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Which of the following is not evidence that charophytes are the closest algal relatives of plants? |
the presence of chloroplasts |
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Which of the following characteristics of plants is absent in their closest relatives, the charophyte algae? |
alternation of multicellular generations |
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In plants, which of the following are produced by meiosis? |
haploid spores |
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Microphylls are found in which plant group? |
lycophytes (club mosses) |
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Select the correct statement about charophytes, a taxon of green algae. A)Charophytes are embryophytes B)Living charophytes are the algal ancestors of land plants. C)Charophytes and land plants share three distinctive traits. |
C)Charophytes and land plants share three distinctive traits. |
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Which of these facts provides the best support for the hypothesis that plants evolved from green algae? |
The chloroplasts of plants and green algae all have both chlorophyll a and b. |
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Select the correct statement about plant life cycles. A) Over evolutionary time, the sporophyte has replaced the gametophyte in plant life cycles. B)Meiosis in plant life cycles is a sexual process, producing gametes. C)At some point in the life cycle of all plants, the sporophyte is dependent on its gametophyte parent. |
C)At some point in the life cycle of all plants, the sporophyte is dependent on its gametophyte parent. |
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Select the correct statement contrasting gametophytes and sporophytes. A) Sporophytes are vascular, whereas gametophytes are nonvascular. B) Sporophytes are diploid, whereas gametophytes are haploid. C) Sporophytes are larger than gametophytes. |
B) Sporophytes are diploid, whereas gametophytes are haploid. |
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Select the correct statement about the life cycle of a fern. A) Plant sporophytes grow from haploid spores. B) Plant gametophytes are haploid multicellular bodies. C) In ferns, meiosis results in the formation of egg and sperm cells. |
B) Plant gametophytes are haploid multicellular bodies. |
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Suppose an efficient conducting system evolved in a moss that could transport water and other materials as high as a tall tree. Which of the following statements about "trees" of such a species would not be true? A) Females could produce only one archegonium. B) Fertilization would probably be more difficult. C) Spore dispersal distances would probably increase. D)Unless its body parts were strengthened, such a "tree" would probably flop over. E)Individuals would probably compete more effectively for access to light. |
A) Females could produce only one archegonium. |
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Which term below is the proposed kingdom that would include embryophytes and charophytes? |
Streptophyta |
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Part complete |
charophytes |
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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 |
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Seedless plants include _____. |
bryophytes, lycophytes, ferns, whisk ferns, and horsetails |
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The diploid generation of the plant life cycle always _____. |
produces spores |
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In seedless plants, a fertilized egg will develop into __________. |
sporophyte |
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Most bryophytes, such as mosses, differ from all other plants in that they _____. |
lack true leaves and roots |
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In contrast to bryophytes, in vascular plants the dominant stage of the life cycle is the _____. |
sporophyte |
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What evolutionary development allowed plants to grow tall? |
lignified vascular tissue |
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During the Carboniferous period, forests consisting mainly of _____ produced vast quantities of organic matter, which was buried and later became coal. |
ferns and other seedless plants |
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