Botany KP PMS Paper II 2008

Khyber Pakhtunkhwa Public Service Commission, Peshawar
Competitive Examination for the posts of Provincial Management Service (BPS-17) – 2008

Botany Paper II

Time Allowed: 03 Hours
Max Marks: 100

Note: Attempt any five questions.

I What are the morphological and biochemical adaptations of CAM plants that help them survive in the desert? (20)

II How do plant hormones differ from animal hormones? Describe the physiological effects of ethylene in plants. (20)

III Discuss various edaphic and biotic factors in relation to plant growth. (20)

IV (a) What is plant succession? Give detailed account of plant succession starting in a lake. (10)
(b) Write a note on “pollution and conservation of natural resources”. (10)

V Describe ultrastructure of cell membrane and chloroplast along with suitable illustrations. (20)

VI Each gene must have a structure that allows controlling substances to recognize the gene, bind to it, and activate it at proper time”. Elaborate the statement. (20)

VII What is gene mutation? Give a critical account of various types of mutations and their significance. (20)