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प्रश्न
You are given leech, Nereis, Scolopendra, prawn and scorpion; and all have segmented body organisation. Will you classify them in one group? If no, give the important characters based on which you will separate these organisms into different groups.
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उत्तर
No, we will not classify all the given organisms in one group because there are some characteristic features by which these organisms can be separated from each other and placed in two different group.
Leech and Nereis are placed in Phylum Annelida because:
- (i) Both of these have metamerically segmented body i.e. body is divided internally into many segments by septa. Body segments are lined up one after the other from head to tail.
- (ii) These animals have a closed circulatory system.
Scolopendra, Prawn, and scorpion are placed in Phylum Arthropoda because :- Their body is externally segmented and consists of the head thorax and abdomen.
- These animals have an open circulatory system and the coelomic cavity is blood-filled called hemocoel.
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संबंधित प्रश्न
Define and understand the following term:
Class
Define and understand the following term:
Genus
Illustrate the taxonomical hierarchy with suitable examples of a plant and an animal.
Name one example of the animal which shows the following characteristics:
Star-shaped body:
How are organisms classified?
Classify the following organisms based on the absence/presence of true coelom (i.e., acoelomate, pseudocoelomate and coelomate)
Spongilla, Sea anemone, Planaria, Liver fluke Wuchereria, Ascaris, Nereis, Earthworm, Scorpion, Birds, Fishes, Horse.
Name the three germ layers.
In the system of classification, which one of the following is NOT a category?
Genus represents ______.
Match the following and choose the correct option:
| Column I | Column II |
| A. Family | i. Tuberosum |
| B. Kingdom | ii. Polymoniales |
| C. Order | iii. Solanum |
| D. Species | iv. Plantae |
| E. Genus | v. Solanacea |
