Skip to main content

NCERT solution

(1)

Identify the correct sequence of taxonomical categories?
(a) Species - Order - Phylum - Kingdom
(b) Genus - Species - Order - Kingdom
(c) Species - Genus - Order- Phylum



SOLUTION
(a) and (c) represent correct sequences of taxonomic categories as the correct hierarchical arrangement of taxonomic categories in ascending order is
Species → Genus → Family → Order → Class → Phylum → Kingdom
In sequence (b), species should have been followed by genus. Therefore, it does not represent the correct sequence.



                              Concept


01
 
DEFINITION

Hierarchical of classification groups
  • Carolus von Linnaeus created a hierarchical classification system using seven taxonomic categories.
  • Kingdom - Top most taxonomic category.
  • Phylum - Term used for animals while its synonym division is used for plants.
  • Class - One or more than one order makes a class.
  • Order - One or more than one similar families constitute order.
  • Family - Collection of similar genera.
  • Genus - Group of similar species.
  • Species - Group of population which is similar in form, shape and reproductive features so that fertile sibling can be produced.

Comments

Popular posts from this blog

Respiration in plants concept 14

01   DEFINITION Cellular respiration Cellular respiration is the exchange of gases (oxygen and carbon dioxide) between blood and cells or within the cell. It is the biochemical pathway to release energy. 02   DEFINITION Respiration and burning Respiration is also called as a process to burn nuteirnts in the presence of oxygen to produce energy. But still different from burning. The difference are as follows: Respiration Burning/combustion 1. It occurs in series of chemical steps i.e., stepped process. It occurs in a single step. 2. It is carried out by enzymes. It is carried out by heat. 3. It is a biochemical process. It is a physiochemical process. 4. Energy is liberated as ATP and heat. Energy is liberated as heat and light. 5. No light energy is produced. Light energy is produced. 6. It takes place inside a cell. It does not takes place inside a cell. 7. It occurs at body temperature. It occurs at high temperature. 03  ...

Chemical coordination and integration contact 22

01   DEFINITION Diagrammatic representation of hormones produced in Human body Diagrammatic representation of the various endocrine hormones produced by the glands and tissues in a human body. 02   DEFINITION Endocrine glands Endocrine glands are glands of the endocrine system that secrete their products, hormones, directly into the blood rather than through a duct.  The major glands of the endocrine system include the pineal gland, pituitary gland, pancreas, ovaries, testes, thyroid gland, parathyroid gland, hypothalamus and adrenal glands. 03   DEFINITION Hormones from anterior pituitary gland Hormones from anterior pituitary gland are as follows: Growth hormones: Promote growth of whole body, particularly of the skeleton. Thyroid stimulating hormone: Stimulates thyroid to secrete thyroxine. Adrenocorticotropic hormone: Stimulate adrenal cortex. Gonadotrophic hormone: Regulates the activity of gonads...

Chapter-2 biological classification ( concepts ) class 11

History of classification Aristotle, the Greek philosopher, classified animals based on whether they live on land, in water or in the air. Charles Darwin put forward the idea of evolution in 1859, in his book, The Origin of Species. Ernst Haeckel, Robert Whittaker and Carl Woese have tried to classify living organisms into broad categories, called kingdoms. Carolus Linnaeus classified all the living organisms into two kingdoms namely, Plantae and Animalia. Robert Whittaker, in 1969 proposed Five kingdom classification of living organisms. 02 DEFINITION Moneran characteristics of bacteria Habitat - Monerans are found everywhere in hot springs, under ice, in deep ocean floor, in deserts and on or inside the body of plants and animals. Nutrition - Autotrophs, heterotrophs, parasitic, symbiotic, commensalism, mutualism.  Respiration in these organisms vary, they may be obligate aerobes, obligate anaerobes and facultative anaerobes. Circul...