Across
- 2. help attract pollinators to many flowers
- 5. an angiosperm ovary that swells to surround and protect seeds
- 6. the female part of the flower
- 8. hormone that causes cells to divide and help plants that do not have enough water
- 9. occurs when a plant grows toward or away from a stimulus
- 11. a gas that causes fruit to ripen
- 12. each holds an unfertilized egg
Down
- 1. anything that causes a response from a plant
- 3. hormone that causes shoots and stems to grow by causing their cells to enlarge
- 4. small chemicals made by plant tissues that affect how other plant structures grow
- 7. the male part of the flower
- 10. leaflike structures positioned outside the petals