10. Pathogens And Disease

Question 1

What are pathogens?

Answer 1

Pathogens are microorganisms that cause infectious diseases.

They can be spread as by water, air or direct contact.

Question 2

Everything you need to know for viral diseases:

Answer 2

Viruses reduce rapidly causing damage to the cells.

They can also cause diseases in plants.

Question 3

Everything you need to know for Measles:

Answer 3

Symptoms : fever and red skin rash

Spread by breathing in droplets such as sneezes and coughs

Question 4

Everything you need to know for HIV:

Answer 4

Spread by sexual contact.

At first it causes a flu like illness

Question 5

Everything you need to know for Tobacco Mosaic Virus (TMV):

Answer 5

This occurs in plant only.

Affects plant growth and photosynthesis

Question 6

Everything you need to know for Bacterial diseases:

Answer 6

Bacteria may damages cells directly or produce toxins in tissues.

Question 7

What is Salmonella?

Answer 7

It’s a type of food poisoning caused by raw meet that contain bacteria.

It can cause vomiting, cramps and fever.

Question 8

What is Gonorrhoea?

Answer 8

This is a sexually transmitted disease which is caused by bacteria.

It is the spread by sexual contact.

It can easily be treated by penicillin.

Question 9

Fungal diseases:

ROSE BLACK SPOT

Answer 9

ROSE BLACK SPOT.

It spreads when spores are carried from plant to a land by water or wind. Purple or black spots develops on leaves.

The loss of leaves will stunt the growth of the plant because photosynthesis is reduced.