Name the stage of mitosis from a picture

Grade 9 Science Worksheet - Building Confidence

Circle the best answer.

1. 1.

   “model, not to scale” Ari studies a drawing of a dividing cell. Label A points to the narrow spot where the two rods of one chromosome are joined. What is A?

   • The centromere
   • The cleavage furrow
   • The spindle
   • The nucleolus
2. 2.

   Cell drawing (model, not to scale). Esme looks at a cell in interphase. Label C points to the loose, tangled threads of DNA inside the nucleus. What is C?

   • Condensed chromosomes, each with two chromatids
   • Chromatin, loosely packed DNA with proteins
   • A cell plate, a new wall between two cells
   • Spindle fibers, threads that pull chromosomes
3. 3.

   The front of the card reads sister chromatids. The back is blank. Jun makes flash cards for mitosis. Which meaning belongs on the card for the term sister chromatids?

   • Two identical copies of one chromosome, joined at a centromere
   • Two different chromosomes that are joined at a centromere
   • Two spindle fibers that pull on one chromosome at its centromere
   • Two daughter cells that form when mitosis is finished
4. 4.

   The front of the card reads cleavage furrow. The back is blank. Kira makes a flash card for the term cleavage furrow. Which meaning belongs on the card?

   • An inward pinch that splits an animal cell in two
   • The line where chromosomes sit in the middle of a cell
   • A new wall that grows across the middle of a plant cell
   • An inward pinch that splits a plant cell in two
5. 5.

   The front of the card reads cell plate. The back is blank. Luz makes a flash card for the term cell plate. Which meaning belongs on the card?

   • The line where the chromosomes sit in the middle
   • A ring of threads that squeezes an animal cell
   • A groove that pinches a plant cell in half
   • A new wall that forms between two daughter plant cells
6. 6.

   Milo looks at drawing P of a dividing cell. Which stage of mitosis does it show?

   • Metaphase
   • Anaphase
   • Prophase
   • Telophase
7. 7.

   Noah looks at drawing P of a dividing cell. Which stage of mitosis does it show?

   • Prophase
   • Telophase
   • Metaphase
   • Anaphase
8. 8.

   Cycle wheel (model, not to scale). Ren fills in a cycle wheel. Box A shows an animal cell with 4 chromosomes lined up across the middle. Which name goes in box A?

   • Metaphase
   • Interphase
   • Anaphase
   • Cytokinesis

9. Read this first

   Cycle wheel (model, not to scale)

   a circle cut into arcs in order: G1, S, G2, M (mitosis) and cytokinesis. The M arc is opened out into boxes in order: prophase, A, B, telophase. Box A: a plant cell with 6 chromosomes lined up across the middle. Box B: the same cell with 12 single rods in two groups of 6, one group at each end.

10. 9.

    Tala fills in a cycle wheel. In box B a plant cell has 12 single rods in two groups of 6, one group at each end. Which name goes in box B?

    • Metaphase
    • Interphase
    • Anaphase
    • Cytokinesis

11. Cycle wheel (model, not to scale)

    a circle cut into arcs in order: G1, S, G2, M (mitosis) and cytokinesis. A drawn cell sits at G2, just before M: an animal cell with one round nucleus inside a nuclear envelope. Inside the nucleus is a loose tangle of thin threads, and no X shapes are drawn.

12. 10.

    Zee labels the cell drawn at G2. Its DNA was copied in S. In what form does that DNA sit inside the nucleus?

    • a ring of spindle fibers
    • two daughter nuclei, one at each end
    • semi-condensed chromatin threads
    • tightly packed, X-shaped chromosomes