Question:
Identify the incorrect pair :
Identify the incorrect pair :
Updated On: May 1, 2026
- Sphenopsida – Adiantum
- Pteropsida – Dryopteris
- Psilopsida – Psilotum
- Lycopsida – Selaginella
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The Correct Option is A
Solution and Explanation
To identify the incorrect pair from the provided options, we need to understand the classification of different plant groups based on their evolutionary characteristics:
- Sphenopsida: This class includes plants commonly known as horsetails. The representative genus for Sphenopsida is Equisetum. Therefore, Adiantum does not belong to Sphenopsida, making this pair incorrect.
- Pteropsida: This class includes ferns and flowering plants. Dryopteris is a type of fern and correctly belongs to Pteropsida.
- Psilopsida: This class is characterized by primitive vascular plants, and Psilotum is a correct example of this group.
- Lycopsida: This class includes club mosses and spike mosses. Selaginella is an example of Lycopsida, making this pair correct.
In summary, the incorrect pair is Sphenopsida – Adiantum. Adiantum, commonly known as 'maidenhair fern', actually belongs to the Pteropsida class.
Thus, the provided option that contains the incorrect pairing is Sphenopsida – Adiantum.
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