Pathogen

Q. Select the correctly matched pairs regarding the pest and its biocontrol agent.

A. Ladybird beetle - Mosquitoes
B. Dragonflies - Aphids
C. Bacillus thuringiensis - Caterpillars of butterfly
D. Trichoderma - Plant pathogens

1. A, B, C and D
2. C and D
3. A and B
4. B, C and D

Q.

The organisms which cause diseases in plants and animals are called:

1. Pathogens

2. Vectors

3. Insects

4. Worms

Q. Disease causing organisms are called .

1. bacteria
2. protozoans
3. pathogens
4. viruses

Q. Which of the following bacteria is not a source of restriction endonuclease?

1. Bacillus amyloliquefaciens
2. Haemophilus influenzae
3. Entamoeba coli
4. Escherichia coli

Q. Which of the following set of diseases is caused by bacteria?

1. Cholera and tetanus
2. Typhoid and smallpox
3. Tetanus and mumps
4. Herpes and influenza

Q. Which of the following is true for a pathogen?

1. Disease causing microorganism
2. External agent
3. Infects and multiplies within the host
4. All of the above

Q. Fill in the Blanks
Any organism capable of producing a disease is called _____.

Q.

The organisms which cause diseases in plants and animals are called:

1. Pathogens

2. Vectors

3. Insects

4. Worms

Q. When children play barefoot in pools of dirty water and flood water, they are vulnerable to

1. leptospirosis and bilharzia
2. Guinea worm infection, elephantiasis and amoebic dysentery
3. malaria, amoebic dysentery and leptospirosis
4. bilharzia, infective hepatitis and diarrhoea

Q.

The organisms which cause diseases in plants and animals are called:

1. Worms

2. Insects

3. Vectors

4. Pathogens

Q. Once an author (allergic) decided to move into a village to draw inspiration for his new novel. Since he was born and brought up in the city, he developed some difficulties in the initial few days of his stay. Which of the following could be the possible symptoms he might have shown, in response to the new environment?

I) Sneezing
II) Fracture in the leg
III) Eyes appearing red with tears
IV) Backache
V) Breathing difficulty

1. I, II, III and IV
2. I, III and V
3. I, II, III and V
4. I, II, IV and V

Q. The virus that infects bacteria is called _________

1. Cyanophage
2. Mycophage
3. Bacteriophage
4. None of these

Q.

Name the organisms which cause the following: (i) Cholera

Q. Which of the following is true for a pathogen.

1. Disease causing microorganism
2. Infects and multiplies within the host
3. All of the above
4. External agent

Q. Choose the most appropriate option

1. All bacteria are pathogenic
2. All viruses are pathogenic
3. Some bacteria and all viruses are pathogenic
4. Both bacteria and viruses are non-pathogenic

Q. Generalised and severe form of allergy is called

1. autoimmunity
2. anaphylaxis
3. fever
4. all of the above

Q. Choose the most appropriate option:

1. All bacteria are pathogenic
2. Some bacteria and all viruses are pathogenic
3. Both bacteria and viruses are non-pathogenic
4. All viruses are pathogenic

Q. When children play barefoot in pools of dirty water and flood water, they are vulnerable to

1. leptospirosis and bilharzia
2. malaria, amoebic dysentery and leptospirosis
3. bilharzia, infective hepatitis and diarrhoea
4. Guinea worm infection, elephantiasis and amoebic dysentery

Q. When a person comes in contact with allergens, a few changes occur inside the person's body. Which of the following is not true regarding the changes related to allergic reactions?

1. Increase in quantities of circulating antibodies in the blood
2. Increase in secretion of chemicals like histamine and serotonin
3. Dilation of peripheral blood vessels
4. Increase in quantities of circulating pathogens in the blood

Q. Fill in the columns of the following table.

S.No.	Disease	Cause	Mode of spread	Preventive measures
$1$.	Influenza
$2$.	Rabies
$3$.	Malaria
$4$.	Cholera
$5$.	Tuberculosis

Q. When children play barefoot in pools of dirty water and flood water, they are vulnerable to

1. leptospirosis and bilharzia
2. malaria, amoebic dysentery and leptospirosis
3. bilharzia, infective hepatitis and diarrhoea
4. Guinea worm infection, elephantiasis and amoebic dysentery

Q. Write the missing correlated terms.
Typhoid::: Tubercuculosis:
Mycobacterium.

Q. If all ponds and puddles are destroyed, the organism likely to be destroyed is _____________.

1. Ascar
2. Trypanosoma
3. Plasmodium
4. Leishmania

Q. Which type of pathogen (viral- V, bacterial- B, protozoan- P) cause the following disease.​

Disease	Pathogen
Kala-azar
SARS
Acne
Rabies
$H_1{N}_1$

Q.

'Pathogens' are

1. Cells which kill the parasites

2. Substances produced against any disease causative organism

3. Chemical substances produced by the host cells to kill the parasite animal

4. Disease spreading factors

Q.

'Pathogens' are

1. Substances produced against any disease causative organism

2. Chemical substances produced by the host cells to kill the parasite animal

3. Disease spreading factors

4. Cells which kill the parasites