Which of the following is true concerning flowering plants?

Which of the following is true concerning flowering plants? A) The flower includes sporoophyte tissue. B) The gametophyte generation is dominant. C)...

Which of the following is true concerning flowering plants?

Which of the following is true concerning flowering plants? A) The flower includes sporoophyte tissue. B) The gametophyte generation is dominant. C)...

Which of the following is true concerning flowering plants?

Which of the following is true concerning flowering plants? A) The flower includes sporoophyte tissue. B) The gametophyte generation is dominant. C)...

Which of the following is a characteristic of all angiosperms?

Which of the following is a characteristic of all angiosperms? A) complete reliance on wind as the pollinating agent B) double internal fertilization C)...

Given the differences between angiosperms and gymnosperms in the development of the integument(s), which of these statements is the most logical consequence?

Given the differences between angiosperms and gymnosperms in the development of the integument(s), which of these statements is the most logical consequence? A)...

egg cell in the embryo sac

egg cell in the embryo sac A) male gametophyte B) female gametophyte C) male sporophyte D) female sporophyte Answer: ...

Integument of pine seed

Integument of pine seed A) male gametophyte B) female gametophyte C) male sporophyte D) female sporophyte Answer: ...

Scale of ovulate (ovule-bearing) pinecone

Scale of ovulate (ovule-bearing) pinecone A) male gametophyte B) female gametophyte C) male sporophyte D) female sporophyte Answer: ...

Reptilian embryos are protected from desiccation by a leathery shell. Similarly, which pair of structures protects seed plantsʹ embryos and male gametophytes, respectively, from desiccation?

Reptilian embryos are protected from desiccation by a leathery shell. Similarly, which pair of structures protects seed plantsʹ embryos and male gametophytes,...

What is true of stamens, sepals, petals, carpels, and pinecone scales?

What is true of stamens, sepals, petals, carpels, and pinecone scales? A) They are female reproductive parts. B) None are capable of photosynthesis. C)...

A botanist discovers a new species of land plant with a dominant sporophyte, chlorophylls a and b, and cell walls made of cellulose. In assigning this plant to a phylum, which of the following, if present, would be least useful?

A botanist discovers a new species of land plant with a dominant sporophyte, chlorophylls a and b, and cell walls made of cellulose. In assigning this...

Which structure is common to both gymnosperms and angiosperms?

Which structure is common to both gymnosperms and angiosperms? A) stigma B) carpel C) ovule D) ovary E) anthers Answer: ...

Native peoples of Guam, such as the Chamorro people, are familiar with the toxicity of cycad tissues, and avoid eating them. They do, however, feast on flying foxes. The Chamorros suffer relatively high incidences of a neurodegenerative disease similar to Lou Gehrigʹs disease (ALS). Which question follows most logically from these observations?

Native peoples of Guam, such as the Chamorro people, are familiar with the toxicity of cycad tissues, and avoid eating them. They do, however, feast...

On the Pacific island of Guam, large herbivorous bats called ʺflying foxesʺ commonly feed on cycad seeds, a potent source of neurotoxins. The flying foxes do not visit male cones. Consequently, what should be true?

On the Pacific island of Guam, large herbivorous bats called ʺflying foxesʺ commonly feed on cycad seeds, a potent source of neurotoxins. The flying...

If the beetles survive by consuming cycad pollen, then whether the beetles should be considered mutualists with, or parasites of, the cycads depends upon

If the beetles survive by consuming cycad pollen, then whether the beetles should be considered mutualists with, or parasites of, the cycads depends...

If one were to erect a new taxon of plants that included all plants that are pollinated by animals, and only plants that are pollinated by animals, then this new taxon would be

If one were to erect a new taxon of plants that included all plants that are pollinated by animals, and only plants that are pollinated by animals,...

Which feature of cycads makes them similar to many angiosperms?

Which feature of cycads makes them similar to many angiosperms? 1. They have exposed ovules. 2. They have flagellated sperm. 3. They are pollinated...

Which feature of cycads distinguishes them from most other gymnosperms?

Which feature of cycads distinguishes them from most other gymnosperms? 1. They have exposed ovules. 2. They have flagellated sperm. 3. They are pollinated...

Which trait(s) is (are) shared by many modern gymnosperms and angiosperms?

Which trait(s) is (are) shared by many modern gymnosperms and angiosperms? 1. pollen transported by wind 2. lignified xylem 3. microscopic gametophytes 4....

Which of these statements is false?

Which of these statements is false? A) A female pinecone is a short stem with spore-bearing appendages. B) A male pinecone is a short stem with spore-bearing...

Arrange the following structures, which can be found on male pine trees, from the largest structure to the smallest structure (or from most inclusive to least inclusive).

Arrange the following structures, which can be found on male pine trees, from the largest structure to the smallest structure (or from most inclusive...

Similar to cacti and euphorbs, conifers often have leaves that are modified into a needle -like shape-an adaptation to arid environments. Yet, the taiga bioprovince of the northern hemisphere and the slopes of mountain ranges receive plenty of annual precipitation and have dense conifer forests. In what way are such environments able to account for the presence of trees whose leaves are adapted to arid conditions?

Similar to cacti and euphorbs, conifers often have leaves that are modified into a needle -like shape-an adaptation to arid environments. Yet, the taiga...

Which of the following can be found in gymnosperms?

Which of the following can be found in gymnosperms? A) non-fertile flower parts. B) triploid endosperm. C) fruits. D) pollen. E) carpels. Answe...

Within a gymnosperm megasporangium, what is the correct sequence in which the following should appear during development, assuming that fertilization occurs?

Within a gymnosperm megasporangium, what is the correct sequence in which the following should appear during development, assuming that fertilization...

Which of these statements is true of the pine life cycle?

Which of these statements is true of the pine life cycle? A) Cones are homologous to the capsules of moss plants. B) The pine tree is a gametophyte. C)...

Which of these statements correctly describes a portion of the pine life cycle?

Which of these statements correctly describes a portion of the pine life cycle? A) Female gametophytes use mitosis to produce eggs. B) Seeds are produced...

Generally, wind pollination is most likely to be found in seed plants that grow

Generally, wind pollination is most likely to be found in seed plants that grow A) close to the ground. B) in dense, single-species stands. C) in...

The main way that pine trees disperse their offspring is by using

The main way that pine trees disperse their offspring is by using A) fruits that are eaten by animals. B) spores. C) squirrels to bury cones. D) windblown...

Gymnosperms differ from both extinct and extant ferns because they

Gymnosperms differ from both extinct and extant ferns because they A) are woody. B) have macrophylls. C) have pollen. D) have sporophylls. E) have...

A researcher has developed two stains for use with seed plants. One stains sporophyte tissue blue; the other stains gametophyte tissue red. If the researcher exposes pollen grains to both stains, and then rinses away the excess stain, what should occur?

A researcher has developed two stains for use with seed plants. One stains sporophyte tissue blue; the other stains gametophyte tissue red. If the researcher...

Which of these is most important in making the typical seed more resistant to adverse conditions than the typical spore?

Which of these is most important in making the typical seed more resistant to adverse conditions than the typical spore? A) a different type of sporopollenin B)...

In terms of alternation of generations, the internal parts of the pollen grains of seed-producing plants are most similar to a

In terms of alternation of generations, the internal parts of the pollen grains of seed-producing plants are most similar to a A) moss sporophyte. B)...

In seed plants, which part of a pollen grain has a function most like that of the seed coat?

In seed plants, which part of a pollen grain has a function most like that of the seed coat? A) sporophyll B) male gametophyte C) sporopollenin D)...

Arrange the following in the correct sequence, from earliest to most recent, in which these plant traits originated:

Arrange the following in the correct sequence, from earliest to most recent, in which these plant traits originated: 1. sporophyte dominance, gametophyte...

In angiosperms, which number most nearly represents the event that initiates the formation of endosperm?

In angiosperms, which number most nearly represents the event that initiates the formation of endosperm? A) 4 B) 6 C) 8 D) 10 E) 12 Answer:&nb...

The embryo sac of an angiosperm flower is best represented by which number?

The embryo sac of an angiosperm flower is best represented by which number? A) 1 B) 3 C) 7 D) 9 E) 11 Answer: ...

The process labeled ʺ6ʺ involves

The process labeled ʺ6ʺ involves A) nuclear fission. B) mitosis. C) meiosis. D) fertilization. E) binary fission. Answer: ...

Which numbers represent haploid cells or tissues?

Which numbers represent haploid cells or tissues? A) 1, 3, and 5 B) 7, 9, and 11 C) 1, 3, and 11 D) 1, 5, and 7 E) 5, 7, and 9 Answer: ...

Which number represents a megaspore mother cell?

Which number represents a megaspore mother cell? A) 1 B) 3 C) 5 D) 7 E) 11 Answer: ...

Meiosis is most likely to be represented by which number(s)?

Meiosis is most likely to be represented by which number(s)? A) 2 B) 4 C) 2 and 8 D) 4 and 8 E) 10 and 12 Answer: ...

Which number represents an embryo?

Which number represents an embryo? A) 1 B) 3 C) 7 D) 9 E) 11 Answer: ...

Which number represents the mature gametophyte?

Which number represents the mature gametophyte? A) 1 B) 3 C) 5 D) 7 E) 11 Answer: ...

Suppose that the cells of seed plants, like the skin cells of humans, produce a pigment upon increased exposure to UV radiation. Rank the cells below, from greatest to least, in terms of the likelihood of producing this pigment.

Suppose that the cells of seed plants, like the skin cells of humans, produce a pigment upon increased exposure to UV radiation. Rank the cells below,...

Which of the following most closely represents the male gametophyte of seed-bearing plants?

Which of the following most closely represents the male gametophyte of seed-bearing plants? A) ovule B) microspore mother cell C) pollen grain interior D)...

In addition to seeds, which of the following characteristics are unique to the seed-producing plants?

In addition to seeds, which of the following characteristics are unique to the seed-producing plants? A) sporopollenin B) lignin present in cell walls C)...

The seed coatʹs most important function is to provide

The seed coatʹs most important function is to provide A) a nonstressful environment for the megasporangium. B) the means for dispersal. C) dormancy. D)...

Plants with a dominant sporophyte are successful on land partly because

Plants with a dominant sporophyte are successful on land partly because A) having no stomata, they lose less water. B) they all disperse by means...

All of the following cellular structures are functionally important in cells of the gametophytes of both angiosperms and gymnosperms, except

All of the following cellular structures are functionally important in cells of the gametophytes of both angiosperms and gymnosperms, except A) haploid...

Which of the following is an ongoing trend in the evolution of land plants?

Which of the following is an ongoing trend in the evolution of land plants? A) decrease in the size of the leaf B) reduction of the gametophyte phase...

The result of heterospory is

The result of heterospory is A) the existence of male and female sporophytes. B) the existence of male and female gametophytes. C) the absence of...

The sporophytes of mosses depend on the gametophytes for water and nutrition. In seed plants, the reverse is true. From which seed plant sporophyte structure(s) do the immature (unfertilized) gametophytes directly gain water and nutrition?

The sporophytes of mosses depend on the gametophytes for water and nutrition. In seed plants, the reverse is true. From which seed plant sporophyte...

In which of the following pairs do the structures play comparable roles in the plant and animal life cycles?

In which of the following pairs do the structures play comparable roles in the plant and animal life cycles? a) A plant seed and a bird egg b) A plant...

Which of these structures is a separate generation from the plant sporophyte?

Which of these structures is a separate generation from the plant sporophyte? a) A male gametophyte within a pollen grain b) The ovule c) A seed ...

Select the correct statement describing the life cycle of angiosperms.

Select the correct statement describing the life cycle of angiosperms. a) Double fertilization in the life cycle of seed plants results in the production...

What are the products of meiosis in the life cycle of a seed plant?

What are the products of meiosis in the life cycle of a seed plant? a) Megaspores or microspores b) Sperm or eggs c) Male or female gametophytes ...

Gymnosperms and angiosperms have the following in common except

Gymnosperms and angiosperms have the following in common except a) seeds. b) ovaries. c) vascular tissue. d) ovules. e) pollen. Answer: ...

Which of the following is not a characteristic that distinguishes gymnosperms and angiosperms from other plants?

Which of the following is not a characteristic that distinguishes gymnosperms and angiosperms from other plants? a) pollen b) ovules c) dependent gametophytes d)...

A fruit is most commonly

A fruit is most commonly a) a modified root. b) a mature ovary. c) a thickened style. d) a mature female gametophyte. e) an enlarged ovule. Answ...

Where in an angiosperm would you find a megasporangium?

Where in an angiosperm would you find a megasporangium? a) packed into pollen sacs within the anthers found on a stamen b) in the style of a flower c)...

Human survival literally depends on the produce of _____.

Human survival literally depends on the produce of _____. a) gymnosperms b) gnetophytes c) cycads d) ginkgoes e) angiosperms Answer: ...

Which of the following flower parts develops into a seed?

Which of the following flower parts develops into a seed? a) ovary b) stamen c) ovule d) fruit Answer: ...

Angiosperm double fertilization is so-called because it features the formation of

Angiosperm double fertilization is so-called because it features the formation of a) two embryos from one egg and two sperm cells. b) one embryo...

Which of the following is a true statement about angiosperm carpels?

Which of the following is a true statement about angiosperm carpels? a) Carpels surround and nourish the female gametophyte. b) Carpels consist of...

Carpels and stamens are

Carpels and stamens are a) spores. b) modified sporophylls. c) gametes. d) sporophyte plants in their own right. e) gametophyte plants in their own...

Which of the following is true concerning flowering plants?

Which of the following is true concerning flowering plants? a) The gametophyte generation is dominant. b) The flower includes sporophyte tissue. c)...

Which of the following is a characteristic of all angiosperms?

Which of the following is a characteristic of all angiosperms? a) double internal fertilization b) ovules that are not contained within ovaries c)...

Unlike most angiosperms, grasses are pollinated by wind. As a consequence, some unnecessary parts of grass flowers have almost disappeared. Which of the following parts would you expect to be most reduced in a grass flower?

Unlike most angiosperms, grasses are pollinated by wind. As a consequence, some unnecessary parts of grass flowers have almost disappeared. Which of...

Angiosperms are different from all other plants because only they have _____.

Angiosperms are different from all other plants because only they have _____. a) a vascular system b) flowers c) a life cycle that involves alternation...

The major difference between angiosperms and gymnosperms comes from the _____.

The major difference between angiosperms and gymnosperms comes from the _____. a) presence or absence of vascular structures b) dominance or lack of...

Reptilian embryos are protected from desiccation by a leathery shell. Similarly, which pair of structures protects seed plants' embryos and male gametophytes, respectively, from desiccation?

Reptilian embryos are protected from desiccation by a leathery shell. Similarly, which pair of structures protects seed plants' embryos and male gametophytes,...

Which of the following can be found in gymnosperms?

Which of the following can be found in gymnosperms? a) fruits b) pollen c) triploid endosperm d) nonfertile flower parts e) carpels Answer:&nb...

Within a gymnosperm megasporangium, what is the correct sequence in which the following should appear during development, assuming that fertilization occurs?

Within a gymnosperm megasporangium, what is the correct sequence in which the following should appear during development, assuming that fertilization...

Which of the following statements is true of the pine life cycle?

Which of the following statements is true of the pine life cycle? a) Conifer pollen grains contain male gametophytes. b) Double fertilization is a...

Gymnosperms differ from both extinct and extant (living) ferns because they

Gymnosperms differ from both extinct and extant (living) ferns because they a) are woody. b) have macrophylls. e) have spores. d) have pollen. e) have...

In pine, the embryo develops within the _____.

In pine, the embryo develops within the _____. a) female gametophyte b) staminate cone c) male gametophyte d) macrogametophyte e) microsporophyl...

In gymnosperms megaspores develop into _____ .

In gymnosperms megaspores develop into _____ . a) female gametophytes b) ovulate cones c) pollen grains d) male gametophytes e) female sporophyte...

A researcher has developed two stains for use with seed plants. One stains sporophyte tissue blue; the other stains gametophyte tissue red. If the researcher exposes pollen grains to both stains, and then rinses away the excess stain, what should occur?

A researcher has developed two stains for use with seed plants. One stains sporophyte tissue blue; the other stains gametophyte tissue red. If the researcher...

Which of the following is most important in making the typical seed more resistant to adverse conditions than the typical spore?

Which of the following is most important in making the typical seed more resistant to adverse conditions than the typical spore? a) waxy cuticle b)...

In terms of alternation of generations, the internal parts of the pollen grains of seed-producing plants are most similar to a

In terms of alternation of generations, the internal parts of the pollen grains of seed-producing plants are most similar to a a) fern sporophyte. b)...

Arrange the following in the correct sequence, from earliest to most recent, in which these plant traits originated.

Arrange the following in the correct sequence, from earliest to most recent, in which these plant traits originated. 1. sporophyte dominance, gametophyte...

In addition to seeds, which of the following characteristics is unique to the seed-producing plants?

In addition to seeds, which of the following characteristics is unique to the seed-producing plants? a) sporopollenin b) pollen c) use of air currents...

The seed coat's most important function is to provide

The seed coat's most important function is to provide a) protection for the embryo. b) the means for dispersal. c) a nutrient supply for the embryo. d)...

Which group is noted for the independence of gametophyte and sporophyte generations from each other?

Which group is noted for the independence of gametophyte and sporophyte generations from each other? a) angiosperms b) gymnosperms c) ferns d) mosses,...

The adaptation that made possible the colonization of dry land environments by seed plants is most likely the result of the evolution of _____.

The adaptation that made possible the colonization of dry land environments by seed plants is most likely the result of the evolution of _____. a)...

All seed plants _____.

All seed plants _____. a) are heterosporous b) produce flowers c) are nonvascular d) produce antheridia and archegonia on the same gametophyte e)...

When you look at a pine or maple tree, the plant you see is a _____.

When you look at a pine or maple tree, the plant you see is a _____. a) diploid gametophyte b) diploid sporophyte c) haploid gametophyte d) triploid...

Select the correct statement about the life cycle of a fern.

Select the correct statement about the life cycle of a fern. a) Plant sporophytes grow from haploid spores. b) In ferns, meiosis results in the formation...

Select the correct statement contrasting gametophytes and sporophytes.

Select the correct statement contrasting gametophytes and sporophytes. a) Sporophytes are larger than gametophytes. b) Sporophytes are vascular, whereas...

Select the correct statement about plant life cycles.

Select the correct statement about plant life cycles. a) Meiosis in plant life cycles is a sexual process, producing gametes. b) Over evolutionary...

Select the correct statement about charophytes, a taxon of green algae.

Select the correct statement about charophytes, a taxon of green algae. a) Living charophytes are the algal ancestors of land plants. b) Charophytes...

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?

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...

Which of the following is a land plant that has flagellated sperm and a sporophyte-dominated life cycle?

Which of the following is a land plant that has flagellated sperm and a sporophyte-dominated life cycle? a) charophyte b) moss c) fern d) liverwort e)...

Microphylls are found in which plant group?

Microphylls are found in which plant group? a) ferns b) liverworts c) mosses d) lycophytes e) hornworts Answer: ...

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

In plants, which of the following are produced by meiosis? a) diploid spores b) haploid spores c) haploid gametes d) diploid gametes e) haploid sp...

If humans had been present to build log structures during the Carboniferous period (they weren't), which plant types would have been suitable sources of logs?

If humans had been present to build log structures during the Carboniferous period (they weren't), which plant types would have been suitable sources...

Which of the following is true of seedless vascular plants?

Which of the following is true of seedless vascular plants? a) Extant seedless vascular plants are larger than the extinct varieties. b) They produce...

Which of the following characteristics helped seedless plants better adapt to life on land?

Which of the following characteristics helped seedless plants better adapt to life on land? a) photosystem II b) a chitinous cuticle c) an unbranched...

During the Carboniferous period, forests consisting mainly of _____ produced vast quantities of organic matter, which was buried and later became coal.

During the Carboniferous period, forests consisting mainly of _____ produced vast quantities of organic matter, which was buried and later became coal. a)...

What evolutionary development allowed plants to grow tall?

What evolutionary development allowed plants to grow tall? a) lignified vascular tissue b) the waxy cuticle c) leaves d) rhizoids e) sporophylls ...

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

In contrast to bryophytes, in vascular plants the dominant stage of the life cycle is the _____. a) sporophyte b) gametophyte c) archegonium d) spore e)...

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

Most bryophytes, such as mosses, differ from all other plants in that they _____. a) have cones but no seeds b) do not produce flowers c) have flagellated...

Arrange the following terms from most inclusive to least inclusive

Arrange the following terms from most inclusive to least inclusive 1. Embryophytes 2. green plants 3. seedless vascular plants 4. ferns 5. tracheophytes a)...

Which event during the evolution of land plants probably made the synthesis of secondary compounds most beneficial?

Which event during the evolution of land plants probably made the synthesis of secondary compounds most beneficial? a) the reverse-greenhouse effect...

Mitotic activity by the apical meristem of a root makes which of the following more possible?

Mitotic activity by the apical meristem of a root makes which of the following more possible? a) increase of the aboveground stem b) effective lateral...

In which of the following taxa does the mature sporophyte depend completely on the gametophyte for nutrition?

In which of the following taxa does the mature sporophyte depend completely on the gametophyte for nutrition? a) Bryophyta b) Pterophyta and Bryophyta c)...

Which of the following is true to the life cycle of mosses?

Which of the following is true to the life cycle of mosses? a) the growing embryo gives rise to the gametophyte b) the haploid generation grows on...

The diploid generation of the plant life cycle always ______.

The diploid generation of the plant life cycle always ______. a) is larger and more conspicuous than the haploid stage b) develops from a spore c)...

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

Which of the following traits was most important to enabling the first plants to move onto land? a) the development of sporopollenin to prevent the...

Which taxon is essentially equivalent to the "embryophytes?"

Which taxon is essentially equivalent to the "embryophytes?" a) Charophyceae b) Bryophyta c) Viridiplantae d) Plantae e) Pterophyta Answer: ...

The functional role of sporopollenin is primarily to

The functional role of sporopollenin is primarily to a) provide nutrients to spores b) make spores less dense and able to disperse more readily c)...

Which of the following is a true statement about plant reproduction?

Which of the following is a true statement about plant reproduction? a) eggs and sperm of byrophytes swim toward one another b) bryophytes are limited...

The following are all adaptations in plants to life on land except

The following are all adaptations in plants to life on land except a) tracheids b) reduced gametophyte generation c) rings of cellulose-synthesizing...

Which of the following was NOT a challenge for survival of the first land plants?

Which of the following was NOT a challenge for survival of the first land plants? a) sources of water b) sperm transfer d) desiccation e) animal predation f)...