phycomycetes
藻菌植物
藻菌植物
Phycomycetes n 1 :
a large and probably unnatural group of fungi and funguslike organisms comprising the Mastigomycota (
including the Oomycetes )
and Zygomycota subdivisions of the division Eumycota ;
a category not used in all systems [
synonym : {
Phycomycetes }, {
Phycomycetes group }]
Fungi \
Fun "
gi \ (
f [
u ^]
n "
j [
imac ]),
n .
pl .;
sing . {
fungus }. (
Biol .)
A group of thallophytic plant -
like organisms of low organization ,
destitute of chlorophyll ,
in which reproduction is mainly accomplished by means of asexual spores ,
which are produced in a great variety of ways ,
though sexual reproduction is known to occur in certain {
Phycomycetes },
or so -
called algal fungi .
They include the molds ,
mildews ,
rusts ,
smuts ,
mushrooms ,
toadstools ,
puff balls ,
and the allies of each .
In the two -
kingdom classification system they were classed with the plants ,
but in the modern five -
kingdom classification ,
they are not classed as plants ,
but are classed in their own separate kingdom fungi ,
which includes the phyla Zygomycota (
including simple fungi such as bread molds ),
Ascomycota (
including the yeasts ),
Basidiomycota (
including the mushrooms ,
smuts ,
and rusts ),
and Deuteromycota (
the {
fungi imperfecti }).
Some of the forms ,
such as the yeasts ,
appear as single -
celled microorganisms ,
but all of the fungi are are eukaryotic ,
thus distinguishing them from the prokaryotic microorganisms of the kingdon Monera .
[
Webster 1913 Suppl .
PJC ]
Note :
The Fungi appear to have originated by degeneration from various alg [
ae ],
losing their chlorophyll on assuming a parasitic or saprophytic life .
In an earlier classification they were divided into the subclasses {
Phycomycetes },
the lower or algal fungi ;
the {
Mesomycetes },
or intermediate fungi ;
and the {
Mycomycetes },
or the higher fungi ;
by others into the {
Phycomycetes };
the {
Ascomycetes },
or sac -
spore fungi ;
and the {
Basidiomycetes },
or basidial -
spore fungi .
[
Webster 1913 Suppl .]
Phycomycetes \
Phy `
co *
my *
ce "
tes \,
n .
pl . [
NL .;
Gr .
fy ^
kos seaweed mycetes .] (
Bot .)
A large ,
important class of parasitic or saprophytic fungi ,
the algal or algalike fungi .
The plant body ranges from an undifferentiated mass of protoplasm to a well -
developed and much -
branched mycelium .
Reproduction is mainly sexual ,
by the formation of conidia or sporangia ;
but the group shows every form of transition from this method through simple conjugation to perfect sexual reproduction by egg and sperm in the higher forms . -- {
Phy `
co *
my *
ce "
tous },
a .
[
Webster 1913 Suppl .]
安裝中文字典英文字典查詢工具!
中文字典英文字典工具:
複製到剪貼板
英文字典中文字典相關資料:
BBC Sport - Scores, Fixtures, News - Live Sport Sports news and live sports coverage including scores, results, video, audio and analysis on Football, F1, Cricket, Rugby Union and all other UK sports
Premier League - BBC The home of Premier League on BBC Sport online Includes the latest news stories, results, fixtures, video and audio
Football - latest news today, results video highlights - BBC Sport Football news, scores, results, fixtures and videos from the Premier League, Championship, European and World Football from the BBC
Premier League - Scores Fixtures - Football - BBC Sport Premier League scores, results and fixtures on BBC Sport, including live football scores
Premier League Table and Standings - Football - BBC Sport Find out which football teams are leading the pack or at the foot of the table in the Premier League on BBC Sport
Premier League: Gyokeres scores twice as Gunners move six points clear . . . Gyokeres scores double and Saka on target as Arsenal beat Fulham Lewis-Skelly starts in midfield for first time as Gunners move six points clear West Ham beaten at Brentford after Mavropanos own
Premier League LIVE: Arsenal are champions after Man City draw at . . . - BBC Summary Click the 'Watch and listen' icon at the top of the page for live BBC coverage Arsenal Premier League champions after Man City draw at Bournemouth Cherries confirm their place in Europe
Premier League: Tottenham stay in bottom three with defeat in De Zerbi . . . Reaction as Tottenham stay in the Premier League relegation zone with defeat at Sunderland in Roberto de Zerbi's first game in charge
Barry scores again to earn Everton draw with Leeds Follow live text commentary and listen to BBC Radio 5 Live's Monday Night Club as Everton host Leeds United in the Premier League
Premier League LIVE: Tottenham vs Fulham - score updates Build-up, team news and score updates as Brentford v Burnley, Manchester City v Leeds, Sunderland v Bournemouth, Everton v Newcastle, Tottenham v Fulham with live text updates and reaction