Exam 30: Plant Diversity Ii: the Evolution of Seed Plants

Within a gymnosperm megasporangium, what is the correct sequence in which the following should appear during development, assuming that fertilization occurs? 1) sporophyte embryo 2) female gametophyte 3) egg cell 4) megaspore

Which of these is most important in making the typical seed more resistant to adverse conditions than the typical spore?

Which of the following is not a characteristic that distinguishes gymnosperms and angiosperms from other plants?

The following questions refer to the description below. Match the animal features with the appropriate angiosperm analog. Oviparous (egg-laying) animals have internal fertilization (sperm cells encounter eggs within the female's body). Yolk and/or albumen is (are) provided to the embryo, and a shell is then deposited around the embryo and its food source. Eggs are subsequently deposited in an environment that promotes their further development, or are incubated by one or both parents. -Carpels and stamens are

Which of the following is not a valid argument for preserving tropical forests?

A researcher has developed two stains for use with seed plants. One stains sporophyte tissue blue; the other stains gametophyte tissue red. If the researcher exposes pollen grains to both stains, and then rinses away the excess stain, what should occur?

For the following questions, match the adaptations of the various fruits below with the most likely means used by the fruit to disperse the seeds contained within the fruit (A-E). -The fruit has light, fibrous plumes.

With respect to angiosperms, which of the following is incorrectly paired with its chromosome count?

Which of the following is a characteristic of all angiosperms?

The following questions refer to the description below. Match the animal features with the appropriate angiosperm analog. Oviparous (egg-laying) animals have internal fertilization (sperm cells encounter eggs within the female's body). Yolk and/or albumen is (are) provided to the embryo, and a shell is then deposited around the embryo and its food source. Eggs are subsequently deposited in an environment that promotes their further development, or are incubated by one or both parents. -The yolk and/or albumen of an animal egg

What is the greatest threat to plant diversity?

Where in an angiosperm would you find a megasporangium?

For the following questions, match the various structures of seed plants with the proper sex and generation (A-D) that most directly produces them. -pollen tube

In onions (Allium), cells of the sporophyte have 16 chromosomes within each nucleus. Match the number of chromosomes present in each of the onion tissues listed below. -How many chromosomes should be in an endosperm nucleus?

Which feature of honeybees probably arose under the mutual evolutionary influence of insect-pollinated flowering plants?

In onions (Allium), cells of the sporophyte have 16 chromosomes within each nucleus. Match the number of chromosomes present in each of the onion tissues listed below. -How many chromosomes should be in an embryo sac nucleus?

The following questions refer to the description below. Match the animal features with the appropriate angiosperm analog. Oviparous (egg-laying) animals have internal fertilization (sperm cells encounter eggs within the female's body). Yolk and/or albumen is (are) provided to the embryo, and a shell is then deposited around the embryo and its food source. Eggs are subsequently deposited in an environment that promotes their further development, or are incubated by one or both parents. -The shell of an animal egg

The following questions refer to the description below. The cycads, a mostly tropical phylum of gymnosperms, evolved about 300 million years ago and were dominant forms during the Age of the Dinosaurs. Though their sperm are flagellated, their ovules are pollinated by beetles. These beetles get nutrition (they eat pollen) and shelter from the microsporophylls. Upon visiting megasporophylls, the beetles transfer pollen to the exposed ovules. In cycads, pollen cones and seed cones are borne on different plants. Cycads synthesize neurotoxins, especially in the seeds, that are effective against most animals, including humans. -Native peoples of Guam, such as the Chamorro people, are familiar with the toxicity of cycad tissues, and avoid eating them. They do, however, feast on flying foxes. The Chamorros suffer relatively high incidences of a neurodegenerative disease similar to Lou Gehrig's disease (ALS). Which question follows most logically from these observations?

Many mammals have skins and mucous membranes that are sensitive to phenolic secretions of plants like poison oak (Rhus). These secondary compounds are primarily adaptations that

The following questions refer to the generalized life cycle for land plants shown in Figure 30.1. Each number within a circle or square represents a specific plant or plant part, and each number over an arrow represents either meiosis, mitosis, or fertilization. Figure 30.1 -Which number represents a megaspore mother cell?