pm. Questions DAY 01- 3rd July 2018 Q:-1 Discuss The followings 250 words (10x4) Binomial nomenclature various types of coelom Receptor mediated Endocytosis Theories of origin of Bilatria AND Radiata ...
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