Economic Importance of Bacteria Very Short Answer Biology Class-9 ICSE Selina Publishers Part A

Economic Importance of Bacteria Very Short 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 Very Short 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 B. Very Short Answer Type Part (A)
Academic Session 2023-2024

B. Very Short Answer Type 

Economic Importance of Bacteria Class-9 Biology Concise Solutions  

Page 94

Question 1.

Name the following:

(a) The locomotory structure of a bacterium that enables it to swim.

(b) The process of flavouring tea by certain bacteria.

(c) The process of making leather from the animals skin.

(d) Bacterial disease of mustard.

(e) The scientist who discovered the antibiotic streptomycin.

Answer:

(a) Flagella

(b) Curing

(c) Leather tanning

(d) Black rot of mustard

(e) Selman Waksman

Question 2.

Match the items in Column A with those in Column B.

Column A Column B
(i) Penicillium (a) Bacteria
occuring
in chains
(ii) Diplococci (b) Antibiotic
(iii) Streptococci (c) Bacteria
occurring
in pairs

Answer:

Column A Column B
(i) Penicillium (b) Antibiotic
(ii)Diplococci (c) Bacteria occurring in pairs
(iii)Streptococci (a) Bacteria occuring in chains

Question 3.

Fill in the blanks:

(a) The first antibiotic penicillin was discovered by …………… .

(b) …………… bacteria is found living in the nodules on the roots of leguminous plants.

(c) The hormone …………… was the first substance produced by Escherichia coli.

(d) …………… is an example of denitrifying bacteria.

(e) …………… and …………… are the two heterotrophic modes of nutrition in bacteria.

Answer:

(a) The first antibiotic penicillin was discovered by Alexander Fleming.

(b) Rhizobium bacteria is found living in the nodules on the roots of leguminous plants.

(c) The hormone insulin was the first substance produced by Escherichia coli.

(d) Pseudomonas is an example of denitrifying bacteria.

(e) Saprotrophic and parasitic are the two heterotrophic modes of nutrition in bacteria.

Question 4.

Name the bacteria that converts

(a) ammonium compounds to nitrites

(b) nitrites to nitrates

Answer:

(a) Nitrosomonas

(b) Nitrobacter

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

Return to  Return to Concise Selina ICSE Biology Class-9 

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