Across
- 2. system is an organ system consisting of skeletal, smooth and cardiac muscles. It permits movement of the body, maintains posture and circulates blood throughout the body.
- 6. drift variation in the relative frequency of different genotypes in a small population, owing to the chance disappearance of particular genes as individuals die or do not reproduce.
- 7. selection the process whereby organisms better adapted to their environment tend to survive and produce more offspring.
- 9. the process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth.
- 10. the orientation of a plant or other organism in response to light, either toward the source of light
- 13. system is a passive biological system that removes excess, unnecessary materials from the body fluids of an organism, so as to help maintain internal chemical homeostasis and prevent damage to the body
- 14. system is a biological system consisting of specific organs and structures used for gas exchange in animals and plants.
- 16. the male fertilizing organ of a flower, typically consisting of a pollen-containing anther and a filament.
- 17. system the bodily system that protects the body from foreign substances, cells, and tissues
- 18. having two identical alleles of a particular gene or genes.
- 21. the branch of science concerned with classification, especially of organisms; systematics
- 22. the genetic constitution of an individual organism.
- 24. system the network of nerve cells and fibers which transmits nerve impulses between parts of the body.
- 25. flow The movement and exchange of genes or alleles from one population of species to another.
Down
- 1. a cellular organisational level between cells and a complete organ.
- 3. system the system that circulates blood and lymph through the body, consisting of the heart, blood vessels, blood, lymph, and the lymphatic vessels and glands.
- 4. 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.
- 5. having two different alleles of a particular gene or genes.
- 8. the turning of all or part of an organism in a particular direction in response to an external stimulus.
- 11. system involves the breakdown of food into smaller and smaller components, until they can be absorbed and assimilated into the body.
- 12. a change or the process of change by which an organism or species becomes better suited to its environment.
- 15. the set of observable characteristics of an individual resulting from the interaction of its genotype with the environment.
- 19. system The framework of the body, consisting of bones and other connective tissues, which protects and supports the body tissues and internal organs.
- 20. the vascular tissue in plants that conducts sugars and other metabolic products downward from the leaves.
- 23. a differentiated structure (such as a heart, kidney, leaf, or stem) consisting of cells and tissues and performing some specific function in an organism