Animal And Plant Diseases

Question 1

ring rot (bacterial in plants)

Answer 1

• bacterial disease
• affects potatoes, tomatoes and aubergines
• caused by gram positive bacterium (clavibacter michiganensis)
• effect- damages leaves, tubers and fruits and there is no cure

Question 2

What is tobacco mosaic virus ( virus infects plants)

Answer 2

• virus infects tobacco plants and 150 others including tomatoes, peppers and cucumbers
• damages leaves flowers and fruits
• resistant strains available but no cure

Question 3

Potato blight (plants)

Answer 3

• caused by fungal like proctotist called phytohthlora infestans
• hyphae penetrate host cells
• destroys leaves, tubers and fruits
• no cure but resistant strains and chemical treatments reduce risk

Question 4

Black Sigatoka (plants)

Answer 4

• banana disease caused by fungus myscophaerella fijensis
• hyphae penetrate and digest cells turning leaves black
• can be reduced by resistant strains and fungicide but no cure

Question 5

Tuberculosis (bacterial in animals)

Answer 5

• bacterial diseases caused by bacteria mycobacterium tuberculosis
  -damages lung tissue and suppresses immune system
• Curable by antibiotics

Question 6

Bacterial meningitis (bacterial in humans)

Answer 6

• caused by streptococcus pnemoniae
• Bacterial infection of meninges of brain
• causes blood poisoning and rapid death
• cured by antibiotics if delivered early

Question 7

HIV / AIDS ( virus in animals)

Answer 7

• virus targets T helper cells in immune system and gradually destroys immune system
• passed from one to another through bodily fluids

Question 8

Influenza ( viral infection in animals)

Answer 8

• viral infection of epithelial cells in gas exchange system
  -kills the cells leaving them open to secondary infections

Question 9

Malaria

Answer 9

• caused by proctotista plasmodium and spread through bites of infected mosquitoes
• plasmodium has two hosts - mosquitos and humans
• plasmodium reproduces inside female mosquitos and mosquito needs blood to lay eggs therefore passing it onto humans
• plasmodium invaded rbc and causes weakness

Question 10

Ring worm ( fungal disease in animals)

Answer 10

• different fungi infect different species
• causes grey white crusty circular areas of skin
• antifungal creams can help

Question 11

Athletes foot ( fungal disease im animals)

Answer 11

• grows on and digests the warm moist skin between the toes.
• causes cracking and scaling