Plant Diseases And Defences

Question 1

How is chalara ash dieback spread?

Answer 1

It is spread by the wind

Question 2

How is the spread of chalara ash dieback limited?

Answer 2

Removing debris from clothing before leaving the area and quarantining infected trees.

Question 3

What are the symptoms of low mineral concentration in soil?

Answer 3

Less minerals being absorbed causing deficiencies.

Question 4

What are a plant’s main defence?

Answer 4

Cuticle

Question 5

What is a cuticle?

Answer 5

A physical barrier on plants that is a waxy layer which is tough for pathogens to get past

Question 6

What are physical barriers not good against?

Answer 6

Animals, mainly herbivores

Question 7

What do chemical barriers in plants do?

Answer 7

They poison or deter animals and pathogens when attacked

Question 8

How do some fungi get past the cuticle in plants?

Answer 8

They produce threads that pass through the skin and take the nutrients from the cell

Question 9

How can insects carry disease between plants?

Answer 9

They can take the infection when they land on infected plants and carry it onto other plants whin they feed off of them

Question 10

Why are organisms more vulnerable when there is a cut in the physical barrier?

Answer 10

Because there is a way directly into the organism