| A | B |
|---|
| gametophytes | egg & sperm |
| megaspore mother cell | large cell that develops in the ovule when the flower is a bud |
| megaspores | cells with 1/2 the number of chromosomes that result from mother cell meiosis |
| degenerate | fate of 3 megaspores |
| 8 nuclei | result of 3 round of mitosis in megaspore |
| integuments | layers of ovule that become the seed coat |
| micropyle | where sperm enters the ovule |
| polar nuclei | 2 nuclei that migrate to the center of the ovule; destined to become the endosperm |
| synergids | cells that flank the egg |
| antipodals | cells of the ovule that are farthest from the micropyle |
| 8 nuclei & 2 cells | number of nuclei and cells in the female gametophyte |
| microspore mother cells | cells of the anther that develop into pollen granes |
| exine | chemicals in the outer wall of pollen grain that react with the stigma |
| tube nucleus | burrows through the style to form a pollen tube |
| sperm nuclei | 2 nuclei that follow the tube nucleus through the pollen tube |
| pollination | tranfer of pollen grains from anther to stigma |
| fertilization | union of the egg & sperm; always follows pollinatin |
| self-pollination | pollen transfer from anther to stigma of same plant |
| cross-pollination | pollen transfer from anther of one plant to stigma of anther plant |
| generative nucleus | divides to become the 2 sperm nuclei of the pollen |
| double fertilization | 1 sperm nuclei unites with egg; other sperm nuclei unites with polar nuclei |
| zygote | sperm nucleus & egg nucleus (full set of chromosomes) |
| endosperm | result of polar nuclei fertilized by sperm nucleus (3 times the number of chromosomes) |
| immature anther | A |
| mature anther | B |
| pollen grain | C |
| sperm nuclei | D |
| tube nucleus | F |
| pollen tube | E |
| ovary | G |
| ovule | H |
| megaspore mother cell | J |
| integuments | K |
| meiosis | L |
| megaspores | M |
| 3 megaspores degenerate | N |
| 3 rounds of mitosis | O |
| micropyle | P |
| double fertilization | Q |
| egg | W |
| polar nuclei | U |
| synergids | V |
| antipodals | T |
| microspore mother cells | X |
| polar nucleus | R |
| egg | S |
