Bio 130 Exam 3 Questions and Correct Answers
Fungi are eukaryotes, heterotrophs, multicellular and have cell walls with the
polysaccharide chitin
What is a fungus?
Single celled (yeasts), multicellular filamentous forms
What are the 2 growth forms of fungi?
threadlike filaments that make up fungal bodies
What are hyphae?
Combined mass of hyphae
What are septa?
Crosswalls that divide hyphae
What are septa?
Aggregations of hyphae usually make up large structures
How do hyphae form large structures?
Hyphae secrete digestive enzymes. Enzymes break down organic material into simpler
forms that can be absorbed by hyphae
How do fungi feed?
Asexual- fragmentation (spores), Sexual- results in spores
How can fungi reproduce?
, Fungi are extremely important decomposers
Why are fungi important in nutrient cycles?
Mychorrhizae are fungi that grow inside of plant roots. Mycorrhizae extend plant root
systems
What are mycorrhizal fungi?
Fungi help plants get nutrients. Plant give fungi sugars
How do mycorrhizal fungi benefit plants?
Lichens are composite organisms
What is a lichen?
Lichens are composed of fungus and green algae or fungus and Cyanobacteria
What organisms make up a lichen?
Plants evolved from the green algae group called Charophytes
From which group of protists did green plants evolve?
450 million years ago
How long ago did protists evolve?
Unfiltered sunlight, plentiful CO2, Plentiful nutrients near water
How would moving on to land be advantageous for the first land plants?
Water is more scarce, lack of structural support
How is living on land more difficult than living in the water?
Fungi are eukaryotes, heterotrophs, multicellular and have cell walls with the
polysaccharide chitin
What is a fungus?
Single celled (yeasts), multicellular filamentous forms
What are the 2 growth forms of fungi?
threadlike filaments that make up fungal bodies
What are hyphae?
Combined mass of hyphae
What are septa?
Crosswalls that divide hyphae
What are septa?
Aggregations of hyphae usually make up large structures
How do hyphae form large structures?
Hyphae secrete digestive enzymes. Enzymes break down organic material into simpler
forms that can be absorbed by hyphae
How do fungi feed?
Asexual- fragmentation (spores), Sexual- results in spores
How can fungi reproduce?
, Fungi are extremely important decomposers
Why are fungi important in nutrient cycles?
Mychorrhizae are fungi that grow inside of plant roots. Mycorrhizae extend plant root
systems
What are mycorrhizal fungi?
Fungi help plants get nutrients. Plant give fungi sugars
How do mycorrhizal fungi benefit plants?
Lichens are composite organisms
What is a lichen?
Lichens are composed of fungus and green algae or fungus and Cyanobacteria
What organisms make up a lichen?
Plants evolved from the green algae group called Charophytes
From which group of protists did green plants evolve?
450 million years ago
How long ago did protists evolve?
Unfiltered sunlight, plentiful CO2, Plentiful nutrients near water
How would moving on to land be advantageous for the first land plants?
Water is more scarce, lack of structural support
How is living on land more difficult than living in the water?
