Alternation of generations means that plants produce:.a. only haploid multicellular organism b. only diploid multicellular organisms c. only diploid multicellular organisms with single-celled haploid gametes d. both haploid and diploid multicellular organism

d. both haploid and diploid multicellular organism

Explanation:

Alternation of generation simply means the alternation of life cycle of a sexually multicellular reproducing living organisms between the haploid state and the diploid state. It means both state of living exist at some points in the life of the organisms.

The correct option is d.

dogs is better and probably lizards.

b tumor cells have a cell wall instead of a membrane

explanation:

tumor cells different from normal cells because tumor cells have a cell wall instead of a membrane.