Question

1. students observe onion cells from a tip of the root with a light microscope while studying mitosis.

which statement best identifies why students would observe the root tip of an onion to see the stages of mitosis?
the tip of the root is where photosynthesis is taking place.
the tip of the root is where the plant is doing the most growing.
the tip of the root is where the most water is being absorbed.
the tip of the root is where sexual reproduction is occurring.

Explanation:

The root tip is the region where active cell division (mitosis) occurs for growth. Photosynthesis occurs in leaves (not root tips). Water absorption is mainly in the root - hair zone (not the tip). Sexual reproduction (like in flowers) is not in root tips. Mitosis for growth is key in the root tip.

Answer:

The tip of the root is where the plant is doing the most growing.