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
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 |
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 ______.
In Pheretima locomotion occurs with the help of ______.
Which of the following have the highest number of species in nature?
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 |
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?
What are flame cells?
______ was a greek philosopher who classified animals.
In which of the following the notochord is present only in embryonic stages?
Identify the phylum in which adults exhibit radial symmetry and larva exhibit bilateral symmetry.
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?
Animal with bilateral symmetry in ______.