CH 29

The closest algal relatives of land plants are _____. A) rhodophytes B) bacillariophytes C) psilophytes D) charophytes E) chrysophytes

Which of the following traits was most important in enabling the first plants to move onto land? A) rings of cellulose-synthesizing complexes B) peroxisome enzymes that minimize losses from photorespiration C) apical meristems D) the development of sporopollenin to prevent the desiccation of zygotes E) alternation of generations

Seedless plants include _____. A) only lycophytes and pterophytes B) only nonvascular plants C) bryophytes and gymnosperms D) mosses and angiosperms E) bryophytes, lycophytes, ferns, whisk ferns, and horsetails

In moss, _____ produce sperm. A) protonemata B) antheridia C) archegonia D) sporangia E) embryos

The sperm produced by mosses require _____ to reach an archegonium. A) animals B) the development of a flower C) light D) moisture E) wind

In mosses gametes are produced by _____; in ferns gametes are produced by _____. A) binary fission ... mitosis B) meiosis ... mitosis C) mitosis ... mitosis D) meiosis ... meiosis E) mitosis ... meiosis

In seedless plants, a fertilized egg will develop into _____. A) spores B) a fruit C) a sporophyte D) a gametophyte E) gametes

The diploid generation of the plant life cycle always _____. A) produces eggs and sperm B) is larger and more conspicuous than the haploid stage C) produces spores D) is called the gametophyte E) develops from a spore

Which of the following is not evidence that charophytes are the closest algal relatives of plants? A) similarities in cell wall formation during cell division B) genetic similarities in chloroplasts C) similar sperm structure D) similarities in proteins that synthesize cellulose E) the presence of chloroplasts

Which of these facts provides the best support for the hypothesis that plants evolved from green algae? A) The chloroplasts of plants and green algae all have both chlorophyll a and b. B) Plants and green algae are photosynthetic. C) Plants and green algae have chloroplasts.

Which term below is the proposed kingdom that would include embryophytes and charophytes? A) Viridiplantae B) Plantae C) Pteridophyta D) Bryophyta E) Streptophyta

The most direct ancestors of land plants were probably _____. A) green algae B) liverworts and mosses C) photosynthesizing prokaryotes (cyanobacteria) D) kelp (brown alga) that formed large beds near the shorelines

Spores and seeds have basically the same function-dispersal-but are vastly different because _____. A) spores have stored nutrition; seeds do not B) spores are unicellular; seeds are not C) spores have a protective outer covering; seeds do not D) spores have an embryo; seeds do not

According to our current knowledge of plant evolution, which group of organisms should feature cell division most similar to that of land plants? A) charophytes B) cyanobacteria C) red algae D) unicellular green algae

Stomata _____. A) occur in all land plants and are the same as pores B) open to increase both water absorption and gas exchange C) open to allow gas exchange and close to decrease water loss D) occur in all land plants and define them as a monophyletic group

Liverworts, hornworts, and mosses are grouped together as the Bryophytes. Besides not having vascular tissue, what do they all have in common? A) They require water for reproduction. B) They can reproduce asexually by producing gemmae. C) They are all wind pollinated. D) They are heterosporous.

Assuming that they all belong to the same plant, arrange the following structures from largest to smallest. 1. antheridia 2. gametes 3. gametophytes A) 2, 3, 1 B) 2, 1, 3 C) 3, 1, 2 D) 3, 2, 1