- The defining reproductive adaptation of angiosperms is the _____.
- When you see a green mass of fern fronds, you are looking at the _____.
- Ferns and mosses are mostly limited to moist environments because _____.
- Most of the seeds and spices used for human consumption come from _____.
- In the process of angiosperm pollination, pollen grains are transferred from the _____ to the _____.
- In a pine, the embryo develops within the _____.
- After fertilization, the _____ develops into a seed and the _____ develops into a fruit.
- A major difference between angiosperms and gymnosperms involves the _____.
- In a flowering plant, meiosis occurs within the _____, producing a spore that develops into a female gametophyte.
- Land plants as a group probably share a recent common ancestor with _____.
- Fern spores are _____, and the familiar, "leafy" fern plant itself is _____.
- The male gametophyte in pine is commonly known as _____.
- An explorer found a plant that had roots, stems, and leaves. It had no flowers but produced seeds. This plant sounds like a(n) _____.
- The key factor that made possible the colonization of dry environments by conifers and other gymnosperms was most likely the evolution of _____.
- You take a close look at a moss, pulling apart the spongy mat to find an individual sprig. You see a larger leafy-looking green structure with a smaller filament and capsule on top. Where is the gametophyte?
- Which evolutionary advance gave the gymnosperms a unique adaptive advantage at the time they were evolving?
- Strolling through the woods, you would be least likely to notice which of the following?
- The "female" structures of angiosperms are called _____, and they have _____ at their base.
- These embryophytes have swimming sperm, lack a complex vascular system, and cannot grow tall. What are they?
- Small nonvascular plants that lack lignin, true roots, and true leaves are called _____.