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Operculum

operculum

A lid or cover becoming detached at maturity by abscission, in eucalyptus (for example), a cap covering the bud and formed by fusion or cohesion of perianth parts.


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Re: How can i asses the parasie loading of littorina littoria?

Your species has an operculum and is marine, so I'm not sure if this would work. We used to collect freshwater snails to see if they had schistosomes. The snails would release cercariae when transferred to a vial of water. We could ...

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by marineman
Sun Feb 24, 2013 1:36 pm
 
Forum: Zoology Discussion
Topic: How can i asses the parasie loading of littorina littoria?
Replies: 7
Views: 3792

Re: How can i asses the parasie loading of littorina littoria?

Your species has an operculum and is marine, so I'm not sure if this would work. We used to collect freshwater snails to see if they had schistosomes. The snails would release cercariae when transferred to a vial of water. We could ...

See entire post
by wbla3335
Fri Feb 22, 2013 9:33 pm
 
Forum: Zoology Discussion
Topic: How can i asses the parasie loading of littorina littoria?
Replies: 7
Views: 3792

respiration of holocephali and the evolution of operculum

as the title says i would appreciate some help about respiration of holocephali and the evolution of operculum and the one gill opening thx

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by Munjarak
Wed Feb 29, 2012 8:26 pm
 
Forum: Zoology Discussion
Topic: respiration of holocephali and the evolution of operculum
Replies: 0
Views: 949

Diffusion

... seem too vague? For fish I would say that they pumo water throught their mouth and over the gill arches using coordinated movements of the jaw and operculum (gill covers) for the ventilation. Each gill arch has two rows of gill filaments composed of flattened plates called lamallae. Blood flowing ...

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by killian07
Mon Dec 12, 2011 4:23 am
 
Forum: General Discussion
Topic: Diffusion
Replies: 2
Views: 3546

Question from a freshman-definitions

... and Polytrichopsida . Sphagnopsida don't have seta and the sporangium is carried by a pseudopodium - the short stalk originating in gametophyte. Operculum - in plants it is the cover of a sporangium. In higher bryophytes it's hidden under calyptra. Apophysis is a swelling present just beneath ...

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by SU_reptile
Tue Oct 17, 2006 4:38 pm
 
Forum: Botany Discussion
Topic: Question from a freshman-definitions
Replies: 12
Views: 7659
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