These are chlorophyll bearing, thalloid and simple thallophytes are placed in algae chlorophyll photosynthetic pigment) bearing thalloid plants. They synthesize their own food. Hence, algae are autotrophic (fungi lack chlorophyll and are heterotrophic). Besides, algae exhibit all the characteristics of thallophyta. They differ from bryophyta in many vegetative and reproductive features, such as absence of jacketed sex organs and formation of embryo.