1. Bulbs are food-storage organs that aid a plant in ____.
2. Vegetative reproduction in a creeping stem differs from the growth of an ordinary stem because after a creeper is rooted, it ____.
3. A gardener grows a new plant from a cutting by means of ____.
4. Male gametophytes are commonly called ____ and contain ____ nuclei.
5. A diploid cell in the ovule divides by ____ to form four ____ spores.
6. The advantage of ____ pollination is that it leads to greater ____ in offspring.
7. During fertilization in flowering plants, one sperm nucleus fertilizes the ____ while a second fertilizes two nuclei, resulting in future ____.
8. After fertilization, the ovule becomes a future ____ containing an embryo ____ plant.
9. Sporophyte generations always produce ____ through the process of ____.
10. ____ generations are always ____ in chromosome number.
11. Gametophyte generations always produce ____ through the process of ____.
12. As vascular plants evolved, the ____ generation became smaller, short lived, and lacked ____ tissue.
13. A walk through the forest finds many short green moss plants growing near a brook. Which of the following statements would most likely be correct?
14. A return visit to the site where moss plants grow results in the discovery of some small, stalklike parts growing from the green moss. Most likely, these parts are ____.
15. The petals of a flower are associated with sexual reproduction because they ____.
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