Bio exam 2

1. Which of the following did NOT represent a challenge that plants faced in colonizing land from the ocean?

As a result of the diversification and rise to ecological dominance of angiosperms, tropical forests are thought to have become:

Cooler, shadier, and more humid.

Warmer, shadier, and drier.

More humid, with the temperature and light environment unchanged.

Cooler and drier.

Which of the following correctly describes the “fern” we see when walking in the woods?

The diploid sporophyte

The haploid sporophyte

The diploid gametophyte

The haploid gametophyte

Which taxonomic group of angiosperms contributes most to the global food supply for human societies?

Monocots

Eudicots

Grasses and fruits

Vegetables and fruits

Based on a lack of _____ in their fossil record, the earliest land plants are thought to have only been able to maintain photosynthesis intermittently.

Vascular tissues

Cuticle

Stomata

Sporopollenin

Which taxonomic group of land plants still in existence today was the dominant group of land plants when the angiosperms began their rapid increase in speciation and distribution?

Gymnosperms

Bryophytes

Ferns and horsetails

Lycophytes

Which of the following plants were present on Earth 350 million years ago?

Which of the following plants were present on Earth 100 million years ago?

As discussed in the text, angiosperms are, by far, the most diverse group of plants. According to the phylogenetic tree in Figure 33.1, which group would be considered the LEAST diverse?

Which of the following is a feature of land plants that is also found among the group of green algae from which land plants arose, and, therefore, may represent a “pre-adaptation” to life on land?

Retention of embryo by parent

Chloroplasts

Multicellular diploid generation

Cuticle

Which of the following traits were likely present in the last common ancestor of bryophytes?

Land plants (not necessarily angiosperms) appeared in the fossil record approximately 200 million years ago, only slightly before the appearance of complex animals on Earth.

False

True

Which of the following statements is TRUE regarding angiosperms?

Although the appearance of angiosperms coincided with a decrease in the overall diversity of other groups of plants, their appearance also influenced the evolution of new species of non-angiosperm plants.

Angiosperms are the second most diverse group of plants (the first is gymnosperms).

Over 400 million years ago on Earth, the landscape was dominated by angiosperm trees and shrubs.

The appearance of angiosperms on Earth did not affect the atmosphere or landscape; Earth's landscape has changed very little over the last 400 million years.

They are some of the earliest known plants to have existed on Earth, and they appeared—alongside lycophytes—approximately 400 million years ago.

With the appearance of angiosperms on Earth, all other types of plants became extinct. The conifers, cycads, and ferns seen today are in no way related to plant species existing millions of years ago.

False

True

Bio exam 2

More Quizzes