1st year 1st Semester Examination, Session-2005-06
Title – Forest Botany
Course No. FOR-111,
Credit: 3, Total Marks-75, Time: 3 hours
Dept. of Forestry and Environmental Science,
Shah Jalal University of Science And Technology, Sylhet, Bangladesh
1. Question no.7 is compulsory. Answer other 4 questions from the rest 6.
2. Answer should be written in separate answer script for each section.
1. a) Write short note on any two of the following:
i. Gene mutation
ii. Linkage and crossing over
iii. Stomata
iv. Genetics vs. Plant breeding.
2. a) Write the importance of studying
o Cytology
o Microbiology
o Palaeobotany.
b) Write the importance of pollination in forest trees?
c) Write the merits of cross pollination over self pollination. Which of the two is preferred in forestry from genetically point of view?
d) Narrate the agents of pollination citing examples from forest trees.
3. a) Describe the process of fertilization of higher plants. Draw necessary sketch.
b) Why dispersal of fruits and seeds are important in forestry?
c) What adaptation are observed in fruits and seeds of forest trees for dispersal?
4. a) What are the common ecological plant groups? Write the adaptive morphological characteristics of Xerophytic plant group.
b) What are mangroves? Write the special adaptations of halophytes with their environment.
c) What do you mean by vascular bundle? Describe different types of vascular bundles with necessary sketches?
5. a) What do you mean by the secondary growth? Write the process of secondary growth of vascular dicot stem.
b) Write the significance of meiotic cell division.
c) Distinguish between DNA and RNA.
6 a) Draw a sketch of typical plant cell and level different parts of it.
b) What are the objectives of plant breeding?
c) What are the economic importance of poliploides?
7. a) Narrate the structure of a DNA molecule with.
b) Describe Mandel’s law of independent assortment of inheritance.
