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Taxonomic Categories - The Living World Video Lecture - Class 11
FAQs on Taxonomic Categories - The Living World Video Lecture - Class 11
| 1. What are taxonomic categories and why are they important? |  |
Ans. Taxonomic categories are a hierarchical classification system used to categorize and organize living organisms based on their characteristics and evolutionary relationships. These categories, also known as taxonomic ranks, include domain, kingdom, phylum, class, order, family, genus, and species. They are important because they provide a standardized way to classify and group organisms, allowing scientists to study and understand the diversity of life on Earth.
| 2. How are taxonomic categories determined for a new species? | |
Ans. When a new species is discovered, taxonomic categories are determined based on its morphological, physiological, and genetic characteristics. Scientists compare these characteristics with known species to identify similarities and differences. The species is then placed into the appropriate taxonomic category based on its overall resemblance to other organisms. Additionally, DNA sequencing and molecular studies are often used to confirm the evolutionary relationships and classification of the new species.
| 3. What is the difference between a genus and a species? | |
Ans. A genus is a taxonomic category that is higher in rank than a species. It represents a group of closely related species that share common characteristics and ancestry. For example, the genus Panthera includes species like lions, tigers, and leopards. In contrast, a species is the most specific taxonomic category and represents a group of individuals that can interbreed and produce fertile offspring. Each species has a unique scientific name consisting of two parts: the genus name and the species name. For example, the scientific name for lions is Panthera leo.
| 4. How do taxonomic categories reflect evolutionary relationships? | |
Ans. Taxonomic categories reflect evolutionary relationships by grouping organisms based on their shared ancestry and evolutionary history. Organisms that are more closely related are placed in the same taxonomic category, while those that are less closely related are placed in different categories. The higher taxonomic categories, such as kingdom and phylum, represent broader groups that share common characteristics and evolutionary traits. As we move down the hierarchy to lower categories like genus and species, the groups become more specific and represent organisms that are more closely related.
| 5. Can taxonomic categories change over time? | |
Ans. Yes, taxonomic categories can change over time as new scientific discoveries are made and our understanding of evolutionary relationships improves. Advances in technology, such as DNA sequencing, have led to changes in the classification of organisms. For example, the reclassification of Pluto from a planet to a dwarf planet in 2006 was based on new criteria set by the International Astronomical Union. Similarly, as new species are discovered and more information becomes available, taxonomic categories may be revised to better reflect the true relationships between organisms.
Text Transcript from Video
hi my name is Mary Poppins ah and I'm an
adjunct professor of biology today we're
going to talk about taxonomic hierarchy
taxonomic hierarchy is just a really
fancy word for putting things where they
belong so you go into a store no matter
if you've been in this grocery store or
not you can kind of find out where
things are
because cereals with cereal fruit juice
with fruit and meat is in the meat
counter right so there's some order to
things well it's the same way with
taxonomic classification a scientist
like to put things in order so that we
can talk about it with one another and
we can understand the relationships that
these organisms have so what does all
this mean when classifying organisms
we're going to start at the most
inclusive or the biggest group now we're
going to will our way down to the
smallest or the species let's take an
example our mountain lion we're going to
take our mountain lion and classify it
all the way from domain to species our
mountain lion is going to be in domain
Eukarya or the eukaryotes it's then
going to be in kingdom Animalia or the
animal kingdom then no phylum Chordata
or the chordates these are going to be
organisms that have a backbone then
we're going to have class Mammalia these
are mammals mammals are going to be
organisms that have fur and produce milk
next we're going to have order the order
is Carnivora
this means that our mountain lions
belong to an order of all carnivores
next we have family family felidae
family felidae is going to be all big
cats next on the list is genus genus is
the Puma part of their scientific name
and of course last is the species
concolor a fun little way I have for you
to remember all these different levels
of classification and the orders they go
into goes a little something like this
dead Kings play cards on fat green
stools thanks for watching and if you
want to learn more about this subject
click on the link below or if you want
to learn more biology feel free to click
on any links around me and please rate
comment and subscribe to this channel or
maybe if you have ideas for more videos
so does an email a request at Mahalo
calm thanks for learning
adjunct professor of biology today we're
going to talk about taxonomic hierarchy
taxonomic hierarchy is just a really
fancy word for putting things where they
belong so you go into a store no matter
if you've been in this grocery store or
not you can kind of find out where
things are
because cereals with cereal fruit juice
with fruit and meat is in the meat
counter right so there's some order to
things well it's the same way with
taxonomic classification a scientist
like to put things in order so that we
can talk about it with one another and
we can understand the relationships that
these organisms have so what does all
this mean when classifying organisms
we're going to start at the most
inclusive or the biggest group now we're
going to will our way down to the
smallest or the species let's take an
example our mountain lion we're going to
take our mountain lion and classify it
all the way from domain to species our
mountain lion is going to be in domain
Eukarya or the eukaryotes it's then
going to be in kingdom Animalia or the
animal kingdom then no phylum Chordata
or the chordates these are going to be
organisms that have a backbone then
we're going to have class Mammalia these
are mammals mammals are going to be
organisms that have fur and produce milk
next we're going to have order the order
is Carnivora
this means that our mountain lions
belong to an order of all carnivores
next we have family family felidae
family felidae is going to be all big
cats next on the list is genus genus is
the Puma part of their scientific name
and of course last is the species
concolor a fun little way I have for you
to remember all these different levels
of classification and the orders they go
into goes a little something like this
dead Kings play cards on fat green
stools thanks for watching and if you
want to learn more about this subject
click on the link below or if you want
to learn more biology feel free to click
on any links around me and please rate
comment and subscribe to this channel or
maybe if you have ideas for more videos
so does an email a request at Mahalo
calm thanks for learning
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Nov 15, 2024 Last updated |
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