In $Dryopteris$ (fern),the permanent roots are .........

The presence of rhizoids in saprophytic plants is a characteristic of which group?

Which of the following is known as the 'Adder's tongue fern'?

Which of the following are seedless plants that possess vascular tissues?

In $Selaginella$,when the sporophyte develops directly from the female gametophyte other than the oosphere,the condition is called:

Which of the following is $NOT$ a characteristic of the main plant body in Pteridophytes?