Exam 30: Plant Diversity II: The Evolution of Seed Plants

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?

Entrepreneurs attempted,but failed,to harvest nuts from plantations grown in Southeast Asia.Attempts to grow Brazil nut trees in South American plantations also failed.In both cases,the trees grew vigorously,produced healthy flowers in profusion,but set no fruit.Consequently,what is the likely source of the problem?

In terms of alternation of generations,the internal parts of the pollen grains of seed-producing plants are most similar to a

In the long run,harvesting Brazil nut trees for their lumber is most likely to benefit

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. -It would be best for these students,and for society in the long run,if their biology professor responds by

Given the differences between angiosperms and gymnosperms in the development of the integument(s),which of these statements is the most logical consequence?

Gymnosperms differ from both extinct and extant (living)ferns because they

Which of the following are structures of angiosperm gametophytes?

The seeds of orchids are among the smallest known,with virtually no endosperm and with miniscule seed leaves.Consequently,what should one expect to be true of such seeds?

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

Arrange the following structures,which can be found on male pine trees,from the largest structure to the smallest structure (or from most inclusive to least inclusive). 1)sporophyte 2)microspores 3)microsporangia 4)pollen cone 5)pollen nuclei

A fruit is most commonly

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 yolk and/or albumen of an animal egg is what type of angiosperm analogue?

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 tube cell nucleus?

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. -In order to complete their pollination study,the biologists had to

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

The fruit of the mistletoe,a parasitic angiosperm,is a one-seeded berry.In members of the genus Viscum,the outside of the seed is viscous (sticky),which permits the seed to adhere to surfaces,such as the branches of host plants or the beaks of birds.What should be expected of the fruit if the viscosity of Viscum seeds is primarily an adaptation for dispersal rather than an adaptation for infecting host plant tissues?

In seed plants,which of the following is part of a pollen grain and has a function most like that of the seed coat?

Which of the following is true concerning flowering plants?