WSU Biology 106 Lates Exam 2
Questions and All Correct Answers.
Fungi - Answer -heterotrophs that feed by absorption
-breakdown organic material, complex compounds by excreting enzymes so the fungi can
absorb
Chitin - Answer -make up cell wall of fungi, structural material
Hyphae - Answer -branching filament structure, mostly underground
-main mode of vegetative growth
Mycellum - Answer -a collective group of hyphae
Fungi can propagate themselves - Answer -by producing vast numbers of spores, either
sexually or asexually
Definition of Analogous - Answer -structures performing a similar function but having a
different evolutionary origin (example: wings on insects and birds)
Chytrids - Answer -found in freshwater and terrestrial habitats
-decomposers, mutualist, saprobic, parasitic
-diverged early in fungal evolution
-
Zygomycetes - Answer -fast growing bread and fruit molds
-named for their zygosporangia (the site of karyogamy and then meiosis)
Ascomycetes - Answer -live in marine, freshwater and terrestrial habitats
-produce saclike asci contained in fruiting bodies called ascocarps
-commonly called sac fungi
, Mycorrhizae - Answer mutually beneficial relationships between fungi and plant roots
-"fungus roots"
-delivers minerals and receives organic nutrients
-ectomycorrhizal and endomycorrhizal fungi
Decomposers - Answer essential recycling between the living and nonliving world
Lichen - Answer symbiotic association of photosynthetic microorganisms held in fungal hyphae
-the fungal component: most often an Ascomycete
-algae or cyanobacteria: occupy an inner layer below the lichen surface
Pathogens - Answer about 30% of known fungal species are parasites, mostly on or in plants
Practical uses of fungi - Answer -make cheeses, alcoholic beverages, and bread
-genetic research on fungi is leading to application in biotechnology
-antibiotics produced by fungi treat bacterial infections
Five key traits that land plants share only with charophyceans - Answer 1. similarities in cell
wall synthesis
2. photo respiratory enzymes
3. structure of sperm
4. similarities during cell division
5. homologous chloroplast
Five key traits that appear in nearly all land plants but not in the charophyceans - Answer 1.
apical meristems
2. alternation of generations
3. walled spores produced in sporangia
4. multicellular gametangia
5. multicellular dependent embryos
Questions and All Correct Answers.
Fungi - Answer -heterotrophs that feed by absorption
-breakdown organic material, complex compounds by excreting enzymes so the fungi can
absorb
Chitin - Answer -make up cell wall of fungi, structural material
Hyphae - Answer -branching filament structure, mostly underground
-main mode of vegetative growth
Mycellum - Answer -a collective group of hyphae
Fungi can propagate themselves - Answer -by producing vast numbers of spores, either
sexually or asexually
Definition of Analogous - Answer -structures performing a similar function but having a
different evolutionary origin (example: wings on insects and birds)
Chytrids - Answer -found in freshwater and terrestrial habitats
-decomposers, mutualist, saprobic, parasitic
-diverged early in fungal evolution
-
Zygomycetes - Answer -fast growing bread and fruit molds
-named for their zygosporangia (the site of karyogamy and then meiosis)
Ascomycetes - Answer -live in marine, freshwater and terrestrial habitats
-produce saclike asci contained in fruiting bodies called ascocarps
-commonly called sac fungi
, Mycorrhizae - Answer mutually beneficial relationships between fungi and plant roots
-"fungus roots"
-delivers minerals and receives organic nutrients
-ectomycorrhizal and endomycorrhizal fungi
Decomposers - Answer essential recycling between the living and nonliving world
Lichen - Answer symbiotic association of photosynthetic microorganisms held in fungal hyphae
-the fungal component: most often an Ascomycete
-algae or cyanobacteria: occupy an inner layer below the lichen surface
Pathogens - Answer about 30% of known fungal species are parasites, mostly on or in plants
Practical uses of fungi - Answer -make cheeses, alcoholic beverages, and bread
-genetic research on fungi is leading to application in biotechnology
-antibiotics produced by fungi treat bacterial infections
Five key traits that land plants share only with charophyceans - Answer 1. similarities in cell
wall synthesis
2. photo respiratory enzymes
3. structure of sperm
4. similarities during cell division
5. homologous chloroplast
Five key traits that appear in nearly all land plants but not in the charophyceans - Answer 1.
apical meristems
2. alternation of generations
3. walled spores produced in sporangia
4. multicellular gametangia
5. multicellular dependent embryos
