B.Sc. Part-III Botany Questions in English

        B.Sc. (Part-III) EXAMINATION, 2010

BOTANY

First Paper

(Ecology and Photogeography)

Time Allowed : Three hours                 .                                                          Maximum marks : 50
प्रश्न-पत्र 5 इकाइयों में विभक्त है । प्रत्येक इकाई में दो प्रश्न हैं । प्रत्येक इकाई से एक प्रशन का अनिवार्यतः चयन करते हुए, कुल पांच प्रश्नों के उत्तर दीजिए । सभी प्रश्नों के अंक समान है । प्रत्येक प्रश्न के भाग (a) तथा (b) एक-एक अंक के हैं तथा इन भागों के उत्तरों की सीमा 20 शब्द तक है ।भाग (c) व (d) दो-दो अंकों के हैं तथा उनका उत्तर अधिकतम 75 शब्दों में देने हैं । भाग (e)  चार अंको का है तथा इसका उत्तर 300 शब्दों में देना है। निर्धारित की सीमा से अधिक शब्दों में उत्तर लिखने पर परीक्षक 5% अंक काट सकेगा, नामांकित  चित्रों के प्रश्नों हेतु शब्द सीमा लागू नहीं होगी ।

Unit-I

1.(a) Define the synecology.
(b) What is the ecosphere ?
(c) Give labelled diagram of Pyramids of Biomass.
(d) Write short note on "Homoeostatic system."
(e) Write an essay on "Soil organic matter."

2. .(a) What is 'Esturene Ecology'.
(b) Write about 'Capillary water.'
(c) Draw a Biochemical cycle of Nitrogen.
(d) Write short note on "Abiotic component" of Ecosystem.
(e) Give definition and detailed description  of various types  of food chain.

Unit-II

3. (a) Define secondary succession.
(b) What do you mean by 'Plant community.'
(c) Differentiate between primary productivity and secondary productivity.
(d) Write a short note on socio-ability or Gregariousness.
(e) Write in detail about Raunkraer's 'Lite forms.'

4. (a) Define 'Lithosere.'
(b) What is stratification or layering ?
(c) Write names of pioneer plants of psammosere.
(d) Give "Bomb colorimeter" method for measurement of primary productivity.
(e) Write an essay on various steps of plant succession.

Unit-III

5. (a) Define pollution.
(b) Name any two 'Endangered plants' of Rajasthan.
(c) Write control measures of 'water pollution'.
(d) Write a short note on 'Green house effect'.
(e) Write in detail about 'Red data book'.

6. (a) Write names of any two 'wild life sancturies' of Rajasthan.
(b) Names any two 'National parks' present in Rajasthan.
(c) What is 'Acid Rain' ?
(d) Write a short note on pollutants.
(e) Write in detail with examples about 'Renewable and non-renewable resources'.

Unit-IV

7. (a) Wrie about 'Sand Binders'.
(b) Names any two Amphibians plants.
(c) Draw labelled diagram of T.S. stem of hydrilla.
(d) Write short note on 'Ephemerals'.
(e) Write in detail on 'different adaptations' in halophytes.

8. (a) Names any two 'Submerged hydrophytes'.
(b) What are 'Floating bid rooted hydrophytes'.
(c) Write a short note on desert climate.
(d) Write about 'Vegetation of Rajasthan'.
(e) What is plant adaptation ? Describe morphological and anatomical adaptation in Xerophytes.

Unit-V

9. (a) Define biodiversity.
(b) What is cosmopolitan distribution ?
(c) Write a short note on ' Gondwana land concept'.
(d) What do you know about 'Gangetic plains'.
(e) What is 'Endenism' ? Explain the causing factors of Endenism.

10. (a) Define phytogeography.
(b) What are plants Indicators ? Write the names of two plant indicators.
(c) Write a short note on 'Alpine zone'.
(d) Write about geographical position of west coast of Malabar. Write about vegetation of this area.
(e) Write about geographical position, surface, climate and soils of Rajasthan,

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