Time Allowed: 3 Hours
Max Marks: 100

Note: Attempt only FIVE questions selecting THREE questions from PART I and TWO questions from PART II. All questions carry equal marks.


Q.1. Give an account of polymorphism in coelenterates and describe the economic importance of corals and coral reefs. (20)

Q.2. Compare the contrasting characteristics of general organization in Annelids with those of other higher invertebrates. Highlight the medical importance of leeches. (20)

Q.3. Discuss the various feeding mechanisms in Arthropods and discuss the importance of the insects whose feeding behaviour cause disease and are of medical importance. (20)

Q.4. Discuss the importance of Nematodes in medicine and agriculture. How the parasitic adaptation of Nematode is different from those of platyhelminthes? (20)

Q.5. Describe the specific characteristics of skeleton in phyla of Porifera, Mollusca and Echinodermata pointing out the nature, locations and the functions in each group. (20)


Q.6. Give an account of the specific characteristics of lower chordates. Discuss how each of the character gradually developed in the vertebrates. (20)

Q.7. Reptiles and the birds in vertebrates have adapted to true terrestrial mode of life and have several adaptations to live in this environment. Give a detailed description of all these adaptations specifically referring to different systems e.g. integumentary, respiratory, excretory systems. (20)

Q.8. Give an illustrative description of the mammalian brain. Mention the function of each part of the brain. Also point out which part shows the advancement of its function compared to lower vertebrates. (20)

Q.9. Describe the embryonic membranes in avian egg and mammalian embryo. What are the roles of these membranes in the development process of birds and mammals? Why is the placenta specific to mammals? (20)

__________________
The Me you have always known, the Me that's a stranger still.

Time Allowed: 3 Hours
Max Marks: 100

Note: (i) Attempt only Five questions in all. All questions carry equal marks.
(ii) Candidate must draw two straight lines (==========) at the end to separat each question attempted in the answer books.

Q.1.
a) Give an account the structure and functions of the nucleus. 10
b) Differentiate between Mitosis and Meiosis. What are the various events of Meisis? 10

Q.2.
a) What is Respiraion? Discuss the Glycolysis and Kreb's cycle in the cell. 15
b) Give an account the transportation of O2 in animals. 5

Q.3.
a) What is excretion? Explain the various adoptation in the excretory structure in the animals in accordance to its environment. 10
b) Explain the various kinds of Neuron you have studied and discuss the nerve impulse. 10

Q.4.
a) What are endocrine gland? Enlist the glands you have studied and discuss in detail the thyroid glands and pituitary gland. 10
b) Explain the process of Linkage and crossing over with help of suitable example. 10

Q.5.
a) Explain the Biochemical origin of life on the earth. 10
b) Describe the modern concept of Natural selection. 10


Q.6.
a) What is Biogeochemical cycle? Explain the N2 cycle. 10
b) Explain the Freshwater Pond Ecosystem. 10


Q.7.
a) Give an account the concept of Ecosystem. 5
b) Expalin the various type of chromosomal aberration in the organism. 10
c) Discuss the animals adoptation to their major habitats. 5

__________________
The Me you have always known, the Me that's a stranger still.