हिंदी

Write in brief about progressive changes in animal classification.

Advertisements
Advertisements

प्रश्न

Write in brief about progressive changes in animal classification.

संक्षेप में उत्तर
Advertisements

उत्तर

There were different methods of classification of animals.

  1. The first classification method was proposed by the Greek philosopher Aristotle. He considered characteristics such as body size, habits, and habitats of the animals. This approach was termed the artificial method of classification.
  2. Scientists like Theophrastus, Pliny, John Ray, Linnaeus, and others used the same artificial method.
  3. Further, sources were updated because science has advanced, and new ways of classifying things were proposed. Linnaeus and others.
  4. The ‘Natural system of classification’ was then proposed. This system of classification was based on criteria such as body organisation, cell types, chromosomes, and biochemical properties.
  5. Later, Dobzhansky and Meyer gave a system of classification based on evolution.
  6. In 1977, Carl Woese also proposed the three-domain system of animal classification.
shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 6: Animal Classification - Exercises [पृष्ठ ७५]

APPEARS IN

बालभारती Science and Technology 2 [English] Standard 10 Maharashtra State Board
अध्याय 6 Animal Classification
Exercises | Q 3. | पृष्ठ ७५

संबंधित प्रश्न

If you are given a specimen, what are the steps that you would follow to classify it?


Distinguish between intracellular and extracellular digestion.


What are the reasons that you can think of for the arthropods to constitute the largest group of the animal kingdom?


Label the body organization of human in the following figure:


The largest division of the living world is ______.


Species is the ______ unit of classification. 


Which of the following have the highest number of species in nature? 


Which of the following is a crustacean?


Match the following columns and select the correct option.

  Column – I   Column – II
(p) Pila (i) Devil fish
(q) Dentalium (ii) Chiton
(r) Chaetopleura (iii) Apple snail
(s) Octopus (iv) Tusk shell

Compare Schizocoelom with enterocoelom.


In which of the following the notochord is present only in embryonic stages?


Examine the figures of diploblastic (i) and triploblastic (ii) organization in animals given below and identify the labelled parts A to D.


In some animal groups, the body is found divided into compartments with serial repitition of at least some organs. This characteristic feature is called ______.


Match the following list of animals with their level of organisation.

Division of Labour Animal
Column I  Column II
A. Organ level i. Pheretima
B. Cellular aggregate level ii. Fasciola
C. Tissue level ii. Spongilla
D. Organ system level iv. Obelia

Choose the correct match showing division of labour with animal example.


Differentiate between a diploblastic and a triploblastic animal.


Sort out the animals on the basis of their symmetry (radial or bilateral) coelenterates, ctenophores, annelids, arthropods, and echinoderms.


What is the relationship between germinal layers and the formation of body cavity in case of coelomate, acoelomates and pseudocoelomates?


Complete the paragraph using proper words:

(Asymmetrical, Paramecium, Equal, imaginary, central, insects, rats, bird, three, unequal)

If body of any animal is cut through ______ axis of body, it may or may not produce two equal halves. Depending upon this property, there are different types of animal bodies. In the case of ______ body, there is no any such imaginary axis of the body through which we can get two equal halves. For example Amoeba, ______ some sponges. In radial symmetry type of body, if imaginary cut passes through central axis but any plane of body, it gives two ______ halves. For example Starfish. In case of this animal, there are five different planes passing through ______ axis of body through which we can get two equal halves. In Bilateral symmetry type of body, there is only one such imaginary axis of body through which we can get two equal halves. For example: ______ fishes, frog, birds, human, etc.


Animal with bilateral symmetry in ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×