Exam 28: The Evolution of Seed Plants

The corolla and the calyx often play roles in

Which statement regarding our dependence on a small number of domesticated plant species for food is true?

Refer to the figure. The fruits in images _______ are categorized as simple fruits.

Which of the following about plant-pollinator interactions is false?

Which group of plants has members that produce "wood" (extensively proliferated xylem)?

In most terrestrial regions of Earth today, the flora consists predominantly of

You have discovered a new kind of tree that bears edible fruits.Each fruit consists of carpels of many flowers fused tightly together as one fruit.Based on this arrangement, this fruit would most likely resemble a(n)

Which statement regarding double fertilization is true?

Refer to the figure, which shows the evolutionary relationships among the angiosperms. If you discovered a new plant with a two-whorl perianth but more than one cotyledon, the plant would belong to which group?

In angiosperms, double fertilization results in the development of

Major floral organs usually attach to the

Which of the following are found in gymnosperms as well as angiosperms?

In wild populations, self-pollination is often seen as detrimental because it results in a lack of genetic mixing.This issue is most relevant to plants with _______ flowers, rather than those with separate male and female flowers.

The diploid zygote in angiosperms develops into the

Flowers with both megasporangia and microsporangia are said to be _______.

Which of the following does not correctly match a plant with a drug derived from that plant?

While digging through boxes in the basement of an old house, you discover an envelope full of seeds labeled "black cherry." Your first attempt to germinate some of the seeds fails, but you correctly assume these seeds are still viable based on how carefully they were stored.Based on your knowledge of seeds and the treatments that might be required to break their dormancy, design an experiment to induce their germination.Keep in mind that fruits are often an enticement for animals that eat and disperse the seeds encased within the fruit.

The fruit that encases the seeds produced by a maple tree is composed of long, thin membranes that protrude asymmetrically from the surface.These seeds are most likely dispersed by _______.

A grouping of flowers on the stem of a single plant is a(n)

Refer to the table. In 1879, W.J.Beal began an experiment that he could not hope to finish in his lifetime.He prepared 20 lots of seeds for long-term storage.Each lot consisted of 50 seeds from each of 23 species.He mixed each lot of seeds with sand and placed the mixture in an uncapped bottle, then buried all the bottles in a sandy knoll.At 5- or 10-year intervals over the next century, biologists excavated a bottle and checked the viability of its contents.The table shows the number of germinating seeds (of the original 50) from three of the species in years 50-100 of this ongoing experiment.What factors do you think might influence the differences among the species in long-term seed viability?