This packet is everything a parent or guide needs to assess Unit 06 at home — learning targets, the answers that count as correct, the mastery rubric, calibration examples, and a clipboard score sheet. No multiple-choice test: the student shows mastery by dissecting a flower and working a genetics cross aloud.
By the end of the Flowers, Seeds & Fruit unit, a student should be able to:
Six criteria, each judged Not yet / Approaching / Mastered (Page 3).
Dissect a flower; trace its parts forward to seed and fruit.
The student works a Punnett square aloud (Page 4).
Floral parts, cross setup, and predicted ratio kept distinct.
You are making a decision, not adding up points. For each criterion, decide whether the work is Not yet, Approaching, or Mastered — the column language tells you which. A criterion counts as mastered only when the student can both do the dissection and defend the plant biology behind it. A student carries three tokens per term; one token buys a re-do of one criterion on another day, so a single bad afternoon never sinks the unit.
Accept any answer in the synonyms column — they are pre-approved as equivalent. The third column flags the confusions that look close but are not yet, so you can coach precisely.
| Canonical answer | Accepted synonyms | Common confusion / discriminator |
|---|---|---|
| Flower & reproduction | ||
| Stamen | male part (anther + filament) | Anther makes pollen; filament holds it up — not the carpel |
| Carpel | pistil (stigma, style, ovary) | Female part; the ovary becomes fruit, the ovule becomes seed |
| Pollination | pollen transfer | Pollen reaches the stigma — not the same as fertilization |
| Double fertilization | two-sperm fertilization | One sperm makes the embryo, the other the endosperm — unique to flowering plants |
| Seed, fruit & genetics | ||
| Ovule → seed | fertilized ovule | The fertilized ovule matures into the seed; the ovary into the fruit |
| Alternation of generations | sporophyte / gametophyte cycle | Life cycle alternates a diploid sporophyte and a haploid gametophyte |
| Dominant vs recessive | masking allele vs masked | A dominant allele masks the recessive in a heterozygote |
| Punnett square | monohybrid cross grid | Predicts offspring ratios; a monohybrid cross gives the 3:1 ratio |
| Criterion | Not yet | Approaching | Mastered |
|---|---|---|---|
| Flower structure | Thinks a flower is decoration, not a reproductive organ. | Names petals and sepals but confuses the stamen and carpel parts. | Identifies sepals, petals, stamens (anther and filament), and the carpel (stigma, style, ovary) and states each part’s role in reproduction. |
| Pollination & double fertilization | Cannot explain how pollen reaches an egg. | Describes pollination but not double fertilization or its two products. | Traces pollination through double fertilization to the seed embryo and the endosperm, and explains how the ovary becomes fruit. |
| Seed, fruit & alternation of generations | Thinks seeds and fruit are unrelated to the flower. | Connects flower to fruit but cannot place alternation of generations. | Explains how a fertilized ovule becomes a seed and the ovary a fruit, and locates the gametophyte and sporophyte in the life cycle. |
| Mendelian genetics | Cannot predict offspring from a simple cross. | Names dominant and recessive but sets up a Punnett square incorrectly. | Uses a Punnett square to predict a monohybrid cross, explains the 3:1 ratio, and reasons about dominant vs. recessive traits. |
| Lab technique (flower dissection) | Cannot open a flower without destroying its parts. | Dissects a flower but mislabels the reproductive structures. | Dissects a flower cleanly, identifies every whorl under the hand lens, and documents a pollination or seed-set observation. |
| Integration (cross-domain) | Treats the science as isolated facts; makes no cross-domain connection. | Names a link to history, reading, or writing but cannot defend why it matters. | Connects the unit to its anchor across History · Reading · Writing (plus chosen electives) and defends why the connection matters. |
The split between Approaching and Mastered is tracing the part forward: it is not enough to name the ovary — the student follows it to the fruit, and the ovule to the seed. Ask “where does this part end up after fertilization?”
Read these before you grade. They show what Mastered and Not yet actually sound like, plus the edge cases where you should coach rather than decide on the spot.
Student: ______________________________________ Date: _______________ Guide: _________________________
| # | Criterion | Decision | Notes |
|---|---|---|---|
| 1 | Flower structure | NY / Appr / Mast | |
| 2 | Pollination & double fertilization | NY / Appr / Mast | |
| 3 | Seed, fruit & alternation of generations | NY / Appr / Mast | |
| 4 | Mendelian genetics | NY / Appr / Mast | |
| 5 | Lab technique (flower dissection) | NY / Appr / Mast | |
| 6 | Integration (cross-domain) | NY / Appr / Mast |
☐ No ☐ Yes — for criterion: __________ Tokens remaining: ☐ 3 ☐ 2 ☐ 1 ☐ 0
NY = Not yet · Appr = Approaching · Mast = Mastered · Unsure between two levels? Circle the lower one and note what a re-do would need.