Life Science 1

3. Any of two or more alternate forms of a gene that an organism may have for a particular trait.
5. The form of a trait that is expressed or shown when the combination of alleles for this trait is heterozygous.
8. A specific part of a chromosome or sequence of DNA that determines a particular feature or characteristic in an organism.
9. Populations of different species of organisms living together in the same geographic area.
11. The existence of a wide range of different species in a given area or specific period of time.
12. A plant or animal action, reaction, or activity that occurs in response to stimuli (e.g., gravity, light, temperature).
14. A feature, quality, property, or trait of an object or organism.
15. All the living and nonliving things that interact with each other in an environment.
16. An asexual reproductive process in which an outgrowth of a parent organism detaches and forms a new individual of the same species.
18. An organism that cannot produce its own food.
19. An environmental factor not associated with the activities of living organisms.

1. A characteristic of an organism that increases its chances of survival in its environment.
2. An organism whose cells contain a nucleus surrounded by a membrane.
4. An organism in a food chain that obtains nutrients from producers or other consumers; consumers may be herbivores or carnivores.
6. An animal that obtains nutrients only from plants.
7. An area that includes all living organisms and the surrounding physical features such as air, water, soil, weather, and landforms.
10. An organism that can produce food from inorganic materials (e.g., carbon dioxide, sunlight, water).
11. A factor in an environment relating to, caused by, or produced by living organisms.
13. A diagram representing the transfer of energy from the Sun through producers and a series of consumers.
14. An animal that obtains nutrients from eating other animals.
17. The process by which plants begin to grow from a seed or a spore.