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Define a taxon. What is meant by taxonomic hierarchy? Give a flow diagram from the lowest to highest category for a plant and an animal. What happens to the number of individuals and number of shared characters as we go up the taxonomic hierarchy?
Taxon is a group of organisms representing any level of category, e.g., sparrow, flatworm, lion, crocodile, etc. Taxonomic hierarchy is the system of arranging taxonomic categories in a descending order with species at the base. The number of individuals increases as we go up in taxonomic hierarchy.Read more
Taxon is a group of organisms representing any level of
See lesscategory, e.g., sparrow, flatworm, lion, crocodile, etc.
Taxonomic hierarchy is the system of arranging
taxonomic categories in a descending order with species
at the base.
The number of individuals increases as we go up in
taxonomic hierarchy. The number of shared or correlated
characters decreases as we go up in a taxonomical hierarchy.
Brassica campestris Linn. (i) Give the common name of the plant (ii) What do the first two parts of the name denote? (iii) Why are they written in italics? (iv) What is the meaning of Linn written at the end of the name?
(i) Common name Mustard. (ii) Parts of the name First part represents the genus or generic name, while the second part represents the specific name. (iii) Italics In order to highlight their Latin origin. (iv) Linn It is the abbreviation of the name of scientist Linnaeus, who gave the name to the plRead more
(i) Common name Mustard.
See less(ii) Parts of the name First part represents the genus
or generic name, while the second part represents
the specific name.
(iii) Italics In order to highlight their Latin origin.
(iv) Linn It is the abbreviation of the name of scientist
Linnaeus, who gave the name to the plant.
What precautions must you observe while in a zoological museum?
We must observe following precautions while visiting a museum (i) Do not touch or displace any specimen or the container containing it. (ii) Do not make noise or any kind of disturbance in a museum. (iii) Carefully examine each specimen and make notes in a notebook. (iv) Contact the security personnRead more
We must observe following precautions while visiting
See lessa museum
(i) Do not touch or displace any specimen or the
container containing it.
(ii) Do not make noise or any kind of disturbance in
a museum.
(iii) Carefully examine each specimen and make
notes in a notebook.
(iv) Contact the security personnel or any other
authority present in case of any problem.
How do you prepare your own herbarium sheets? What are different tools you carry with you while, collecting plants for the preparation of a herbarium? What information should a preserved plant material on the herbarium sheet provide for taxonomic studies?
For the preparation of herbarium sheets, a sheet of about 29 x 41 cm is cut from chart paper. Dried specimens are mounted on the sheets with the help of glue or cellotape. A label is pasted on sheets at lower right corner of the sheet. Tools for collection are (i) digger (iii) scissors (ii) pruningRead more
For the preparation of herbarium sheets, a sheet of
See lessabout 29 x 41 cm is cut from chart paper. Dried
specimens are mounted on the sheets with the help of
glue or cellotape. A label is pasted on sheets at lower
right corner of the sheet.
Tools for collection are
(i) digger
(iii) scissors
(ii) pruning knife
(iv) vasculum
(v) polythene bags
(vi) old newspapers
(vii) blotting papers (viii) plant press
(ix) field notebook
(x) magnifying glass
Information from herbarium sheets. The label of
herbarium sheets has information like scientific name
of plant, family, common and English name, local
name, collector’s name, place, time and date of
collection.
In which fields taxonomical aids are helpful? Why taxonomic aids are used in these studies? Which different taxonomical aids are used by the biologists?
Taxonomical aids are helpful in various fields such as agriculture, forestry, industry and in knowing our bioresources. All the above mentioned studies need correct identification and classification of organisms. Identification of organisms require intensive laboratory and field studies. BiologistsRead more
Taxonomical aids are helpful in various fields such as
See lessagriculture, forestry, industry and in knowing our
bioresources.
All the above mentioned studies need correct
identification and classification of organisms.
Identification of organisms require intensive laboratory
and field studies.
Biologists use herbarium, botanical gardens, museum,
zoological parks and taxonomical keys while doing
taxonomical studies.
What are obligate categories? How these are different from intermediate categories. List out some intermediate categories.
The taxonomic categories which are always used in hierarchical classification of organisms are called obligate categories. The taxonomic categories from species to kingdom are broad categories or obligate categories. However, taxonomists have developed sub-categories in this hierarchy to facilitateRead more
The taxonomic categories which are always used in
See lesshierarchical classification of organisms are called
obligate categories.
The taxonomic categories from species to kingdom are
broad categories or obligate categories. However,
taxonomists have developed sub-categories in this
hierarchy to facilitate more sound and scientific
placement of various taxa.
Intermediate categories are subphyla, subclasses,
suborders. subfamilies, subgenera, varieties or subspecies.
Write the relation between taxonomic category and taxonomic hierarchy. Fill in the missing category in following hierarchical arrangement, in ascending order.
The category is a part of overall taxonomic arrangement called taxonomic category. All the categories together constitute the taxonomic hierarchy. A — Phylum, B —Order. C — Family and D — Species
The category is a part of overall taxonomic arrangement
See lesscalled taxonomic category. All the categories together
constitute the taxonomic hierarchy.
A — Phylum, B —Order. C — Family and D — Species
Define a taxon. Give some examples of taxa at different hierarchical levels.
The different taxonomical categories are-species, genus, family, order, class, phyla/division and kingdom. Some examples of taxa at different hierarchical levels are (i) Mangifera indica is a taxon and species is its category. (ii) The taxon of all the bacteria is Monera and the category is kingdom.Read more
The different taxonomical categories are-species, genus,
See lessfamily, order, class, phyla/division and kingdom. Some
examples of taxa at different hierarchical levels are
(i) Mangifera indica is a taxon and species is its category.
(ii) The taxon of all the bacteria is Monera and the
category is kingdom.
(iii) The taxon of fishes is Pisces and the category is class.
What different criteria would you choose to classify people that you meet often?
We can recognise and classify the people we often meet on the basis of their (i) language(ii) behaviour (iii) geographical distribution (iv) sex (v) weight (vi) height, etc.
We can recognise and classify the people we often meet
See lesson the basis of their
(i) language(ii) behaviour (iii) geographical distribution
(iv) sex (v) weight (vi) height, etc.
Why are classification systems changing every now and then?
Now a days, biologists use several principles and criteria to classify the organisms. These are based on morphology, anatomy, cytology, physiology, phylogeny, reproduction, evolution, biochemistry and genetics. Thus, there are several characteristic differences which help in classification. This isRead more
Now a days, biologists use several principles and criteria
See lessto classify the organisms. These are based on
morphology, anatomy, cytology, physiology, phylogeny,
reproduction, evolution, biochemistry and genetics. Thus,
there are several characteristic differences which help in
classification. This is the reason of change in
classification systems every now and then.