Botany Punjab PMS Paper I 2015

PUNJAB PUBLIC SERVICE COMMISSION
COMBINED COMPETITIVE EXAMINATION FOR
RECRUITING TO THE POSTS OF
PROVINCIAL MANAGEMENT SERVICE, ETC – 2015

SUBJECT BOTANY OPTIONAL PAPER I
TIME ALLOWED: THREE HOURS MAXIMUM MARKS: 100
Note: Attempt any FIVE question in all.

Q No. 1: a) Describe the classification of Algae. Give examples of each algal group.
b) Give an account of general features of Cyanophyta. Discuss the ecological importance of blue green algae. (10 + 10 Marks)

Q No. 2: a) Write down the means of reproduction in fungi.
b) Briefly explain the economic impact of Rust and Smut diseases or major agricultural crops in Pakistan. (12 + 8 Marks)

Q No. 3: a) Differentiate between the sporophytes of liverworts and hornworts.
b) Describe sexual reproduction in Marchantia. (10 + 10 Marks)

Q No. 4: a) Explain the phenomenon of Alternation of Generation in Pteridophytes. What is its significance?
b) Discuss the process of evolution of seed habit in land plants. (12 + 8 Marks)

Q No. 5: a) Cycas is a living fossil. Discuss.
b) Write down the internal structure of leaf of Pinus. What is its ecological importance? (10+ 10 Marks)

Q No. 6: a) Discuss the Rules of International Codes of Botanical Nomenclature.
b) Describe abnormal secondary growth in higher plants. (12 + 8 Marks)

Q No. 7: a) Give the outline of Engler and Prantl system of Classification. What are its merits and demerits?
b) Discuss the anatomical modification in ecologically different plants. (12 + 8 Marks)