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Human Health and Disease

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CBSE Gujarat Board Haryana Board

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Class 10 Class 12

Consider the following four measure (A-D) that could be taken to successfully grow chickpea in an area where bacterial blight disease is common
A) spray with Bordeaux mixture
B) control of the insect vector of the disease pathogen
C) Use of only disease-free seeds
D) Use of varieties resistant to the disease
Which two fo the above measures can control the disease?

  • B and C

  • A and B

  • C and D

  • A and D


C.

C and D

Bacterial blight of chickpea (Cicer arietinum) is caused by bacterium Xanthomonas campestris. They ejected tissue collapse and are digested by bacteria. The rapid spread of bacterial infection occurs through vascular strand. The stems and leaves of infected plant give blighted or burnt up appearance. Control measures include rogueing; 3- year crop rotation, disease free seeds, a spray of copper fungicides and antibiotics besides showing disease resistant varieties. 

Bordeaux mixture is a most common fungicide, it was first discovered by Millardet in 1882 at the university of Bordeaux France to control downy mildew of grapes. It is prepared by mixing copper sulphate, lime and water in the ration of 4: 4: 50.

Bacterial blight of chickpea (Cicer arietinum) is caused by bacterium Xanthomonas campestris. They ejected tissue collapse and are digested by bacteria. The rapid spread of bacterial infection occurs through vascular strand. The stems and leaves of infected plant give blighted or burnt up appearance. Control measures include rogueing; 3- year crop rotation, disease free seeds, a spray of copper fungicides and antibiotics besides showing disease resistant varieties. 

Bordeaux mixture is a most common fungicide, it was first discovered by Millardet in 1882 at the university of Bordeaux France to control downy mildew of grapes. It is prepared by mixing copper sulphate, lime and water in the ration of 4: 4: 50.

501 Views

What is health ?

It is a state of complete, physical, mental and social well being of a person.
911 Views

Name three important aspects to maintain good health.

(i) Balanced diet (ii) Personal hygiene and (iii) Regular exercise.
741 Views

What is disease ?

Malfunctioning of one or more organs characterised by signs and symptoms is called disease.
563 Views

List advantages of good health.

Healthy people are more efficient and productive. good health also brings prosperity and people live long. It also reduces infant and maternal mortality.
588 Views

What is the significance of ‘Typhoid Mary’ ?

Typhoid Mary was a Typhoid carrier who continued to spread typhoid for several years through food she prepared.
616 Views