Protists and archaea 2

Question 1

What are the key ideas

Answer 1

• All protists are eukaryotes
• nucleus and membrane-bound organelles
• single-celled
• have a well-developed cytoskeleton

Question 2

What is endosymbiosis

Answer 2

• one organism living in another
• The relationship between aerobic protists created the mitochondria
• The relationship with photosynthetic protists resulted in the chloroplasts

Question 3

What are the qualities of symbiotic protists

Answer 3

• Wood digestive protists help break down the wood so termites can gain energy from the indigestible cellulose

Question 3

What is the structure and function of a fungi in an ecosystem

Answer 3

• multicellular fungi extend filaments called hyphae (basically their roots)
• Spores enable the fungi to colonise their surroundings, and spores germinate and grow when conditions are favourable
• Hyphe secretes enzymes into its surroundings to break down dead matter, releasing nutrients
• Hyphe absorbs these nutrients
• makes fungi good decomposers

Question 4

Nucleomorphs?

Answer 4

• functional verstil nuclei

Question 5

What are the 2 types of hyphe

Answer 5

septate and coenoyctic