Illustrate the taxonomical hierarchy with suitable examples of a plant and an animal.
The arrangement of various taxa in a hierarchical order is called taxonomic hierarchy. The hierarchy indicates the various levels of kinship. The number of similar characters of categories decreases from lowest rank to highest rank. The hierarchical system of classification was introduced by Linnaeus.
The hierarchy of major categories is:
Species —►Genus-►Family —► Order—► Class
Kingdom -4— Phylum or Division
Increasing specificity – â–º Decreasing specificity
Classification of a plant (Wheat):
Kingdom – Plantae
Division – Angiospermae
Class – Monocotyledonae
Order – Poales
Family – Poaceae
Genus – Triticum
Species – aestivum
Classification of an animal (Housefly):
Kingdom – Animalia
Phylum – Chordata
Class – Insecta
Order – Diptera
Family – Muscidae
Genus – Musca
Species – domestica
Some of the properties of tissues are not the constituents of its cells. Give three examples to support the statement.
Match the following and choose the correct option.
A. | Family | (0 | tuberosum |
B. | Kingdom | (ii) | Polymoniales |
C. | Order | (iii) | Solarium |
D. | Species | (iv) | Plantae |
E. | Genus | (v) | Solanaceae |
Options:
(a) D—(i), C—(ii), E—(iii), B—(iv), A-(v)
(b) E—(i), D—(ii), B—(iii), A—(iv), C-
(d) E—(i), €—(ii), B—-(iii), A-(iv), D-(v)
Amoeba multiplies by mitotic cell division. Is this phenomena growth or reproduction? Explain.
Given below is the scientific name of mango. Identify the correctly written name.
Mangifera Indica Mangifera indica
Brassica compestris Linn
a. Give the common name of the plant.
b. What do the first two parts of the name denote?
c. Why are they written in italics?
d. What is the meaning of Linn written at the end of the name?
What is the similarity and dissimilarity between "whole moong daal"and "broken moong daal"in terms of respiration and growth? Based on these parameters classify them into living or nonliving?
Which is the largest botanical garden in the world? Name a few well known botanical gardens in India.
Try to collect all the currently accepted meanings for the word ‘species’. Discuss with your teacher the meaning of species in case of higher plants and animals on one hand, and bacteria on the other hand.
Linnaeus is considered as Father of Taxonomy. Name two other botanists known for their contribution to the field of plant taxonomy.
Can you identify the correct sequence of taxonomical categories?
(a) Species —> Order —> Phylum —> Kingdom
(b) Genus—) Species—> OrderKingdom
(c) Species —> Genus —>Order —> Phylum
Properties of cell organelles are not always found in the molecular constituents of cell organelles. Justify.
A ball of snow when rolled over snow increases in mass, volume and size. Is this comparable to growth as seen in living organisms? Why?
Define and understand the following terms:
(i) Phylum (ii) Class (iii) Family
(iv) Order (v) Genus
In a given habitat we have 20 plant species and 20 animal species. Should we call this as ‘diversity' or ‘biodiversity'? Justify your answer. –
Brinjal and potato belong to the same genus Solarium, but to two different species. What defines them as separate species?
A student of taxonomy was puzzled when told by his professor to look for a key to identify a plant. He went to his friend to clarify what ‘Key' the professor was referring to? What would the friend explain to him?