Ecology II

3. Certain cells in these sporangia undergo meiosis and form
5. Fern spores form in a structure called
8. special transport tissue
10. is a structure that contains the male or female reproductive structure of cycads and other gymnosperm plants
12. a simple compound composed of two carbon and four hydrogen atoms
14. contains cytoplasm but lacks a nucleus and ribosomes when it is mature
15. Response A plant response that causes movement that is not dependent on the direction of the stimulus is a
17. plant completes its life span sprouts from a seed of anthophytes
19. the two cells that form a stoma are
20. Water evaporates from the inside of a leaf to the outside through stomata in a process called

1. is a food storage organ
2. usually are colorful structures that can both attract pollinators and provide them with a landing platform
4. Nuclei The result is three nuclei at each end of the cell and two nuclei in the center called
6. if a conifer pollen grain lands near the or the opening of the ovule it can be trapped in a sticky substance called pollen drop
7. plants can live for several years and usually produce flowers and seeds yearly
9. Day Plant flowers when exposed daily to a number of hours of darkness that is greater than it critical period
11. The layer of cells directly next to the endodermis towards the center of the roots is called the
13. Day Plant flowers when the number of hours of darkness is less than its critical period
16. Most flexible thin-walled cells found throughout a plant are
18. consist of parenchyma collenchyma and sclerenchyma cells and have diverse function including photosynthesis storage and support