Which of the following is not a reason green algae are classified as plants?

they have cellulose in their cell walls.
they have chlorophyll a and b.
they have genes similar to genes in land plants.
they are single-celled organisms.

what have scientists found to be the most efficient and effective way to insert new sequences into an individual? a-scientists have created genetically altered foods that release dna during digestion. b-scientists use viruses to insert specific gene sequences. c-scientists irradiate genes so that they can be absorbed through the skin.

we would need to see the picture to answer it