I think there's only one, and it's that they're autotrophs
They share their photosynthetic pigments and their cell wall composition.
Green algae due to the presence of chlorophyll a and b, as well as the presence of a 'whip-like' flagella; 'higher plants' and green algae share these characteristics.
they share peee
All are embryophytes, and have evolved from algae
chloroplasts and cell walls
They share chlorophyll.
being a prokaryote
All plants are Autotrophs and are Multicellular.
First they share Vascular Tissue. Second they share Pollen to produce.
The major difference between plants and algae is that plants have connective tissues for the transportation of water in the entire plant body while every cell of algae absorbs water from the source on its own. There is no connective tissue is algae. Secondly, the reproduction system of plants is more developed while that of algae is primitive. Thirdly, algae can be single-celled while plants are multicellular organisms. Another area of difference between plants and algae is photo respiration. Moreover, it is argued by the scientists that algae and plants may share the same ancestor but algae cannot be classified as plants.
Kingdom
Characteristics shared by all plants are cell walls, cuticles, and the fact that they reproduce with spores and sex cells.