Exam 27: Seedless Plants

When a moss spore lands in a suitable spot, it germinates and grows into a filament of cells called a:

Xylem is a vascular tissue that conducts dissolved sugars.

In plants, sporogenous cells divide by mitosis to form spores.

What do ferns lack?

Which of the following were important plants millions of years ago, when species that are now extinct often reached great size?

The gametophyte generation of ferns is the:

Which is the gametophyte form of most liverworts?

If you were a paleontologist studying clams, you would have an easier research project than if you were studying early plants. Why? Include in your discussion the term "megafossils."

A key step in the evolution of vascular plants was the ability to produce ____, a strengthening polymer in the walls of cells that provide support and conduction.

Figure 27-3 ​ The structure in the accompanying figure labeled as 4 is:

Heterospory is believed to have led to the evolution of:

The gametophyte is the dominant stage in the life cycle for which of the following plant groups?

Diagram the evolution of microphylls and megaphylls.

What is the male sexual structure that produces sperm in plants?

Describe alternation of generations. Include in your discussion the following terms: gametophyte, sporophyte, diploid, haploid, dominant form, meiosis, and fertilization.