Answer each question in about 50 words. Each question carries 5 marks.
1.
Give the structure of Antibody molecules.
Differentiate between rust and white rust.
Give a brief account on importance of Algae In food and fuel.
Explain the structure of seed of Monocots.

PARTB 1Ox10=100 Answer each question in about 100 words. Each question carries 10 marks.

2. Describe microbes useful for agriculture.

3. With suitable diagrams, list out the differences between xylem of Gymnosperms and Angiosperms.

4. Describe different types of ovules with diagrams.

5. Describe types of sexual reproduction in Algae.

6. Describe economic importance of different plants belonging to Malvaceae.

7. Describe micropropagation of banana.

8. List 3 pteridophytes and structure of sorus in these plants.

9. Give the structure of bacterial cell wall and methods of its staining.

10. Describe in detail black stem rust of wheat.

11. Describe the Ergot (Claviceps purpurea) formation in rye

12. Describe the Structure of conidial head in Aspergillus.


PARTe 6x15=90 Answer each question in about 150 wards. Each question carries 15 marks.

12. Write a note on anatomical features of C4 plants.

13. Why is it not advisable to consume degraded cereals or pulses? Add a note on toxins produced by Aspergillus species.

14. Write a note on interactions between antigens and antodies.

15. What do you understand by rPM Describe biological control of pathogens.

16. Describe types and uses of different types of endosperms.

17. Describe and draw the internal structure of leaves of Cyeas and Pinus.

PARTD 3x30=90 Answer any three Df the following questions. each in about 300 words. Each carries 30 marks.

18.Describe wart disease of potato in detail. How is it limited to a district in West Bengal only?

19. Mention the causal organism, symptom and control measure of the following plant diseases TMV Brown rust of wheat Red rot of sugarcane Sandal spike Tikka disease of graunduut

20. What is the role of Rhizobium III leguminous plants Describe the penetration of bacteria in roots..

21. Give the salient features of following families, add a note on floral characters and economic importance of any 2 plants in each family Gramineae (Apiaceae) Solanaceae Cucurbitaceae

22. Differentiate the following, giving suitable examples


Apogamy and Apospory
Leptosporangiate and Eusporangiate ferns
Liverworts and Hornworts
Pycnoxylic and Manoxylic wood
Simple and Aggregate fruits



Answer each question in about 50 words. Each question carries 5 marks.
1.
Write a brief note on morphology and functions of chloroplast.
What do you understand by karyotype and ideogram
Describe different uses of osmosis to the plants.
Describe three drug yielding plants (Obtained from leaves).

Answer each question in about 100 words. Each question carries 10 marks;

2. Describe fluid mosaic model of biological membrane.

3. Describe different stages of mitosis in detail.

4. Write a note on characteristics of community.

5. How can you control the water pollution?

6. Write about the action of enzyme with the substrate.

7. Write a note on biological tools of genetic engineering.

8. Write a note on plants which are used as pesticides.

9. Write any five oil yielding plants. What is Biodiesel

10. What is seed dormancy? Write any two methods which are used to break the seed dormancy.

11. Write a note on structure and functions of lysosomes.


Answer each question in about 150 words. Each question carries 15 marks.

12. Describe the C4 cycle of photosynthesis.

13. Write a note on morphology and ultrastructure of endoplasmic reticulum.

14. Explain-Photoperiodism.

15. Why is the soil conservation required? Explain.

16. Give the classification of mutation based on the origin and add a note on mutagens.

17. Describe characteristics of genetic code. Add a note on nonsense cadons.


Answer any three of the following questions, each about 300 words.
Each question carries 30 marks.

18. Differentiate between a disease and disorder. How we can control mineral deficiency caused due to Fe and Zn

19. Describe the role of auxms and their application In agriculture horticulture.

20. Describe the kinds of linkage with suitable examples.

21. Describe the causes and basic types of succession.

22. Explain aneuploidy in detail with suitable examples.