Exam 26: The Colonization of Land by Plants and Fungi

The vegetative (nutritionally active)bodies of most fungi are I.composed of hyphae. II.referred to as a mycelium. III.usually underground.

Assuming that they all belong to the same plant,arrange the following structures from largest to smallest (or from most inclusive to least inclusive). 1)spores 2)sporophytes 3)sporangia

Which of the following statements are true of monocots? I.Over 25% of extant angiosperms are monocots. II.Monocots include both crop plants and ornamental plants. III.Monocots are most closely related to eudicots. IV.Monocots possess multiple cotyledons.

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

The harpy eagle,Harpia harpyja,is the largest,most powerful raptor in the Americas.It nests only in trees taller than 25 meters.It is a "sloth specialist" but will also kill agouti.Thus,if these eagles capture too many agoutis from a particular locale,they might contribute to their own demise by

What is true of the phylogenetic tree in the figure? 1)It depicts uncertainty about whether the bryophytes or the vascular plants evolved first. 2)It is hypothetical. 3)It shows that ferns are the closest living relatives to the seed plants. 4)It indicates that seeds are a shared ancestral character of all vascular plants.

In the figure,which structure produces haploid spores by meiosis?

In the figure,which processes may result in haploid structures during the generalized life cycle for land plants?

The functional role of sporopollenin is primarily to

Which of the following is a true statement about plant reproduction?

The following question refers to the generalized life cycle for land plants shown in the figure. -In the figure,which structure produces haploid gametes by mitosis?

What is the greatest threat to plant diversity?

Which of the following would have had gene sequences most similar to the charophyte that was the common ancestor of the land plants?

You are hiking in a forest and come upon a mysterious plant,which you believe to be a lycophyte or a monilophyte.Which of the following would be most helpful in determining the correct classification of the plant?

If infection primarily involves the outermost layers of adult amphibian skin,and if the chytrids use the skin as their sole source of nutrition,then which term best applies to the chytrids?

Please use the following information to answer the questions below. The Brazil nut tree,Bertholletia excels (n = 17),is native to tropical rain forests of South America.It is a hardwood tree that can grow to over 50 meters tall,is a source of high-quality lumber,and is a favorite nesting site for harpy eagles.As the rainy season ends,tough-walled fruits,each containing 8-25 seeds (Brazil nuts),fall to the forest floor.Brazil nuts are composed primarily of endosperm.About $50 million worth of nuts are harvested each year.Scientists have discovered that the pale yellow flowers of Brazil nut trees cannot fertilize themselves and admit only female orchid bees as pollinators.The agouti (Dasyprocta spp. ),a cat-sized rodent,is the only animal with teeth strong enough to crack the hard wall of Brazil nut fruits.It typically eats some of the seeds,buries others,and leaves still others inside the fruit,which moisture can then enter.The uneaten seeds may subsequently germinate. -The agouti is most directly involved with the Brazil nut tree's dispersal of

Which taxon is essentially equivalent to the "embryophytes"?

Which of the following flower parts develops into the pulp of a fleshy fruit?

In both lichens and mycorrhizae,what does the fungal partner provide to its photosynthetic partner?

Which of the following characteristics helped seedless plants better adapt to life on land?