Economic Importance of Bacteria MCQs Biology Class-9 ICSE Selina Publishers Part A

Economic Importance of Bacteria MCQs Answer Biology Class-9 ICSE Selina Publishers Solutions Chapter-9 Part A. Step By Step ICSE Selina Concise Solutions of Chapter-9 Economic Importance of Bacteria with Exercise-9A including MCQs, Very Short Answer Type, Short Answer Type, Long Answer Type and Structured/Application Questions Solved . Visit official Website CISCE for detail information about ICSE Board Class-9.

Economic Importance of Bacteria Exe-9A MCQs Answer Biology Class-9 ICSE Concise Selina Publishers

Board	ICSE
Publications	Selina Publication
Subject	Biology
Class	9th
Chapter-9	Economic Importance of Bacteria and Fungi
Book Name	Concise
Topics	Solution of A. MCQs Answer Type
Academic Session	2023-2024

A. Multiple Choice Type 

Economic Importance of Bacteria Class-9 Biology Concise Solutions  

Page 93

Question 1. Choose the correct answer from the options given below:

(a) Bacteria are no more classified as plants primarily because:

(i) these are unicellular

(ii) these are microscopic

(iii) many of them are parasitic

(iv) they have no chlorophyll

Answer 

(iv) :they have no chlorophyll

(b) A particular species of which one of the following, is the source bacterium of the antibiotic, discovered next to penicillin, for the treatment of tuberculosis?

(i) Escherichia

(ii) Streptomyces

(iii) Rhizobium

(iv) Nitrobacter

Answer:

(ii) Streptomyces

(c) Which bacteria is rod shaped?

(i) Coccus

(ii) Spirillum

(iii) Bacillus

(iv) Vibrio

Answer:

(iii) Bacillus

(d) Which bacteria fixes nitrogen in the soil?

(i) Nitrobacter

(ii) Nitrosomonas

(iii) Rhizobium

(iv) Clostridium

Answer:

(iii) Rhizobium

(e) Cell wall of bacteria is composed of:

(i) Cellulose

(ii) Peptidoglycan

(iii) Glycogen

(iv) Lipoproteins

Answer:

(ii) Peptidoglycan

(f) Which of the following structures is suspended in the cytoplasm of a bacterial cell ?

(i) Plasma

(ii) Capsule

(iii) Plasmid

(iv) Flagellum

Answer:

(iii) Plasmid

(g) Bacteria mainly reproduces by means of :

(i) Multiple fission

(ii) Budding

(iii) Binary fission

(iv) Regeneration

Answer:

(iii) Binary fission

(h) Bacteria are referred to as prokaryotes because:

(i) They have no chlorophyll

(ii) They are unicellular

(iii) They are free living-

(iv) They do not have a well defined nucleus enclosed in a nuclear membrane.

Answer:

(iv) They do not have a well defined nucleus enclosed in a nuclear membrane.

(i) Which of the following diseases can be prevented by TAB?

(i) Tuberculosis

(ii) Typhoid

(iii) Tetanus

(iv) Taeniasis

Answer:

(ii) Typhoid

(j) A preparation consisting of weakened or dead germ substances is:

(i) Toxins

(ii) Antitoxins

(iii) Toxoids

(iv) Vaccines

Answer:

(iv) Vaccines

—  : End of Economic Importance of Bacteria Part (A) A. MCQs Answer Class-9 ICSE Biology Solutions :–

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