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Question

Which of the following are homosporous pteridophytes?
I. Selaginella      II. Lycopodium  
III.  Salvinia       IV. Equisetum 


Your Answer
A
I and IV only
Your Answer
B
II and III only
Correct Answer
C
II and IV only
Your Answer
D
III and IV only

Solution

The correct option is C II and IV only
Pteridophytes are classified into two types depending on the types of spores - homosporous and heterosporous. In homosporous pteridophytes, all the spores are of similar kinds. Lycopodium and Equisetum are homosporous pteridophytes. 
In heterosporous, two kinds of spores (macro  and micro spores) are produced. Selaginella and Salvinia are heterosporous pteridophytes.

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