Which of the following statement is incorrect w.r.t. Azolla?
(a) It is an aquatic water fern
(b) It is used as biofertilizer
(c) It is homosporous vascular cryptogam
(d) It shows symbiotic association with alga Anabaena which fixes atmospheric nitrogen
Which of the following pteridophyte is the source of anthelmintic drug?
Select the odd one w.r.t. members of class Pteropsida
Simplest type of stele is
Select the incorrect match w.r.t. pteridophyta.
Select the correct option w.r.t. Marsilea.
Read the following statements w.r.t. pteridophytes.
(a) They are soil binders
(b) First terrestrial plants
(c) First tracheophytes
(d) Dominant phase is differentiated into true stem, leaves and roots
(e) Sporophyte is an independent plant
Choose the correct answer.
_______ stems are used in scouring and polishing of metals
Which of the following pteridophytes bear strobili?
