Selina solutions at BYJU’S aims at providing detailed solutions serving as an effective and powerful guide to understanding concepts in depth. ICSE Class 9 solutions have been chalked out in such a way so as to adhere to the guidelines provided by the C.I.S.C.E. It enables students to learn all concepts of exercise questions at one go.
It serves as a perfect prep tool that is reliable enough even from the examination point of view. To score good marks and perform exceedingly well, Selina solutions are recommended for toppers over the years, thus signifying its importance and reach. The main objective is to shape concepts clearly and make it more interesting for students.
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Selina Solutions for class 9 Biology Chapter 9 – Economic Importance Of Bacteria And Fungi
ICSE Class 9 Biology Chapter 9 – Economic Importance Of Bacteria and Fungi chapter is classified under Unit – IV – Diversity In Living Organisms. The unit on the whole deals with the diversity observed in living organisms based on a particular region of land.
Biodiversity is a term that often is used to relate to the variety of life on earth. It concerns with the number of species of microorganisms, plants and animals, the colossal diversity of genes in these species, the wide variety of ecosystems on the earth such as coral reefs, rainforests, deserts etc constituting for the biological diversity on planet earth.
Bacteria are the most primitive form of living entities, this chapter provides details of the structure of bacteria types, different modes of nutrition, respiration, reproduction their application in different fields.
The other part of the chapters takes the attention of students towards the fungi, their structure, nutrition, respiration, and economic importance of fungi in different fields.
The different types of questions that are covered in this chapter are:
- Multiple-choice questions
- Fill ups
- Matching items from columns
- Short answer type questions
- Long answer type questions
- Application/Structured type of questions
List of subtopics covered in Chapter 9 – Economic Importance Of Bacteria and Fungi
| Number | Subtopic |
| 9.1 | Bacteria – A general study |
| 9.2 | Useful role of bacteria in medicine |
| 9.3 | Bacteria – role in agriculture |
| 9.4 | Bacteria – role in industry |
| 9.5 | Spoilage of food by bacteria |
| 9.6 | Bacterial diseases in plants and animals |
| 9.7 | Bioweapons |
| 9.8 | Fungi – A general study |
| 9.9 | Useful and harmful fungi |
| 9.10 | Useful role of fungi |
| 9.11 | Fungi – Role in industry |
List of Exercise
| Name of the exercise | Number of questions | Question Type | Page number |
| Progress Check | 8 | short | 85,94 |
| Review questions | 8 | MCQ | 89,95 |
| 15 | short | 89,90,95 | |
| 13 | long | 90,95 |
Selina Solutions for class 9 Biology Chapter 9 – Economic Importance Of Bacteria And Fungi
The chapter outlines the importance of micro-organisms – bacteria and fungi. Bacteria are the most primitive unicellular entities. They are ubiquitous, present everywhere. They vary greatly in their size and shapes and carry out the basic functionality of living entities. As per recent Five kingdom classification, bacteria are not plants as they do not possess chlorophyll hence cannot synthesize their own food. The importance of bacteria in different fields such as medicine, agriculture, industry etc is discussed.
The second part of the chapter deals with the general study of fungi along with its basic structure and economic significance of fungi. It also provides information on the usefulness and harmful effects of fungi. Role of fungi in industries such as bakeries, breweries, mushroom cultivation etc has been detailed.
Key Features of Selina Solutions for class 9 Biology Chapter 9 – Economic Importance Of Bacteria And Fungi
- Selina solution is a free tool that is easily accessible
- The language used for solution making is coherent and easy.
- Solutions are formulated to the point
- Solutions are in accordance with the information provided in the textbook
- Neatly labelled diagrams are used to explain concepts
- Use of tabular columns wherever necessary
- Use of pointers
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