Xylem and phloem fiber cells
Threatened is the definition used when describing a species at risk of extinction
Answer:
Glucose can used as a substrate and broken down in plant cells by the process of respiration. The chemical energy released by respiration can be used by the plant for cellular activities such as protein synthesis or cell division
Explanation:
They are all necessary for photosynthesis to occur.
Answer:
plant leaves contain openings called stomata, which allow the diffusion of gas exchange
