ch 29 test 3

If the diploid chromosome number of a sexually-reproducing species is 58, which of the following statements is true?

The haploid chromosome number is 29.

Plants are members of the eukaryotic supergroup ________ ,  and their closest relatives are _________.

Archaeplastida; charophyte green algae.

The closest algal relatives of land plants are __________.

charophytes

Which of the following traits was most important in enabling the first plants to move onto land?

the development of sporopollenin to prevent the desiccation of zygotes

Seedless plants include __________.

bryophytes, lycophytes, and monilophytes

The diploid generation of the plant life cycle always _______

produces spores

Which of the following characteristics of plants is absent in their closest relatives, the charophyte algae?

alternation of multicellular generations

Which of the following organisms were most likely the direct ancestors of plants?

green algae

In plants, which of the following are produced by meiosis?

haploid spores

Based on the plant fossil record, which of these events likely occurred most recently?

rise and diversification of angiosperms

Which of the following describes a difference between the structures of spores and seeds?

Spores are unicellular while seeds are not.

Which of the following biological molecules contributes to the structural integrity of plant spores?

sporopollenin

In which of the following structures of a plant are apical meristems found?

in both roots and shoots

Which of the following statements about stomata is correct?

Stomata allow gases to diffuse into and out of the plant.

The evolution of vascular tissue in plants facilitated which of the following changes?

he ability to grow taller

Select the correct statement contrasting gametophytes and sporophytes.

Sporophytes are diploid, whereas gametophytes are haploid.

Most bryophytes, such as mosses, differ from all other plants in that they _____.

lack true leaves and roots

Which of the following is a common feature among liverworts, hornworts, and mosses?

They require standing water for reproduction.

Which of the following is an accurate statement about the genus

Sphagnum

?

It represents a large repository of

CO

₂

that is likely to be released with global warming.

In contrast to bryophytes, in vascular plants the dominant stage of the life cycle is the __________.

sporophyte

What evolutionary development allowed plants to grow tall?

lignified vascular tissue

Which of the following could occur after plants moved from the oceans to land?

Animals could also move onto land because there were opportunities for new food sources.

Which of the following statements is correct regarding the life cycle of a fern?

the sporophyte generation produces spores

Which of the following characteristics is found in heterosporous plants?

two types of sporophylls