| Detail | Information |
|---|---|
| Examination | Indian Forest Service (Main) Examination |
| Year | 2020 |
| Conducting Body | UPSC |
| Paper | Botany Paper - I |
| Subject | Botany |
| Duration | Three Hours |
| Maximum Marks | 200 |
| Number of Questions | 8 |
| Question Type | Mixed |
This is the Botany Paper - I from the Indian Forest Service (Main) Examination, 2020, conducted by UPSC. The paper carries a maximum of 200 marks and candidates are allowed three hours to complete it. It consists of eight questions, of which five are compulsory, including questions 1 and 5. Candidates must attempt at least one question from each of the two sections (A and B) from the remaining six questions. This paper is crucial for aspirants aiming for a career in forestry through the IFS examination, providing insights into the types of questions asked and the depth of knowledge required in Botany.
Section A
(a) How can algae be used in sewage treatment?
(b) With a labelled sketch describe the ultrastructure of bacterial flagella. Describe its mechanism of movement.
(c) Explain in detail the process of fertilization in Angiosperms.
(d) Describe and differentiate heterocyst cell from blue-green algal cell.
(e) Deuteromycotina has been called "Waste Basket Assemblage." — Substantiate.
Section A
(a) Describe the stelar organization and evolution in Pteridophytes.
(b) Describe the life cycle of the pathogen causing damping-off of seedlings of tobacco and tomato.
(c) Describe the mechanism and benefits of parasexuality.
Section A
(a) Discuss the three kinds of mycelia encountered in Basidiomycetes. With suitable diagrams bring out the significance of clamp connection.
(b) Trace the evolution of sporophytes in Bryophytes with neat labelled sketches only.
(c) What are Antibiotics ? Describe the mode of action of aminoglycosides.
Section A
(a) Name the organisms causing black, yellow and brown rust of wheat. Describe the symptoms of black rust of wheat and the life cycle of the pathogen causing it.
(b) What do you mean by genetic recombination ? Describe different methods of bacterial recombination.
(c) What is dissemination of disease ? Describe methods of plant virus dissemination in brief.
Scanned pages 1–2 for reference. Download the official PDF for the full paper.
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The exam is the Indian Forest Service (Main) Examination, 2020.
This is Botany Paper - I.
The Union Public Service Commission (UPSC) conducts the Indian Forest Service Examination.
The maximum marks for Botany Paper - I is 200.
The time allowed for Botany Paper - I is Three Hours.
The paper code is JKLO-U-BTN.