1
12 Marks150 Wordsmedium
Draw labelled sketches of Alima and Phyllosoma larvae. Identify the neuro-endocrine factors that cause metamorphic changes in them.
2
12 Marks150 Wordsmedium
Compare the structure and function of uricotelic and ureotelic kidney with suitable examples and diagrams.
3
12 Marks150 Wordsmedium
Differentiate between pheromones and hormones. How do they help in communication and behaviour?
4
12 Marks150 Wordsmedium
What are the evidences against the traditional concept that pituitary gland is the 'master of endocrine orchestra'? Highlight the current concept on this endocrine gland.
5
12 Marks150 Wordsmedium
“Birds are glorified reptiles.” Justify the statement.
6
20 Marksmedium
Give an illustrated account of interaction of neuroendocrine secretions in promoting metamorphosis in an orthopteran and a lepidopteran insect. Mention the type of metamorphosis that these insects undergo.
7
20 Marksmedium
What is torsion? How does it occur in certain gastropods? Give an illustrated account of torsion and detorsion in this molluscan class.
8
20 Marksmedium
Enumerate the anatomical and physiological changes that occur in a venous heart during vertebrate evolution leading to emergence of heart with separate chambers for arterial and venous blood and a pacesetter mechanism.
9
30 Marksmedium
Draw a labelled diagram of hypothalamohypophyseal ovarian axis, and comment on the following :
(i) Effect of photoperiod
(ii) Role of hormones in ovarian cycle
(iii) Feedback regulation of hormonal cycle
10
30 Marksmedium
Compare the tornaria larva of Balanoglossus with bipinnaria larva of echinoderm. Give reasons for including Hemichordata as a distinct phylum of invertebrates.
11
20 Marksmedium
Fasciola, Taenia and Ascaris are adapted to parasitic mode of life. Define the convergent and divergent strategies employed by these parasites for successful existence and propagation.
12
20 Marksmedium
Differentiate among anapsid, diapsid and synapsid reptiles. Give examples.
13
20 Marksmedium
Differentiate between structure and functions of parathyroid hormone and thyroid gland hormones.
14
60 Marks150 Wordsmedium
Answer the following in about 150 words each :
15
12 Marks150 Wordsmedium
Draw diagrams to differentiate between ecological pyramids based on predator-prey relationship and energy flow in an ecological niche.
16
12 Marks150 Wordsmedium
What are the merits of remote sensing in sustainable development? Give examples.
17
12 Marks150 Wordsmedium
With suitable examples and diagrams, explain the concept of ecological succession.
18
12 Marks150 Wordsmedium
How is the degree of freedom calculated in a chi-square analysis? Use a graph to convert x²-values to p-values.
19
12 Marks150 Wordsmedium
Compare the social organization of termites and honeybees.
20
20 Marksmedium
Differentiate between conditioning and habituation with suitable examples from primates and rodents.
21
20 Marksmedium
What is biological clock and how does it function? Discuss the role of intrinsic and extrinsic factors in its entrainment.
22
20 Marksmedium
Delineate the principal steps in initiating sericulture. Add a note on various aspects of rearing techniques to get quality product in sericulture.
23
20 Marksmedium
Discuss the role of biotechnology in forensic science giving suitable examples.
24
20 Marksmedium
Identify and write the characteristics of ectoparasites of cattles. Describe the symptoms of their infection and ways to treat them.
25
20 Marksmedium
How do animals navigate in the dark? Use owl and chiropterans as examples, and highlight the features of their navigational sensory equipment.
26
15 Marksmedium
With suitable example(s), enumerate the method for conducting one-way and two-way F-tests.
27
15 Marksmedium
What is PCR? Give an illustrated account of various steps of this technique in DNA amplification.
28
15 Marksmedium
Tabulate the differences among prototherians, metatherians and eutherians with suitable examples.
29
15 Marksmedium
Describe the role of liver and endocrine pancreas in blood-glucose regulation.