The small multicellular spheres by which some plants reproduce a sexually is called A. protonemas

B. archegonia

C. gemmae

D. rhizoids

Which of the following statements about archaea and bacteria is true? a. neither is single-celled. b. they both have nuclear membranes. c. neither reproduces by binary fission. d. they both lack a nuclear membrane.

How do you know that the plant cells in these two images have different jobs, or functions? a. because all plant cells serve different functions b. because they are two different colors c. because their dna are different d. because their structures are different

49 ! how are energy cycles and growth cycles related?