In the material cycle shown below, which processes are represented by letters A and B A- A-excretion, B-respiration

B- A-transpiration, B-excretion

C- A-photosynthesis, B-transpiration

D- A-respiration, B- photosynthesis

Consider this plant cell which organelle is labeled g

Despite the differences in mature plant cells, all of them are derived from meristem cells. the three major types of tissue systems develop from the meristem. meristems develop cells in all but which tissue?

According to the cell theory, which describes cells? a. all organisms are composed of multiple cells. b. all cells have the same structure and function. c. cells are found in everything on earth. d. living organisms are not created spontaneously