Rose Black Spot Disease

Leaves often turn yellow and drop early.

Photosynthesis is reduced, affecting growth and flowering.

Spread in the environment by water or wind.

Question 1

Rose black spot is an example of a:

Accepted Answer

Fungal disease of plants

Answer

Bacterial disease of animals

Answer

Protist disease of humans

Answer

Viral disease of humans

Question 2

Why does rose black spot reduce plant growth?

Accepted Answer

It reduces photosynthesis because infected leaves are damaged or lost

Answer

It increases root respiration

Answer

It makes chloroplasts produce more oxygen than usual

Answer

It causes the stem to make less xylem

Question 3

How is rose black spot commonly spread?

Accepted Answer

By water or wind

Answer

Only by sexual contact

Answer

Only by dirty food

Answer

By exchange of blood

What is Rose Black Spot Disease?