Quiz 8: Green Algae & Land Plants

The generative cell of male angiosperm gametophytes is haploid. This cell divides to produce two haploid sperm cells. What type of cell division does the generative cell undergo to produce these sperm cells? binary fission Mitosis Meiosis mitosis without subsequent cytokinesis meiosis without subsequent cytokinesis

Mitosis

Archegonia _____. are the sites where male gametes are produced may contain female sporophyte or ovum have the same function as sporangia are the ancestral versions of animal gonads make asexual reproductive structures

may contain female sporophyte or ovum

Which structure is common to both gymnosperms and angiosperms? Stigma Carpel Ovule Ovary anthers

Ovule

Which of the following is a primary producer? Oomycete Viroplasmid Bacteriophage Plankton Ciliates

Plankton

If a fern gametophyte has both male and female gametangia on the same plant, then it _____. belongs to a species that is homosporous must be diploid has lost the need for a sporophyte generation has antheridia and archegonia combined into a single sex organ is actually not a fern, because fern gametophytes are always either male or female

belongs to a species that is homosporous

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

green algae

In plants, which of the following are produced by meiosis? haploid sporophytes haploid gametes diploid gametes haploid spores diploid spores

haploid spores

Which of these are spore-producing structures? sporophyte (capsule) of a moss antheridium of a moss or fern archegonium of a moss or fern gametophyte of a moss

sporophyte (capsule) of a moss

In the process of alternation of generations, the _____. sporophyte is haploid and produces gametes sporophyte is diploid and produces spores gametophyte is haploid and produces spores gametophyte is diploid and produces gametes spores unite to form a zygote

sporophyte is diploid and produces spores

Molecular phylogenies show all land plants are a monophyletic group. This suggests that _____. there were many different transitions from aquatic to terrestrial habitats wind-pollinated plants arose first land plants have undergone a diversification since they first colonized terrestrial habitats there was a single transition from aquatic to terrestrial habitats

there was a single transition from aquatic to terrestrial habitats