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

The taller a Brazil nut tree is, 1. the more valuable it is as a source of lumber. 2. the less useful it is to harpy eagles. 3. the greater its photosynthetic rate relative to neighbouring plants.

If a female orchid bee has just left a Brazil nut tree with nectar in her stomach, and if she visits only other flowers on the same tree, the result should be

Which of the following are structures of angiosperm gametophytes?

Use the following information to answer the questions below. Harold and Kumar are pre-med and pre-pharmacy students, respectively. They complain to their biology professor that they should not have to study about plants because plants have little relevance to their chosen professions. -From reading their biology textbook, what would Harold and Kumar discover?

Which of the following statements is true of monocots?

The cutting and burning of tropical rain forests leads to which of the following? 1. addition of CO₂ to the atmosphere 2. decreased removal of CO₂ from the atmosphere 3. greenhouse effect 4. global warming 5. decreasing sea level

Where in an angiosperm would you find a megasporangium?

Angiosperm double fertilization is so called because it features the formation of

Use the following information to answer the questions below. In onions (Allium), cells of the sporophyte have 16 chromosomes within each nucleus. Match the number of chromosomes present in each of the following onion tissues. -How many chromosomes should be in a megasporangium nucleus?

Which of the following sex and generation combinations most directly produces the pollen tube?

What adaptations should one expect of the seed coats of angiosperm species whose seeds are dispersed by frugivorous (fruit-eating)animals, as opposed to angiosperm species whose seeds are dispersed by other means? 1. The exterior of the seed coat should have barbs or hooks. 2. The seed coat should contain secondary compounds that irritate the lining of the animal's mouth. 3. The seed coat should be able to withstand low pH levels. 4. The seed coat, upon its complete digestion, should provide vitamins or nutrients to animals. 5. The seed coat should be resistant to the animals' digestive enzymes.

If one were to erect a new taxon of plants that included all plants that are pollinated by animals, and only plants that are pollinated by animals, then this new taxon would be

Which trait(s)is (are)shared by many modern gymnosperms and angiosperms? 1. pollen transported by wind 2. lignified xylem 3. microscopic gametophytes 4. sterile sporophylls, modified to attract pollinators 5. endosperm

Use the following information to answer the questions below. In onions (Allium), cells of the sporophyte have 16 chromosomes within each nucleus. Match the number of chromosomes present in each of the following onion tissues. -How many chromosomes should be in a generative cell nucleus?

Which of the following structures in the life cycle of a pine are haploid?

The next few questions refer to the following description. Match the animal features with the appropriate angiosperm analogue. 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 internal fertilization that occurs prior to shell deposition is what type of angiosperm analogue?

The following questions refer to the description below. Biologists are studying pollination of one species of alpine flower in the Canadian Rocky Mountains. In late spring and early summer, they find that the majority of flowers are deep red and deep pink. Toward the end of summer, the most common colours are white and very pale pink. -What is the most likely explanation as to why the colours of the flowers from the same plants change from dark red to white as summer progresses?

Use the following information to answer the questions below. Harold and Kumar are pre-med and pre-pharmacy students, respectively. They complain to their biology professor that they should not have to study about plants because plants have little relevance to their chosen professions. -Which adaptation(s)of land plants is (are)likely to provide Harold with future patients?

Which of the following statements is true of the pine life cycle?

The next few questions refer to the following description. Match the animal features with the appropriate angiosperm analogue. 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 is what type of angiosperm analogue?