Which group of plant have embryo but not vascular tissue?
The correct option is C Bryophyta
Oswald Tippo, University of Illiniois 1942, classified plant kingdom into two sub-kingdoms; Thallophyta (thalloid plant body without distinct alternation of generations and no embryo) and Embryophyta (organ level differentiation of plant body with regular alternation of sporophyte and gametophyte generations; embryo present). Cyanophyta (Blue green algae) and Chlorophyta (Green algae) are phyla under sub-kingdom Thallophyta which lack embryo; options A and D are incorrect. Division Tracheophyta and Bryophyta (thalloid, non-vascular plants) are placed under sub-kingdom “Embryophyta” which means that tracheaphytes have embryo. Tracheophytes are characterized by presence of lignified vascular tissues for conduction of water, mineral and food throughout the plant body. This makes option B incorrect. Bryophytes have embryo but lack vascular tissues; option C is correct. Thus, the correct answer is option C.