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The scientific term for biological classification categories is the:
The scientific term for biological classification categories is called a 'taxon' (plural: taxa). A taxon represents a particular level or rank in the taxonomic hierarchy, such as species, genus, family, order, class, phylum, kingdom, and domain.
What is meant by the "species problem"?
The species problem is the set of questions that arises when biologists attempt to define what a species is. Such a definition is called a species concept; there are at least 26 recognized species concepts.
The suffix that denotes the taxonomic category 'Family' in plants would be
The suffix '-aceae' denotes the taxonomic category 'Family' in plants. For example, the family name for roses is Rosaceae, for grasses is Poaceae, and for legumes is Fabaceae.
As we go lower from kingdom to Species, the number of common characers at each taxa:
Page 10 NCERT (XI)
Which of the following taxonomic categories contains organisms least similar to one another?
Page 10 , XI NCERT
As we go higher from species to kingdom, the number of common characteristics goes on decreasing.
Study the four statements (I-IV) given below and select the two correct ones out of them:
I. Definition of biological species was given by Ernst Mayr.
II. Photoperiod does not affect reproduction in plants.
III. Binomial nomenclature system was given by RH Whittaker.
IV. In unicellular organisms, reproduction is synonymous with growth.
The two correct statements are
Statements I and IV are correct. The correct form of II and III are as follows:
II. Photoperiod does affect the reproduction in plants.
III. Binomial nomenclature was given by Carolus Linnaeus.
The living organisms can be unexceptionally distinguished from the non-living things on the basis of their ability for:
Considering, unexceptionally means without exception, option (2) is correct, as reproduction is not shown by worker honey bees which are living organisms. Not all living organisms response to touch. All living organisms do interact with environment and show evolution. Non living things might interact with environment but will not show evolution.
Evolutionary history of an organism is known as :
Phylogeny, (Gr. Phylon = tribe or race; genela = origin) is the origin and diversification of any taxon or the evolutionary history of its origin and diverstification. It is usually represented as a diagrammatic phylogenetic tree (that traces putative evolutionary relationships) i.e., dendrogram.
Palaentology is the study of fossils.
Ontogeny is the whole course of an individual's development and life history.
The taxon which includes related species is
Genus comprises a group of related species which has more characters in common in comparison to species of other genera. In the other words, genera are aggregates of closely related species. For example, potato and brinjal are two different species but both belong to the genus Solanum.
Which of the following features can be said to be a true defining feature of living beings without any exception?
The ability to respond to external stimuli is a defining feature of all living beings without any exception. This property, known as irritability or sensory ability, allows organisms to detect and respond to changes in their environment.
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