Diseases Cause and Control Short Answer Biology Class-9 ICSE Selina Publishers

Diseases Cause and Control Short Answer Biology Class-9 ICSE Selina Publishers Solutions Chapter-16. Step By Step ICSE Selina Concise Solutions of Chapter-16 Diseases Cause and Control with Exercise-16 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.

Diseases Cause and Control Exe-16 Short Answer Biology Class-9 ICSE Concise Selina Publishers

Board ICSE
Publications Selina Publication
Subject Biology
Class 9th
Chapter-16 Diseases Cause and Control
Book Name Concise
Topics Solution of C. Short Answer Type
Academic Session 2023-2024

C. Short Answer Type 

Diseases Cause and Control Class-9 Biology Concise Solutions  

Page 176

Question 1.

Define:

(a) Infection

(b) Pathogen

(c) Incubation

(d) Disease

(e) Vaccine

Answer:

(a) Infection: The transmission of diseases from one person to another is called infection.

(b) Pathogen: A pathogen is a disease-causing micro-organism.

(c) Incubation: Incubation period is the period between the entry of germs and appearance of the first symptoms of the disease. All infectious diseases have a certain incubation period.

(d) Disease: Disease is a departure from normal health through structural or functional disorder of the body.

(e) Vaccine: Vaccine is a biological formulation that consist of dead or weakened disease causing organism that provides active acquired immunity to a particular infectious disease.

Question 2.

Write the scientific names of the causative organisms for the following, diseases :

(a) Cholera

(b) Typhoid

(c) Tuberculosis

(d) Taeniasis

(e) Filariasis

Answer:

(a) Vibrio Cholerae

(b) Salmonella typhi

(c) Mycobacterium tuberculosis

(d) Taenia solium

(e) Wuchereria bancrofti

Question 3.

Name the causative germ of AIDS. How is this disease transmitted?

Answer:

Causative germ of AIDS:

HIV (Human immunodeficiency virus)

Transmission of AIDS:

(a) Sexual intercourse

(b) Mother to child transmission

(c) Contaminated blood transfusions

—  : End of Diseases Cause and Control C. Short Answer Class-9 ICSE Biology Solutions :–

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