Check users, creationist, Administrators
22,649
edits
Foraminifera: Difference between revisions
From CreationWiki, the encyclopedia of creation science
Jump to navigationJump to search
m
no edit summary
No edit summary |
mNo edit summary |
||
| Line 31: | Line 31: | ||
|} | |} | ||
The Foraminifer, which is also known as the forams for short, is a large group of ameoboid protists. They contain reticulatin pseudopods, and fine strands of cytoplasm that branch out to form a dynamic net. Forams produce a shell or test, that either consist of one or more chambers. Scientist have discovered about 275,000 species, both fossil and living. They average in size from 1 millimeter to the largest recorded 19 centimeters. Data proves that Foraminifera are closely related to [[cercozoa]] and [[radiolaria]], all together they make up the group Rhizaria. | The '''Foraminifer''', which is also known as the forams for short, is a large group of ameoboid protists. They contain reticulatin pseudopods, and fine strands of cytoplasm that branch out to form a dynamic net. Forams produce a shell or test, that either consist of one or more chambers. Scientist have discovered about 275,000 species, both fossil and living. They average in size from 1 millimeter to the largest recorded 19 centimeters. Data proves that Foraminifera are closely related to [[cercozoa]] and [[radiolaria]], all together they make up the group Rhizaria. | ||
== Anatomy == | == Anatomy == | ||
| Line 39: | Line 39: | ||
== Reproduction == | == Reproduction == | ||
Forams can live up to a couple of years. Forams with multichambered cells add on larger and larger chambers as they grow. This allows them to break apart themselves into many small pieces that do not contain shells. They will then grow flagella and swim away. It is thought that for every other generation of Foraminferas they will switch off between sexual and asexual. This then leaves things like many adults to have different body forms then their offspring.[http://www.reef.edu.au/asp_pages/secb.asp?FormNo=10] | Forams can live up to a couple of years. Forams with multichambered cells add on larger and larger chambers as they grow. This allows them to break apart themselves into many small pieces that do not contain shells. They will then grow flagella and swim away. It is thought that for every other generation of Foraminferas they will switch off between sexual and asexual. This then leaves things like many adults to have different body forms then their offspring.[http://www.reef.edu.au/asp_pages/secb.asp?FormNo=10] | ||
| Line 53: | Line 52: | ||
Image:Mikrofossils_hg.jpg|Microfossils from marine sediments consisting of planktic foraminifera (small white shells) and benthic foraminifera (large white shell) among [[radiolaria]] (spheres), sponge [[spicules]] (needles). | Image:Mikrofossils_hg.jpg|Microfossils from marine sediments consisting of planktic foraminifera (small white shells) and benthic foraminifera (large white shell) among [[radiolaria]] (spheres), sponge [[spicules]] (needles). | ||
Image:Microscopic_Shells_Of_Seafloor_Sediment.jpg|Foraminferan shells | Image:Microscopic_Shells_Of_Seafloor_Sediment.jpg|Foraminferan shells | ||
</gallery> | </gallery> | ||
