B3

Question 1

Pathogens

Answer 1

Pathogens are micro organisms that cause infectious disease

Can be fungi, protists, bacteria, or viruses

Question 2

Measles

Answer 2

Symptom - Fever and Red skin rash

Transmission - Droplet infection from sneezes or coughs

Control spread by - Child Vaccination

Caused by - Virus

Question 3

Tobacco Mosaic Virus

Answer 3

Symptom - Mosaic pattern on leaves

Transmission - Enters via wounds in the epidermis caused by pests

Control spread by - Remove infected leaves and control pests creating the wounds

Caused by - Virus

Question 4

Rose Black Spot

Answer 4

Symptom - Purple black spots on leaves

Transmission - Spores carried via wind or water

Control spread by - Remove infected leaves and spray with pesticide

Caused by - Fungus

Question 5

Malaria : STCC

Answer 5

Symptom - Recurrent Fever

Transmission - By a vector from an infected person

Control spread by - Preventing the breeding of mosquitoes or use a net to stop being bitten

Caused by - Protist

Question 6

Gonorrhoea

Answer 6

Symptom - Green discharge from penis or vagina

Transmission - Direct sexual contact or body fluids

Control spread by - Use a condom and treat the infected person with antibiotics

Caused by - Bacteria

Question 7

Salmonella - STCC

Answer 7

Symptom - Fever, Cramp, Vomiting, Diarrhoea

Transmission - Food prepared in unhygeineic conditions or not cooked properly

Control spread by - Improve food hygeine, wash hands, vaccinate poultry, cook food thoroughly

Caused by - Bacteria