Across
- 2. the response of an organism to seasonal changes in day length
- 4. a group of individuals that belong to the same species and live in the same area
- 5. an interaction in which one organism kills another for food
- 8. branch of science concerned with the physical, chemical, and biological conditions of the environment and their effect on organisms
- 10. pressure exerted by the cytoplasma being pushed against the cell wall
- 12. transfer of pollen from a stamen to a pistil
- 13. large collection of animals and plants that occupy a particular geographical location
- 15. the part of the plant transport that moves nutrients (like sugar)
- 16. ripened ovary that includes fleshy or dry material surrounding the seed
- 17. all the different populations that live together in an area
- 20. the response of a plant to changing temperatures during the changing seasons
- 22. a plant that lives for one growing season
- 24. the amount of salt dissolved in a body of water
- 25. a plant that lives for 2 growing seasons, flowering in the second one
Down
- 1. the presence or introduction of a substance that is harmful to the environment
- 3. the evaporation of water from the leaves of plants
- 6. the part of the plant transport system that moves water and minerals upward from the root to the leaves
- 7. the emission of light by organism
- 9. the study of how an organism functions
- 11. falling off at a specific stage of development or time of year
- 14. the weather conditions prevailing in an area in general or over a long period of time
- 15. a plant that lives for multiple growing seasons
- 18. a natural resource that can be used in a way that assures it will not be exhausted
- 19. the wide range of all forms of life on earth or in a specfici region
- 20. the response of a plant to an environment stimulus whereby roots, stems, or leaves move toward or away from the stimulus
- 21. process by which a seed develops into a seedling
- 23. place where an individual organism or population lives