UPSC IFS 2018 Question Paper for Botany Paper - I

T R. EXAM-V 2018 FSI-P-BTN
EXAM-p) 2018 BOTANY
Paper - I
Time Allowed: Three Hours Maximum Marks : 200

Question Paper Specific Instructions

Please read each of the following instructions carefully before attempting
questions:

There are EIGHT questions in all, out of which FIVE are to be attempted.

Questions no. 1 and 5 are compulsory. Out of the remaining SIX questions, THREE are to
Se attempted selecting at least ONE question from each of the two Sections A and B.

Attempts of questions shall be counted in sequential order. Unless struck off attempt of a
question shall be counted even if attempted partly. Any page or portion of the page left
blank in the Question-cum-Answer Booklet must be clearly struck off

All questions carry equal marks. The number of marks carried by a question/part is
indicated against it.

Answers must be written in ENGLISH only.

Neat sketches may be drawn, wherever required.

SECTION A

Ql. Answer the following keeping your answers brief and to the
point. 8x5=40

Distinguish between Bacteria and Archaea. 8

Comment on why Albugo candida and Phytophthora infestans are not
considered as fungi. 8

Distinguish between Chlorophyta and Rhodophyta. 8

What is Peristome ? Describe its formation and role. 2+6=8

What are coralloid roots ? Where are these found and what important
role do they play? 4+1+3=8
PSI-P-8 TN 1

Q2. (a) Compare loose smut with covered smut of wheat plants on the basis of
symptoms, casual organism, disease cycle and disease management.
5+5+5=15

Describe the evolutionary significance of various stellar structures found
in Pteridophytes. Give one suitable example in each case. 10+5=15

Describe the diversity of photosynthetic pigments found in the major
classes of Algae. 10

Q3. (a) What are the recent developments in the use of microbes in industrial
products ? Why do microbes serve as most ideal organisms in industrial
applications? 8+7=15

Explain the progressive sterilization of potentially sporogenous tissue
found in Bryophyta. Add a note on the role of elaters. 5+5=10

Describe the structure and chemical composition of TMV. How does it
infect the host? 10+5=15

Q4. (a) Describe the organization of female cone in Pinus. Discuss on the
morphological nature of ovuliferous scale. 10+5=15

Comment on how far Selaginella advances towards seed habit. 10

What is Systemic Acquired Resistance (SAR) ? Discuss the role of
salicylic acid in SAR. 7+8=15

FSI-P-BTN 2

SECTION B

Q5. Answer the following keeping your answers brief and to the
point. 8x5=40
How do you justify Asteraceae as a phylogenetically advanced family in
dicotyledons? 8
Explain 'Nemec phenomenon' and its significance. 8
What are cortical vascular bundles ? How are they formed? 3+5=8
Discuss the role of Botanical Gardens in conservation of plants. 8
What is haploid cell culture ? How is this technique useful in
agriculture? 8

Q6. (a) Give an account of Cronquist's classification of flowering plants. Add a
note on merits and demerits of this system of classification. 10+5=15

What is totipotency ? Give an experimental evidence to demonstrate
it. 5+10=15

What is Helobial type of endosperm ? Describe the process of its
development. 4+6=10

Q7. (a) What is polyembryony ? How is it induced ? Discuss its
applications. 5+5+5=15

(b) Write the botanical name of the plants, their family, economically
important plant parts and uses for the following:
Cinnamon
Clove
Saffron
Nutmeg
Lesser Cardamom 15

(c) Compare the floral characters of Malvaceae and Solanaceae. Give the
floral diagrams of the two families. 5+5=10
F5I-P-8TN 3

Q8. (a) Name the four types of tea recognized in the trade. What are their
properties and methods of processing? 2+6+7=15
Describe the organization of essential organs of Asclepiadaceae family.
Discuss the pollination mechanism in it 6+9=15
Give an account on hydrocarbon plants and their potential as a source of
sustainable energy. 10

FSI-P-STN 4