Metameric segmentation is the characteristic of:
- Platyhelminthes and Arthropoda
- Echinodermata and Annelida
- Annelida and Arthropoda
- Mollusca and Chordata
The Correct Option is C
Solution and Explanation
Both Annelida (e.g., earthworms) and Arthropoda (e.g., insects, crustaceans) exhibit metameric or segmented body plans, where the body is divided into distinct segments or repeating units along the length of the organism. This segmentation allows for greater flexibility and specialization of body parts.
So, the correct option is (C): Annelida and Arthropoda.
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Concepts Used:
Biodiversity and Conservation
The term ‘biodiversity’ is derived from the two words- ‘bios' which means life and ‘diversity’ i.e, differentiation or variation. Edward Wilson, the sociobiologist was the first to popularise the term ‘biodiversity’ in the year 1992. The term implies the occurrence of various plants and animals along with their variants such as biotypes, ecotypes and genes on earth. In our biosphere, the immense diversity or heterogeneity remains not only at the species level but also, at every level of biological organization that ranges from macromolecules in the cells to biomes.
Biodiversity and Conservation is a topic covered under the fifteenth chapter and Unit 5 of NCERT class 12 biology.