6.2.3 - Fungi as pathogens

Question 1

Examples of Fungi

Answer 1

Mushrooms
Yeasts
Moulds

Question 2

Are fungi usually single-celled?

Answer 2

YES

Question 3

What are the cell walls of fungal cells made from?

Answer 3

Chitin and Glycan

Question 4

What do parasites and saprophytes do?

Answer 4

Organisms that obtain food by absorbing dissolved organic matter

Question 5

What are the 4 main structures in a fungi?

Answer 5

Fruiting body
Spores
Hyphae
Mycelium

Question 6

What are hyphae?

Answer 6

Long thread-like filaments which emerge from the spore and penetrate the stomata or stem for example in plants.

Question 7

What are spores used for in fungi?

Answer 7

Reproduction

Question 8

What do cellulases do?

Answer 8

Digest plant cells

Question 9

What happens after hyphae enter a surface?

Answer 9

They grow to form mycelium

Question 10

What do mycelium do to plants?

Answer 10

Absorbs nutrients from plants

Question 11

What do pustules do in fungi?

Answer 11

Break the plants epidermis, making it more difficult to do transpiration

Question 12

What are 3 things that fungi can do?

Answer 12

Be poisonous
Cause allergies
Cause parasitic diseases

Question 13

What does stem rust fungi do to a plant?

Answer 13

Take up nutrients
So less glucose to form starch
Stem rust interferes with vascular tissue
So less sucrose to transport to roots