Which of these statements most accurately describes how carbon dioxide enters a leaf?
a. co2 is carried by water in leaf veins.
b. co2 is pulled in by leaf veins.
c. co2 diffuses by way of the stomata.
d. co2 enters a leaf through osmosis.

CO2 diffuses by way of the stomata (ans C)

Explanation:

On the surface of the leaf there are tiny pores are present known as Stomata and CO2 from the air diffuses to the plants through the tiny pores (stomata).

Stomata let CO2 reach the others cells in the leaves and make carbohydrates, this process is known as photosynthesis.

Photosynthesis is the process in which energy comes from sun light turns into chemical energy.

prophase: we can observe the chromosomes to coil up and condense. they become visible. nuclear membrane and envelope disintigrate.s

metaphase: chromosomes align at the center, the metaphase plate. spindle fibers attach to centromeres of the sister chromatids. they meet at kinetochores.

anaphase: sister chromatids are pulled towards each opposing centromere, set on different poles.

telophase: chromosomes are now clustered up only on either sides of the cell. nuclear membranes reform, and a new cell wall forms along the cell plate. this will lead to cytokinesis, the process that divides the cell membrane and forms the cell wall.