Name the stage of mitosis from a picture
Grade 9 Science Worksheet
Circle the best answer.
model, not to scale. No chromosome is lined up. Ari labels drawing P of a dividing plant cell. Which stage of the cell cycle does it show?
- Anaphase
- Interphase
- Prophase
- Metaphase
Read this first
Cell drawing P (model, not to scale)
An animal cell stretched into an oval. At each end sits a group of 6 chromosomes, each group unwinding into long thin threads. A new nuclear envelope is forming around each group. A shallow groove pinches in at the middle of the cell.
Bo labels drawing P of a dividing animal cell. Which stage of mitosis do its chromosomes and nuclei show?
- Anaphase
- Prophase
- Telophase
- Cytokinesis
Cell drawing P (model, not to scale): a plant cell with a cell wall. The nuclear envelope is gone. Esme labels drawing P of a dividing plant cell. Which stage of the cell cycle does it show?
- Interphase
- Prophase
- Anaphase
- Metaphase
“model, not to scale” Jun counts the rods in drawing P of a cell at metaphase. How many chromosomes does the cell have?
- 3 chromosomes: the pairs are counted in twos
- 12 chromosomes: each rod counts as a chromosome
- 6 chromosomes: each joined pair counts as one
- 18 chromosomes: 12 rods plus 6 centromeres
a cell at metaphase has 6 chromosomes. Each chromosome is made of two sister chromatids joined at a centromere. Kira reads that a cell has 6 chromosomes at metaphase. How many sister chromatids does the cell have?
- 3: two chromosomes share each sister chromatid
- 18: three sister chromatids for each chromosome
- 12: two sister chromatids for each chromosome
- 6: one sister chromatid for each chromosome
Cell card (model data)
The cell has 6 chromosomes at metaphase, each made of two sister chromatids. In late anaphase the sister chromatids have separated and are moving to opposite ends. Counting rule (OpenStax): once separated, each chromatid is counted as one chromosome.
Luz follows the same model cell into late anaphase. Counting each separated chromatid as a chromosome, how many chromosomes are in the cell, and how many at each end?
- 12 in all, 12 at each end
- 24 in all, 12 at each end
- 12 in all, 6 at each end
- 6 in all, 3 at each end
Cycle wheel (model, not to scale)
a circle cut into arcs in order: G1, S, G2, M (mitosis) and cytokinesis. A drawn cell sits in the M arc: a plant cell with 6 X-shaped chromosomes in a row across the middle and spindle fibers attached from both ends.
Milo sees the cell drawn on the wheel. What happens to the chromosomes next?
- They line up in a row across the middle of the cell
- They unwind inside re-forming nuclear envelopes
- They condense into thick X shapes from loose chromatin
- Their sister chromatids separate and move to opposite ends
Ren compares drawings P and Q of cells dividing their cytoplasm. Which pair of labels is right?
- P is an animal cell with a cleavage furrow; Q is a plant cell with a cell plate
- P is a plant cell with a cell plate; Q is an animal cell with a cleavage furrow
- P and Q are animal cells; P has a cell plate and Q has a cleavage furrow
- P is a plant cell with a cell plate; Q is a plant cell with a cleavage furrow
Tala watches a plant cell finish mitosis. How does the plant cell divide its cytoplasm?
- Spindle fibers grow into a new wall that separates the two nuclei
- A cleavage furrow pinches the membrane inward until the cell splits
- The cell wall breaks down so the two halves can drift apart
- Vesicles fuse at the middle into a cell plate that becomes a new wall
“Cell drawing (model, not to scale):” Zee notices a groove forming while the chromosomes are still moving apart. What does this show?
- The groove is a cell plate, which forms in animal cells
- The cell skipped metaphase, so the chromosomes are moving too early
- Telophase and cytokinesis are the same event, so telophase has started
- Cytokinesis can begin in late anaphase, before telophase starts
