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Each Acetabularia cell is composed of three segments: the "foot" or basal segment which contains the nucleus, the "stalk", and the "cap". Hämmerling exchanged caps between individuals from two species, A. mediterranea and A. crenulata. A. mediterranea has a smooth, disc-shaped cap, while A. crenulata has a branched, flower-like cap.
Life cycle of Acetabularia acetabulum. This alga adheres to the substrate with rhizoids (root-like processes), and these are the only part of the alga present in the winter. . The thallus consists of a single cell, and in the spring a slender stem develops from the holdfast, growing vertically to a length of about 5 cm (2 i
Shortly thereafter, the mediterranea regenerated the removed parts, but with the characteristics from the crenulata species. [4] This experiment demonstrated that the nucleus contains the genetic information and controls development. [7] The experiment also proved the existence of morphogenetic substances, which would eventually become known as ...
Acetabularia crenulata, one of the many species known as mermaid's wineglass, is a form of green alga generally found in shallow tropical seas. It can be found growing in great abundance along stretches of the overseas highway to Key West, Florida bordering on Florida Bay .
Acetabulum / æ s ɪ ˈ t æ b j ʊ l ə m / (pl.: acetabula) in invertebrate zoology is a saucer-shaped organ of attachment in some annelid worms (like leech) and flatworms.It is a specialised sucker for parasitic adaptation in trematodes by which the worms are able to attach on the host. [1]
There are three bones of the os coxae (hip bone) that come together to form the acetabulum.Contributing a little more than two-fifths of the structure is the ischium, which provides lower and side boundaries to the acetabulum.
In the moments after he was struck by the Taser, Scott’s legs bounced up and down uncontrollably on his 6-foot-3, 260-pound frame. After getting up, he couldn’t stop shaking from the pulsing waves of electricity, he said.
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