Download Original PDF
Get the official Barkatullah University print version scanned document.
đ¤ Help Your Juniors!
Have previous year question papers that aren't on our website? Help the next batch of students by sending them to us! With your consent, we will proudly feature your name as a Top Contributor on our platform.
Submit Papers đŠRoll No. ..........................
Choose the correct answer :
Total No. of Questions : 11]
[Total No. of Printed Pages : 06
RL-160
B.Sc.-B.Ed. (Secondary) (New) (RIE)
Examination, 2025
(Third Semester)
BOTANY
DC-VII
Plant Ecology and Phytogeography
(Major)
Time : 3 Hours]
[Maximum Marks : 60
Note : All Sections are compulsory.
Section A
(Multiple Choice Questions)
Note : Attempt all questions.
5Ã1=5
(i) Plants found on acid soils are designated as :
(a) Lithophytes
(b) Oxylophytes
(c) Halophytes
(d) None of the above
(ii) Commensalism is a relationship between organisms where :
(a) One species of a pair benefits
(b) Both organisms benefit
(c) Both species affect each other
(d) None of the above
(iii) Ecotone is characterized by :
(a) Presence of greater number of species
(b) Higher density of species
(c) Intermixing of species
(d) All of the above
(iv) Carbon dioxide fixation by green plants and algae occurs in :
(a) Nitrogen cycle
(b) Phosphorus cycle
(c) Carbon cycle
(d) None of the above
(v) Endemism occurs due to :
(a) Poor adaptability of species
(b) Presence of geographical barriers
(c) Lack of potential to migrate barriers
(d) All of the above
Section B
5Ã3=15
(Short Answer Type Questions)
Note : Attempt all questions. All questions carry equal marks.
Origin of Soil
Or
Hydrological cycle
Effect of fire on plants
Or
Ecological pyramids of numbers
Ecological speciation
Or
stages of xerosere
Productivity of ecosystem
Or
Significance of carbon cycle
Continental drift
Or
A brief note on endemism.
Section C
5Ã8=40
(Long Answer Type Questions)
Note : Attempt all questions. All questions carry equal marks.
Describe the importance of physical, chemical and biological components of soil to plants.
Or
Describe the importance of water to plants and discuss states of water in the soil.
Describe adaptations of plants to light intensity.
Or
Illustrate food chains and webs and their significance.
Describe characters of community highlighting quantitative and qualitative characters.
Or
Illustrate different stages of hydrosere and its significance.
Illustrate principles and models of energy flow.
Or
Describe the biochemical events of nitrogen cycle.
Describe the major biomes and their characteristics plant species.
Or
Illustrate phytogeographical regions of India and their characteristics plant species.