Soil science important questions  and solution. Soil science question for BSc Botany students or Botany Degree students. Soil Science Suggestions.  Soil science is the study of soil as a natural resource on the surface of the Earth including soil formation, classification and mapping; physical, chemical, biological, and fertility properties of soils; and these properties in relation to the use and management of soils.

  • Soil Science Important Questions
  • Soil science important questions for botany students 
  • Soil science questions and answers 
  • Soil Science Suggestions 
  • Soil science question solution


First Year B.Sc. (Honours) Examination 2019
Course No. BOT. 107
Course Title: Soil Science
Department of Botany
University of Chittagong
Full Marks: 50
Time: 3 hours
[Answer any FIVE questions. Figures in the right margin indicate full
marks. Give labeled diagram(s) wherever necessary. All parts of each
question must be answered subsequently.]

1. (a) Define soil.
(b) Soil is a medium of plant growth- explain.
(c) Write the importance of studying soil science in Botany.

2. (a) What is soil profile?
(b) Draw an ideal soil profile.
(c) Briefly discuss the characteristics of master horizons of soil.

3. (a) Define soil colloid.
(b) Mention the general properties of soil colloid.
(c) 'All productive soils are fertile but all fertile soils are not
productive'- explain

4. (a) Define weathering.
(b) Write differences between chemical and physical weathering.
(c) What do you mean by soil structure? Name the types of soil
structure.
(d) Write down the agricultural significance of soil structure.

5. (a). Why is soil texture so important?
(b) Describe major soil texture classes.
(c) Write the important properties of sand, silt and clay particles.
(d) Classify soil separates according to their size as proposed by
USDA and ISSS.

6. (a) Why is over irrigation harmful?
(b) What is field capacity water content? How various factors
influence it?
(c) Describe the physical classification of soil water.
(d) Write the importance of soil water in agriculture.

7. (a) Define soil organic matter.
(b) Give the composition of soil organic matter.
(c) Describe the sources of organic matter in soil.
(d) Describe the effects of organic matter on physical, chemical
and biological properties of soil.

8. Write notes on:
(a) Soil pH;
(b) Types of soil erosion;
(c) Conservation of soil and
(d) Seven soil tracts of Bangladesh.

First Year B.Sc. (Honours) Examination 2018
Department of Botany
University of Chittagong
Course No. Bot. 107
Course Title: Soil Science
Time: 3 hours
Marks: 50
[Answer any five questions. Figures on the right margin indicate full marks. Give
labeled diagrams wherever necessary. All parts of each question should be
answered subsequently.]

1. (a) Distinguish between the land and soil.
(b) Discuss the volume composition of soil with a pie chart.
(c) Soil is a natural body - Explain.

2. (a) Define minerals.
(b) State the classification of rocks.
(c) What is soil profile? Briefly discuss the five soil forming factors.
3. (a) Differentiate between the soil texture and structure.
(b) Give a list of different plant nutrients present in soil.
(C) Clarify the nitrification, denitrification and biological nitrogen
fixation.

4. (a) Discuss the different forms of water.
(b) What is field capacity?
(c) Point out the problems of water stress and water logging in
soil.

5. (a) Describe the categories of soil organic matter based on
decomposition stage.
(b) Organic matter decomposition is a two stage phenomenon
Explain.
(c) What are the functions of organic matter in soil?

6. (a) Distinguish between the soil fertility and soil productivity.
(b) Discuss the problems associated with saline soils.
(C) Write the reclamation measures of sodic soils.

7. (a) What are the objectives of soil classification?
(b) Write the names of 12 soil order.
(c) Discuss the seven soil tracts of Bangladesh.

8. Write notes on:
(a) Soil pore spaces;
(b) Cation exchange capacity;
(c) Isomorphous substitution; and
(d) Soil erosion

First Year B.Sc. (Hons.) Examination 2017
Subject - Botany
Course No.- Bot. 107
Course Title - Soil Science
Full Marks - 50
Time - 3 Hours
[Answer any FIVE questions. Figures on the right margin indicate full marks. Give labeled
diagrams wherever necessary.]

1. a. What is meant by soil?
b. Soil is a medium for plant growth - Explain.
c. What are the demands of plants on soil?

2. a. Define soil texture and soil structure.
b. Briefly describe different types of soil structure.
c. Classify soil according to USDA soil textural classes.

3. a. What is soil water?
b. Differentiate water stress and water logging.
c. Why soil water is necessary for plants?

4. a. Distinguish between physical and chemical weathering.
b. Briefly describe the processes of chemical weathering in soil.
c. Write the Jenny's soil forming equation.

5. a. Define soil pH.
b. Describe the influences of soil pH on the availability of nutrients for
plant growth.
c. Write the importance of soil buffering in agriculture.

6. a. Differentiate between soil fertility and soil productivity.
b. Explain "all fertile soils are not productive soils”.
How saline soil can be managed for better crop production.

7. a. What is meant by soil classification?
b. Write down the objectives of soil classification.
c. Mention the name of seven soil tracts of Bangladesh and describe
any two of them.

8. Write notes on:
a. Master horizons;
b. Soil colloids;
c. Composition of soil organic matter;
d. Soil erosion.

Department of Botany
University of Chittagong
First Year B.Sc.(Honours) Examination 2016
Course No. BOT. 107
Course Title: Soil Science
Full Marks: 50
Time: 3 hours
[Answer any five questions. Figures on the right margin
indicate full marks. Give labeled diagrams wherever necessary.
All parts of each question must be answered subsequently.]

1. a.
Define soil.
b. Write the volume composition of soil.
“Soil is a natural body” explain.

2. a.
With example define rock and minerals.
b. What are the soil forming factors?
Describe the steps of soil forming processes in nature.

3. a. What is meant by ion exchange?
b. Distinguish between cation exchange capacity
and anion exchange capacity.
Where does ion exchange take place?
d. Write the most commonly found cation and anion in soil.

4.a. Discuss the categories of soil organic matter.
b. What are the factors affecting the organic matter
content in soil?
c. Diagrammatically show the pathway of humification processes.

5. a. Differentiate between soil fertility and soil productivity
b. Write the characteristics of saline soil and sodic soil.
c. What is acid sulfate soil? How acid sulfate soil
can be managed for better crop production.

6. a. Define soil erosion? Classify soil erosion.
b. Soil erosion by water is a three step processes-
explain.
c. Describe the major types of water erosion.

7. a. What is meant by soil colloids?
b. Briefly describe the structural organization of 1:1 type silicate clays..
c. Discuss the significance of soil colloids in agriculture

8. Write notes on :
a. Soil profile;
b. USDA soil taxonomy;
c. Forms of soil water; and
d. Soil pH and nutrient availability.


DEPARTMENT OF BOTANY
UNIVERSITY OF CHITTAGONG
15 Year B.Sc. (Honours) Examination 2015
Course No. BOT. 107
Course Title: Soil Science
Marks: 50
[Answer any FIVE questions. Figures in the right margin indicate full marks. Give labeled
diagram wherever necessary. All parts of each question must be answered subsequently.
Time: 3 hours

1.(a)Define soil.
(b)What are the demands of plants on soil?
(c)“Soil is a medium for plants growth” explain the statement.

2.(a) Distinguish between rocks and minerals.
(b) Write the characteristics of the main classes of rocks.
(c) Write the Jenny's soil forming equation.

3.(a) Define soil texture.
(b) Classify soil according to USDA soil textural classes.
(c) Differentiate between soil texture and soil structure.

4.(a) What is soil pH?
(b) Briefly describe the effect of pH on nutrient availability and the
activity of soil microorganisms.
(c) How does pH affect cation exchange capacity of soil?

5.(a) Define soil moisture.
(b) Write the biological classification of soil moisture.
(c) What is meant by water logging?

6.(a) Differentiate between soil organic matter and humus.
(b) Mention the composition of soil organic matter.
(c) Write the properties of Fulvic acid, Humic acid and Humin.

7.(a) What is meant by soil classification?
(b) Write the purpose of soil classification.
List the general types of soil of Bangladesh and describe any two of
them.

8. Write notes on :
fa) Soil profile;
(b) Methods of soil conservation;
(c) Soil fertility and productivity; and
(d) Soil forming factors.