Advertisements
Advertisements
प्रश्न
Write in brief about progressive changes in animal classification.
उत्तर
There are various scientists which have contributed to biological classification and based on their observations we have the current system of classification:
- Aristotle (384-322 BC): Also known as the father of classification, he classified animals on the basis of two points: presence or absence of blood, whether they live on land, air, or water.
- Carolus Linnaeus (1707-1778): Also known as the father of taxonomy, he classified living things into two kingdoms- Plantae and Animalia.
- Ernst Haeckel (1834-1919): He proposed the three kingdom classifications- Plantae, Animalia, and Protista.
- Robert Whittaker (1920-1980): He gave the five-kingdom classification- Monera, Protista, Fungi, Plantae, and Animalia.
- Carl Woese (1928-2012): He gave the classification where he classified all the organisms into three categories- Eukarya domain, Bacteria domain, and Archae domain.
संबंधित प्रश्न
Distinguish between intracellular and extracellular digestion.
What is the exact difference between grades of organization and symmetry? Explain with examples.
Complete the following chart.
Body cavity | Germ Layer | Phylum |
Absent | ______ | Porifera |
Absent | Triploblastic | ______ |
Pseudocoelom | ______ | Aschelminthes |
Present | ______ | Arthropoda |
Write the correct co-relation:
Annelida: Earthworm :: Platyhelminthes: _______
Label the body organization of human in the following figure:
Draw a neat and labelled diagram.
Jellyfish
The largest division of the living world is ______.
Species is the ______ unit of classification.
Which of the following is a crustacean?
Lateral line sense organs occur in ______.
Identify the structure that the archenteron becomes in a developing animal.
Observe the animal below and answer the following questions.
- Identify the animal.
- What type of symmetry does this animal exhibit?
- Is this animal Cephalized?
- How many germ layers does this animal have?
- How many openings does this animal’s digestive system have?
- Does this animal have neurons?
______ was a greek philosopher who classified animals.
______ is a fluid-filled body cavity.
In some animal groups, the body is found divided into compartments with serial repitition of at least some organs. This characteristic feature is called ______.
Which group of chordates possess sucking and circular mouth without jaws?
Differentiate between a diploblastic and a triploblastic animal.
Provide appropriate technical term in the space provided.
Blood-filled cavity in arthropods ______.
Sort out the animals on the basis of their symmetry (radial or bilateral) coelenterates, ctenophores, annelids, arthropods, and echinoderms.