Lec 8 Flashcards
Imperfect fungi reproductive sexual
T/F?
F, Asexual by spores and budding
Are fungi which do not fit into the commonly established taxonomic classifications of fungi
Deuteromycota (imperfect fungi)
Deuteromycota sexual form of reproduction has been observed.
T/F?
F, has never been observed
Causes early blight of potato, Leaf spot disease in Withania somnifera and can infest many other plants.
Alternaria alternata
- club-shaped spores are single or form long chains.
- can grow thick colonies. usually green, black, gray.
Alternaria
are facultative plant pathogens
Rhizoctonia
causes a wide range of commercially significant plant diseases.
Rhizoctonia solani
Photobiont on lichen are only green alga
T/F?
F, Either a green alga or a cyanobacterium.
- are one of the most successful mutualistic association.
- are the pioneer inhabitants of the harsh environments
- are extremely sensitive to air pollution especially SO2.
Lichens
Why lichen are slow growing?
because thalli are inactive when dry – only grow when wetted.
leaf-like thalli with an upper and lower cortex, attached to substrate by rhizines.
Which type of Lichen morphology?
Foliose
scale-like thalli, lack a lower cortex, thus attached directly to the substrate by medullary hyphae.
Which type of Lichen morphology?
Crustose
plant-like or thread like thalli, attached to substrate by holdfast.
Which type of Lichen morphology?
Fruticose
Crustose thalli have complex structure than foliose and fruticose thalli.
T/F?
F, have simpler structure
is the breakdown of sugar by yeast into carbon dioxide and ethyl alcohol in the absence of oxygen is called alcoholic fermentation.
Anaerobic fermentation
