Chapter 29 Test (1-10) Flashcards
Spores and seeds have basically the same function—dispersal—but are vastly different because _____.
A) spores are unicellular; seeds are not
B) spores have a protective outer covering; seeds do not
C) spores depend primarily on animals for dispersal; seeds do not
D) spores have stored nutrition; seeds do not
E) spores have an embryo; seeds do not
A) spores are unicellular; seeds are not
Which of the following is a true statement about plant reproduction?
A) Gametangia protect gametes from excess water.
B) Eggs and sperm of bryophytes swim toward one another.
C) Both male and female bryophytes produce gametangia.
D) Embryophytes are small because they are in an early developmental stage.
E) Bryophytes are limited to asexual reproduction.
C) Both male and female bryophytes produce gametangia.
The vast number and variety of flower species is probably related to various kinds of _____.
A) seed dispersal agents
B) herbivores
C) pollinators
D) climatic conditions
C) pollinators
On a field trip, a student in a marine biology class collects an organism that has differentiated organs, cell walls of cellulose, and chloroplasts with chlorophyll a. Based on this description, the organism could be a brown alga, a red alga, a green alga, a charophyte recently washed into the ocean from a freshwater or brackish water source, or a land plant washed into the ocean. The presence of which of the following features would definitively identify this organism as a land plant?
A) sporopollenin
B) rings of cellulose-synthesizing complexes
C) flagellated sperm
D) alternation of generations
E) embryos
E) embryos
Which of these is an advantage to a plant that moved onto land?
A) less support
B) dry environment
C) increased heat
D) decreased water availability
E) increased sunlight availability
E) increased sunlight availability
Two small, poorly drained lakes lie close to each other in a northern forest. The basins of both lakes are composed of the same geologic substratum. One lake is surrounded by a dense Sphagnum mat; the other is not. Compared to the pond with Sphagnum, the pond lacking the moss mat should have
A) lower numbers of bacteria.
B) reduced oxygen content.
C) reduced rates of decomposition.
D) less-acidic water.
D) less-acidic water.
You’ve observed a moss sporophyte attached to a gametophyte. The sporophyte is attached to a(n):
A) archegonium.
B) antheridium.
C) flower.
D) embryo sac.
E) female cone.
A) archegonium.
In which of the following taxa does the mature sporophyte depend completely on the gametophyte for nutrition?
A) Pterophyta, Bryophyta, and horsetail (Equisetum)
B) Bryophyta
C) Pterophyta
D) horsetail (Equisetum)
E) Pterophyta and Bryophyta
B) Bryophyta
If a fern gametophyte is a hermaphrodite (that is, has both male and female gametangia on the same plant), then it
A) must be diploid.
B) has lost the need for a sporophyte generation.
C) belongs to a species that is homosporous.
D) has antheridia and archegonia combined into a single sex organ.
E) is actually not a fern, because fern gametophytes are always either male or female.
C) belongs to a species that is homosporous.
Bioprospectors and ethnobotanists search for plants and plant products used for medicines by native cultures. The major function of the medicinal compounds in plants is to _____.
A) defend the plant against herbivores
B) defend the plant against microbes
C) attract insects and birds to spread seeds and fruits
D) attract pollinators for seed dispersal
A) defend the plant against herbivores
