Plants and plant functions.

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Across
  1. 3. mainly of oxygen and nitrogen.
  2. 4. 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 by-product of any
  3. 6. holds the plant up/supports the leaves
  4. 7. acts as a buffer against pollen contamination/to assist the process of fertilization
  5. 9. branch of biology that deals with the study of plants, including their structure, properties, and biochemical processes. ... Also included are plant classification and the study of plant diseases and of interactions with the environment
  6. 10. light from the sun
  7. 11. absorbs water/anchors the plant
  8. 12. a living organism of the kind exemplified by trees, shrubs, herbs, grasses, ferns, and mosses, typically growing in a permanent site, absorbing water and inorganic substances through its roots, and synthesizing nutrients in its leaves by photosynthesis using the green pigment chlorophyll
  9. 14. a living thing) undergo natural development by increasing in size and changing physically; progress to maturity/become larger or greater over a period of time; increase
  10. 15. develop into seeds upon fertilization
  11. 18. to produce food for the plant by photosynthesis
  12. 19. The ovule producing part of a flower
  13. 20. protect and nourish the embryo or young plant
Down
  1. 1. The pollen-producing part of a flower
  2. 2. protects the seeds and also helps to spread them
  3. 5. captures pollen
  4. 6. defensive organ that encloses and protects the developing reproductive structures
  5. 8. green pigment, present in all green plants and in cyanobacteria, is responsible for the absorption of light to provide energy for photosynthesis. Its molecule contains a magnesium atom held in a porphyrin ring
  6. 10. the upper layer of earth in which plants grow, a black or dark brown material typically consisting of a mixture of organic remains, clay, and rock particles
  7. 13. reproduction
  8. 16. The part of the stamen where pollen is produced
  9. 17. colorless, transparent, odorless liquid that forms the seas, lakes, rivers, and rain and is the basis of the fluids of living organisms