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 :–
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