infusoria वाक्य
उदाहरण वाक्य
मोबाइल
- At this stage, the fry should be fed with infusoria or a special egglayer fry food, and frequent partial water changes ( around 10 % of the aquarium volume every 24 to 48 hours ) initiated.
- He published " Notes on the Pentateuch " ( 1840 ), a compilation, with original notes on natural history : and printed 100 copies of " Sketch of a Fauna Infusoria for East Norfolk " ( 1848 ).
- Not one species of any creature which flourished before the tertiary ( Ehrenberg's infusoria excepted ) now exists; and of the mammalia which arose during that series, many forms are altogether gone, while of others we have now only kindred species.
- Once this process is completed, the fishes become free-swimming, and at this stage, require very fine sizes of food such as live infusoria for a period of seven to 14 days, after which the fry are able to feed upon newly hatched brine shrimp.
- Once this process is completed, the fishes become free-swimming, and at this stage, require very fine sizes of food such as live infusoria for a period of up to 14 days, after which the fry are able to feed upon newly hatched brine shrimp.
- In his " Vermium Terrestrium et Fluviatilium, seu Animalium Infusoriorum, Helminthecorum, et Testaceorum non Marinorum, succincta Historia " ( 2 vols . in 4to, Copenhagen and Leipzig, 1773 74 ), he arranged the Infusoria for the first time into genera and species.
- He was also a diligent and skillful observer, and busied himself not only with astronomical subjects, such as the double stars, the biological studies of the circulation of the sap in plants, the fructification of plants, infusoria etc . He was the first to observe the pollen tube.
- Infusoria and other similar foods are required for the fry for a " minimum " of three weeks, and it is not unknown for the fishes to take as long as " twelve weeks " to migrate to larger foods, growth rates being particularly sensitive to temperature.
- Except for Lamarck's and Chambers ridiculed attempts and Goldfuss ( 1820 ), who introduced the name Protozoa ( first in 1817 ) for the microscopic Infusoria that Lamarck put at the base of the animal kingdom, tracing the actual history of life in detail and explaining the origins of specific novel groups of organisms were begun in a bold and detailed way only by Darwin's contemporary and admirer Haeckel ( 1866 Haeckel made the important distinction between a group that shared ancestral characters because of their single [ by him called monophyletic ] origin in their common ancestor ( e . g . vertebrates whose last common ancestor acquired a skull and vertebral column and many other features ) and groupings of organisms ( e . g . flying animals or parasitic plants ) that share characters that evolved several times independently, i . e . are polyphyletic.
- The review argued that the vertebrate division relied on the presence of a vertebral column, " a part of the organization of comparatively little importance in the economy "; it found the basis of the mollusca on " the general softness of the body " no better; the choice of the presence of articulations no better either, in the third division; while in the fourth it points out that while the echinoderms may fit well into the chosen scheme, it did not apply " to the entozoa, zoophyta, and infusoria, which constitute by much the greatest portion of this division . " But the review notes that " the general distribution of the animal kingdom established by M . Cuvier in this work, are founded on a more extensive and minute survey of the organization than had ever before been taken, and many of the most important distinctions among the orders and families are the result of his own researches ."
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