Exam #2, Ch. 30

Of the following list, flagellated (swimming) sperm are present in which groups? I. Lycophyta II. Bryophyta III. Angiosperms IV. Chlorophyta V. Pterophyta

1, 2, 4, 5

Arrange the following structures, which can be found on male pine trees, from the largest structure to the smallest structure? 1. sporophyte 2. microspores 3. microsporangia 4. pollen cone 5. pollen nuclei

1, 4, 3, 2, 5

Assuming that they all belong to the same plant, arrange the following structures from largest to smallest (or from most inclusive to least inclusive): I. Antheridia II. Sperm cells III. Gametophytes IV. Gametangia

3, 4, 1, 2

All of the following are characteristics of seed plants EXCEPT: a) homospory b) production of gametophyte which remains attached to, and dependent on, the preceding sporophyte c) production of a gametophyte consisting of fewer than sex cells d) production of ovules e) production of sporangia

A

Which of the following terms is INCORRECTLY defined? a) Pterophyta - division of vascular seed plants which includes the extinct and extant ferns b) Sepals - modified leaves which comprise the basal-most portion of the anatomy of a flower and which enclose the floral structure prior to blossoming c) Megaspore - haploid cell that undergoes mitotic divisions to become the embryo sac of angiosperms d) Carpel - the angiosperm structure which includes the stigma, style, and ovary e) Anther - the angiosperm structure which contains the microsporangia

A

Which of the following is true concerning flowering plants? a) The gametophyte generation is what we see when looking at a large plant. b) The flower includes sporophyte tissue. c) The sporophyte generation is not photosynthetic. d) The gametophyte generation is dominant. e) The sporophyte generation consists of relatively few cells within the flower.

B

Which of the following structures or tissues is INCORRECTLY paired with a function? a) Endosperm - the food reserves in an angiosperm seed b) Ovule - angiosperm structure which encloses and protects the ovaries c) Tracheid - the primitive water cells of xylem d) Microspores - in seed plants are the haploid cells which undergo mitosis to form the male gametophyte e) Integuments - non-reproductive sporophyte tissue the encases the nucellus (megasporangium) and ultimately form the seed coat

B

Which of the following is true of the pine life cycle? a) Male and female gametophytes are in close proximity during gamete synthesis. b) Cones are homologous to the capsules of moss plants. c) Conifer pollen grains contain male gametophytes. d) The pine tree is a gametophyte. e) Double fertilization is a relatively common phenomenon.

C

Which one of the following is mismatched? a) Microspore - pollen grain b) Triploid nucleus - endosperm c) Angiosperms - double fertilization d) Anther - female reproductive organ e) Ovary - fruit

D

Which of the following is NOT a plant secondary product? a) nectar b) lignin c) rubber d) nicotine e) starch

E

What is the sex and generation of the tissue that produces fruit?

Female sporophyte

Which of the following flower parts develops into a seed?

Ovule

Which of the following represents the male gametophyte of an angiosperm?

Pollen

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

Pollen grain interior

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

Sporangia

The endosperm of the angiosperm seed is a direct result of...

double fertilization.

Fruits contribute to the success of angiosperms by:

facilitating seed dispersal by animals and wind.

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

fern gametophyte bearing only antheridia.

A homosporous plant...

germinates gametophytes which develop both anteridia and archegonia

Flowers are made of modified...

leaves.

All heterosporous plants produce...

megaspores that develop into female gametophytes and microspores that develop into male gametophytes.

A plant that produces _____ and _____ would have gametophytes that are distinctly male and female.

megaspores; microspores

The two large groups of angiosperms are...

monocots and eudicots.

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

one embryo involving one sperm cell and of endosperm involving a second sperm cell.

In angiosperms the male gametophyte is the _____ and the female gametophyte is the _____.

pollen/pollen tube; embryo sac

The main function of fruits in angiosperms is to...

provide for seed dispersal.

Plants store carbohydrate as:

starch.

The result of heterospory is...

the existence of male and female gametophytes.

Endosperm is...

triploid.

Heterospory refers to the condition of some plants in which...

two different spore types are produced.