Biology: Taxonomy and Classification

In this concept of species, the species is recognised by its essential characters expressed in morphology.

This method of taxonomy involves clustering of individuals of a taxon or several taxa.

In this principle of nomenclature method, if two or more names are already in use then the correct name will be the one that was published earlier.

In this identification key, the number on the right side indicates the next alternative character for consideration.

This group of animals have multicellular without tissue grade.

In this stage of cell preparation, water vapour is removed from cells or tissues using chemical agents.

This microscope contains glass lenses that magnify the image of the object and focus the light on the retina of the observer's eye.

The characterisation and identification of a cell's complete chromosome set is referred to as karyotyping.

In this concept of species, species are groups of inter breeding natural populations that are reproductively isolated from other such group.

This type of microscope is useful for viewing suspensions of bacteria.

In this principle of nomenclature method, a taxon must have only one correct name.

In this stage of cell preparation, the embedded material is cut down into thin portion of needed thickness.

The desired size of the clusters or groupings is called the operational taxonomic unit.

This group of animal has multicellular with tissue grade.

This method of taxonomy refers to the use of information about small molecules produced by the action of enzymes.

This phylum is multicellular, aquatic organisms and has a cellular grade of construction without the occurance of tissues.

In this phylum, organisms exist in two different body forms namely a polyp and a medusa.

This microscope has special fitments to the objectives lens and sub stage condenser, the effect of which is to exaggerate the structural differences between the cell components.

In this method of taxonomy, karyotyping is the first stage in the process of using chromosomes in taxonomy.

In this stage of cell preparation, the sections are immersed in dyes that stain some structures better than other structures.

In this principle of nomenclature method, names referring to two separate taxa of the same nomenclatural level are spelt with the same spellings.

In Hydrozoa the animal has a dominant polyp body form and a reduced medusa stage.

In this stage of cell preparation, cleaned sections are mounted on a slide using a suitable medium like canada balsam.

This microscope shows depth of focus and a three dimensional image of the object and very effective tool to study the surface topography of a specimen.

These are the popular round worms and the body of the worm is narrow and pointed at both the ends.