Gymnosperms are also called soft wood spermatophytes because they lack
(2) phloem fibres
(3) thick-walled tracheids
(4) xylem fibres
Compared with the gametophytes of the bryophytes, the gametophytes of vascular plants tends to be
(1) larger but to have smaller sex organs
(2) larger and to have large sex organs
(3) smaller and to have smaller sex organs
(4) smaller but to have larger sex organs
The gametophyte is not an independent, free living generation in
Archegoniophore is present in
A prokaryotic autotrophic nitrogen fixing symbiont is found in
Male and female gametophytes are independent and free-living in
Which one of the following has haplontic life cycle?
Phylogenetic system of classification is based on
(1) evolutionary relationships
(2) morphological features
(3) chemical constituents
(4) floral characters
Which one of the following is a vascular cryptogam?
Which one of the following is considered important in the development of seed habit?
(1) Dependent sporophyte
(3) Haplontic life cycle
(4) Free-living gametophyte