zoosporangium

[zoh-uh-spuh-ran-jee-uhm]

noun

Botany.

plural

zoosporangia 

1. a sporangium or spore case in which zoospores are produced.

zoosporangium

/ ˌzəʊəspɔːˈrændʒɪəm /

noun

1. botany a sporangium that produces zoospores

zoosporangium

plural

zoosporangia 

1. A sporangium in which zoospores develop.

Other Word Forms

• zoosporangial adjective

Word History and Origins

Origin of zoosporangium¹

First recorded in 1870–75; zoo- + sporangium

Example Sentences

When the free ends of the hyphae emerge again into the air they swell up into spherical bodies which may either fall off and behave as conidia, each putting out a germ-tube and infecting the host; or the germ-tube itself swells up into a zoosporangium which develops a number of zoospores.

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Each “conidium” contains numerous nuclei and is really a zoosporangium, as after dispersal it breaks up into a number of zoospores.

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The oospore on germination usually gives origin to a zoosporangium, but may form directly a germ tube which infects the host.

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Motile zoospores which escape from the zoosporangium are present except in Aplanes.

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B, a ripe zoösporangium, × 100.

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