Plants

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Across
  1. 1. usable energy
  2. 5. substances that act as chemical messengers within plants
  3. 7. occurs when pollen grains land on a female reproductive structure of a plant that is the same species as the pollen grain
  4. 8. a response that results in plant growth toward or away from a stimulus
  5. 10. food made by plants through the process of photosynthesis
  6. 11. daughter cells produced from haploid structures
  7. 12. a plant's response to the number of hours of darkness in its environment
Down
  1. 1. occurs when the life cycle of an organism alternates between diploid and haploid generations
  2. 2. forms from tissue in a male reproductive structure of a seed plant
  3. 3. the female reproductive structure of a seed plant where the haploid egg develops
  4. 4. series of chemical reactions that convert the energy in food molecules into usable energy
  5. 6. changes in an organism's environment that cause a response
  6. 9. series of chemical reactions that convert light energy, water, and carbon dioxide into the food-energy molecule known as glucose and give off oxygen
  7. 13. side product of photosynthesis