Question

1. in observing an onion root tip, why are root tips used to study mitosis?

the cells are already stained and easily visible.
root tips contain cells that have completed mitosis.
root tips contain meristematic tissue, which has actively dividing cells.
the cells in root tips are very large.
question 8
1 pts

1. if a cell with 20 chromosomes undergoes mitosis, how many chromosomes will each daughter cell have?

5
40
20
10

Explanation:

Question 7

Meristematic tissue in root tips has actively dividing cells, which is ideal for studying mitosis. Cells are not already stained (need to be stained in lab), root tips don't contain cells that have completed mitosis (they are in various stages), and cell size isn't the reason (it's about cell division activity).

Mitosis is a process where a cell divides to produce two daughter cells that are genetically identical to the parent cell. So, the number of chromosomes in daughter cells is the same as the parent cell.

Answer:

Root tips contain meristematic tissue, which has actively dividing cells.

Question 8