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Reefs

reef

1. A chain or range of rocks lying at or near the surface of the water. See Coral reefs, under Coral.

2. (Science: chemical) A large vein of auriferous quartz; so called in australia. Hence, any body of rock yielding valuable ore.

(Science: zoology) Reef builder, any heron of the genus Demigretta; as, the blue reef heron (D.jugularis) of australia.

Origin: Akin to D. Rif, G. Riff, Icel. Rif, Dan. Rev; cf. Icel. Rifa rift, rent, fissure, rifa to rive, bear. Cf. Rift, Rive.


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Book recommendation for exam

... Leishmania. 4. Porifera : Skeleton, canal system and reproduction. 5. Coelenterata : Polymorphism, defensive structures and their mechanism; coral reefs and their formation; metagenesis; general features and life history of Obelia and Aurelia. 6. Platyhelminthes : Parasitic adaptation; general ...

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by bertstare
Sun Oct 21, 2012 2:19 pm
 
Forum: Zoology Discussion
Topic: Book recommendation for exam
Replies: 3
Views: 6159

Discuss the Possibility that the Earth is a Supreme Being

... level. It is also her internal growth. The presence of a central nerve system decides the defintion of offspring. Others such as plants, coral reefs and fungi are her living tissues. The only source of energy from the universe (i.e. a mother cell) emitted from burning of her own substances. ...

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by kk23wong
Tue Jul 06, 2010 5:29 am
 
Forum: General Discussion
Topic: Discuss the Possibility that the Earth is a Supreme Being
Replies: 0
Views: 2839

Coral and Scyphzoans

Firsd one is exoskeletons. It is the calcium carbonate skeleton that created coral reefs. You are right with the second one. Mature scyphozoans are all medusae. Juveniles are, in most cases polyps but change at a very early stage to medusae.

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by firechild
Tue Feb 02, 2010 2:13 am
 
Forum: Zoology Discussion
Topic: Coral and Scyphzoans
Replies: 1
Views: 2929

Coral and Scyphzoans

Coral reefs, atolls, and islands resultant of the buildup of coral: 1 polyps, 2medusae,3 exoskeleton,4 wastes What one of these causes? :? I think its wastes am i right..? Which statement is true for scyphozoan medusae? A.They ...

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by purplec16
Tue Feb 02, 2010 1:47 am
 
Forum: Zoology Discussion
Topic: Coral and Scyphzoans
Replies: 1
Views: 2929

Major for a Job Regarding Coral Reefs

... the states, so there is no marine biology program. I was hoping to eventually find a job involving the preservation and restoration of the coral reefs we have now. I was wondering what the best major would be for this option. I'm currently just general bio and was hoping to make it more specific ...

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by mtop
Wed Oct 21, 2009 11:41 pm
 
Forum: General Discussion
Topic: Major for a Job Regarding Coral Reefs
Replies: 0
Views: 688
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