John Allen's plant crossword puzzle

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Across
  1. 3. is the seed-bearing structure in flowering plants formed from the ovary after flowering.
  2. 5. vascular plant tissue from which phloem, xylem, or cork grows by division, resulting in woody in secondary thickening.
  3. 6. Producers are organisms that make their own food
  4. 9. organism, usually a plant, in response to an environmental stimulus.
  5. 13. any of the minute pores in the epidermis of the leaf or stem of a plant, forming a slit of variable width which allows movement of gases in and out of the intercellular spaces.
  6. 15. is a water insoluble polysaccharide made up of thousands of glucose molecules and has a great tensile strength.
  7. 17. is a water-impervious protective layer covering the epidermal cells of leaves and other parts and limiting water loss.
  8. 20. the vascular tissue in plants that conducts sugars and other metabolic products downward from the leaves.
  9. 21. tissue: the tissue in higher plants that constitutes the vascular system, consisting of phloem and xylem, by which water and nutrients are conducted throughout the plant.
  10. 23. of generations: is the type of life cycle that occurs in those plants and algae in the Archaeplastida and the Heterokontophyta that have distinct haploid sexual and diploid asexual stages.
  11. 24. the male fertilizing organ of a flower, typically consisting of a pollen-containing anther and a filament.
  12. 25. the leaf or leaflike part of a palm, fern, or similar plant.
  13. 27. is a unit of sexual or asexual reproduction that may be adapted for dispersal and for survival, often for extended periods of time, in unfavourable conditions.
Down
  1. 1. the female organs of a flower, comprising the stigma, style, and ovary.
  2. 2. the functional or behavioral response of an organism to changes of duration in daily, seasonal, or yearly cycles of light and darkness.
  3. 4. hormone: are organic substances that regulate plantgrowth and development.
  4. 7. a filamentous outgrowth or root hair on the underside of the thallus in some lower plants, especially mosses and liverworts, serving both to anchor the plant and to conduct water.
  5. 8. the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.
  6. 10. is a detectable change in the physical or chemical structure of an organism's internal or external environment.
  7. 11. the vascular tissue in plants that conducts water and dissolved nutrients upward from the root and also helps to form the woody element in the stem.
  8. 12. the part of the ovary of seed plants that contains the female germ cell and after fertilization becomes the seed.
  9. 14. is the act of transferring pollen grains from the male anther of a flower to the female stigma.
  10. 16. an unborn or unhatched offspring in the process of development, in particular a human offspring during the period from approximately the second to the eighth week after fertilization
  11. 18. respiration: Cellular respiration is a set of metabolic reactions and processes that take place in the cells of organisms to convert chemical energy from oxygen molecules or nutrients into adenosine triphosphate, and then release waste products.
  12. 19. grain: are microscopic structures that carry the male reproductive cell of plants
  13. 22. a flowering plant's unit of reproduction, capable of developing into another such plant.
  14. 26. refers to the female reproductive organ in vertebrates that produces the female gametes