Exam 30: Green Plants

An important fossil fuel is coal,much of which was formed when _____.

What two major novelties allowed for the first colonization of terrestrial habitats by plants?

The closest relatives of the familiar pine and spruce trees are _____.

Use the following information when answering the corresponding question(s). Scarlet gilia (Ipomopsis aggregata)usually has red flowers in an inflorescence of up to 250 flowers.In certain populations in the Arizona mountains,however,the flowers range from red to pink to white.In early summer,most of the flowers were red.Six to eight weeks later,the same individual plants were still present;the flowers ranged from pink to white,and few red flowers were present.The major pollinators early in the season were two species of hummingbirds active during the day;they emigrated to lower elevations,and the major pollinator later in the season was a hawk moth (a type of moth).The hawk moth was most active at sunset and later,and it preferred light pink to white flowers after dark.When hummingbirds were present,more red flowers than white flowers produced fruit.When only hawk moths were present,more white flowers produced fruit (K.N.Paige and T.G.Whitham.1985.Individual and population shifts in flower color by scarlet gilia: A mechanism for pollinator tracking.Science 227:315-17). -Refer to the paragraph on scarlet gilia.What is the significance of measuring fruit production?

The vast number and variety of flower species is probably related to various kinds of _____.

Which of the following lines of evidence would most support your assertion that a particular plant is an angiosperm?

Why have biologists hypothesized that the first land plants had a low,sprawling growth habit?

What evidence do paleobotanists look for that indicates the movement of plants from water to land?

Most moss gametophytes do not have a cuticle and are one to two cells thick.What does this imply about moss gametophytes and their structure?