Across
- 4. the chemical inhibition of one plant by another, due to the release into the environment of substances acting as germination or growth inhibitors.
- 5. a long, branching, filamentous structure of a fungus, oomycete, or actinobacterium.
- 7. a form of competition in which individuals of different species compete for the same resources in an ecosystem.
- 8. a phylum under kingdom Animalia containing over 11,000 species of aquatic animals found both in freshwater and marine environments.
- 10. the series of changes in the life of an organism including reproduction.
- 11. a multicellular organism whose mouth develops from a primary embryonic opening.
- 14. organisms that have a coelom.
- 16. an interaction in population ecology, whereby members of the same species compete for limited resources.
- 17. a type of reproduction that involves a complex life cycle in which a gamete with a single set of chromosomes combines with another gamete to produce a zygote that develops into a diploid.
- 18. each of a number of small areas of habitat, typically of one square meter, selected at random to act as samples for assessing the local distribution of plants or animals.
- 19. an animal that does not possess a body cavity.
Down
- 1. a process in which saprobionts feed by secreting enzymes through the cell membrane onto the food.
- 2. an organism with body cavity that is not derived from the mesoderm, as in a true coelom, or body cavity.
- 3. the vegetative part of a fungus, consisting of a network of fine white filaments.
- 6. a type of reproduction that does not involve the fusion of gametes or change in the number of chromosomes.
- 9. involves collecting and analyzing numerical data for statistical analysis.
- 12. a path along which one counts and records occurrences of the objects of study.
- 13. usually perforated by pores large enough for ribosomes , mitochondria, and sometimes nuclei to flow between cells.
- 15. data that can be counted or measured, and given a numerical value.
