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| Number of Questions : 32
Time : 3.00 Hours

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. Who proposed apical cell theory ? Briefly explain its concepts.
. What is ecotone 7 Briefly describe its major properties.
. What is resolving power ? What 15 its property with respect to numerical aperture ?

. What are priones ?
. Define :

(8) Holo type
(b) Lecto type
(£) Para type
(d) Syn type.

. What are tylosoides ? Describe its significances and functions.

. What are the principles of lon exchange chromatography 7

Describe the composition of Carnoy’s fluid. Describe its properties and uses.

‎Write the causative organism of the following diseases.‏ ۔

‎(8) Mahali of Areca-nut
(9) Blast of Paddy
(c) Quick wilt of Pepper
(d) Citrus Canker.

‎Write an account of Fossil Bryophytes.

‎Briefly describe the types of nectaries in plants. What are their significances 7
What are vital stains ? Describe the properties of any 4 vital stains.

‎What is rhizosphere ? Describe its significances.

‎Describe the methods of genetic recombinations in Bacteria.

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‎Max. Marks : 200

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‎Which are the heterosporous pteridophytes ? Comment on the significance of heterospory in

‎development of seed habit.

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‎What is endemism ? Describe its types. Cite three plant species endemic to Western Ghats. (5 Marks)

‎What is speciation ? What are the mechanisms of speciation.

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‎8.7.0.