Mitosis and meiosis compared

Grade 9 Science Worksheet - Building Confidence

Circle the best answer.

1. Read this first

   Cell division counts for an animal, usual case (facts from OpenStax Biology 2e)

   process	divisions	cells made	chromosome number
   mitosis	1	2	2n to 2n
   meiosis	2	4	2n to n

2. 1.

   Ari reads the card table. Which choice says what one round of mitosis makes from one starting cell?

   • 2 cells, after 1 division
   • 4 cells, after 2 divisions
   • 1 cell, after 1 division
   • 4 cells, after 1 division

3. Cell division jobs for an animal (facts from OpenStax Biology 2e)

   process	daughter cells	where it happens	purpose
   mitosis	identical	body cells that divide	growth and repair
   meiosis	different from each other	cells that make egg and sperm cells	making egg and sperm cells

4. 2.

   Bo reads the card table. Which choice describes the daughter cells made by mitosis?

   • Identical to each other, with half the chromosomes
   • Different from the parent cell but identical to each other
   • Different from each other, with a new mix of chromosomes
   • Identical to each other and to the parent cell
5. 3.

   Jun reads that a young animal grows as its body cells divide. Which choice names the process and where it happens?

   • Meiosis, in body cells that divide
   • Meiosis, in cells that make egg and sperm cells
   • Mitosis, in body cells that divide
   • Mitosis, in cells that make egg and sperm cells
6. 4.

   Kira reads the card table. Which job does meiosis do in an animal?

   • Makes new body cells so the animal can grow
   • Repairs body tissue by copying cells
   • Makes egg and sperm cells with half the chromosomes
   • Makes egg and sperm cells that copy the body cell exactly

7. Cell division counts for an animal, usual case (facts from OpenStax Biology 2e)

   process	divisions	cells made	chromosome number
   mitosis	1	2	2n to 2n
   meiosis	2	4	2n to n

8. 5.

   Luz reads a card: two divisions in a row, four cells. Which choice names the process and what happens to its chromosome number?

   • Mitosis, which makes four cells from one
   • Mitosis, which keeps the chromosome number the same
   • Meiosis, which halves the chromosome number
   • Meiosis, which makes two cells from one
9. 6.

   Milo fills the blank on the card table. How many divisions does meiosis take?

   • 2
   • 4
   • 3
   • 1
10. 7.

    Noah fills the blank on the card table. What belongs in the chromosome number box for mitosis?

    • n to n
    • 2n to 2n
    • 2n to n
    • n to 2n

11. Cell division jobs for an animal (facts from OpenStax Biology 2e)

    process	daughter cells	where it happens	purpose
    mitosis	identical	body cells that divide	growth and repair
    meiosis	different from each other	cells that make egg and sperm cells	?

12. 8.

    Pia fills the blank on the card table. What belongs in the purpose box for meiosis?

    • Joining an egg cell to a sperm cell
    • Growth and repair of body tissue
    • Making egg and sperm cells
    • Making identical copies of body cells

13. Use this

    Two ways to reproduce (facts from OpenStax Biology 2e), 2 rows. Columns: way, starting cells, how offspring begin, offspring. asexual, such as budding yeast, 1 parent, a bud forms and the nucleus divides by mitosis, match the parent. sexual, usually 2 parents, an egg cell and a sperm cell join, differ from each other and from the parents.

14. 9.

    Ren reads that a yeast cell forms a bud that pinches off. Which choice names the reproduction and the division used?

    • Asexual, using meiosis
    • Sexual, because a new cell forms
    • Asexual, using mitosis
    • Sexual, using mitosis
15. 10.

    Zee reads that an animal's egg cell and sperm cell join to start a new organism. Which choice names this reproduction?

    • Asexual, because one parent is needed
    • Sexual, because two cells join
    • Asexual, because meiosis made the cells that joined
    • Sexual, because mitosis made both cells