Biology Exam 4 Leasi
Which label designates a female reproductive structure in the accompanying figure?
8
A true coelom develops within the ectoderm.
False
Which process marks the start of the dikaryotic stage (n + n) in the fungal reproductive cycle?
Plasmogamy
You are told that the digestive tract of the animal you are studying developed an anus before a mouth. You realize that you may be looking at a(n):
Sea star
After fertilization in angiosperms, what does the ovule develop into?
Seed
What is the key characteristic that defines the Ecdysozoa clade?
The animal molts
Which was the primary challenge animals faced in adapting to life on land?
The desiccating effect of the atmosphere
Which of the following is NOT characteristic of cnidarians?
They have only one body shape, known as medusa.
What is the function of the sepal of a flowering plant?
To protect the flower bud
What is the function of the phloem in plants?
To transport dissolved sugars
A lichen is a combination of a fungus and a photoautotroph.
True
An example of an animal that is a metazoan is a sponge.
True
Animals share a common origin with choanoflagellates.
True
Gnetophytes are different from other gymnosperms in that gnetophytes have vessel elements.
True
Malpighian tubules are used for excretion
True
How is the pollen of pine trees primarily disseminated?
Wind
Which unicellular fungus is probably in most kitchens?
Yeasts
Which of the following is NOT an opisthokont, a monophyletic group characterized by a posterior flagellum on motile cells?
algae
Yeasts reproduce asexually by:
budding
Sea stars are primarily:
carnivores
The cell walls of fungi are composed of:
chitin
The common ancestor of all animals is/are the:
choanoflagellates
In cnidarians, nematocysts are housed within why type of specialized cell?
cnidocytes
Which of the following phyla is a deuterostome?
echinoderms
The epidermis of a nematode is derived from the:
ectoderm
The lining of the digestive tube is formed from:
endoderm
In most developing eudicot seeds, the primary source of nutritive material is in the:
endosperm
The phylum name Arthropoda refers to:
jointed appendages
Refer to the accompanying figure. The structure labeled as 4 is a:
zygote
Gas exchange in terrestrial insects is accomplished through:
the use of tracheae
Echinoderms are unique because:
their larvae are bilaterally symmetrical while the adult is pentaradially symmetrical.
Refer to the accompanying figure representing a protostome. Which label denotes the nerve cord?
5
The accompanying figures are representative of which of the following?
Coniferophyta
Which of the following is NOT characteristic of (most) deuterostomes?
Determinate cleavage
In most fungi, hyphae are divided by cross walls, termed which of the following?
Septa
Refer to the accompanying figure. What is missing in the filament labeled as A?
Septa
When bread gets moldy with visible black or blue spots, you are looking at masses of the colored:
Spores
The name conifer comes from the reproductive parts of conifers as they have separate male and female reproductive parts in different locations on the same plant. What is the technical name for the structures bearing these reproductive parts?
Strobili
The most diverse, successful, and familiar group of plants today are the:
Angiosperms
Like fungi, chytrid cell walls contain which of the following?
Chitin
An exoskeleton is a characteristic of an echinoderm.
False
Choanocytes are a characteristic of members of the phylum Cnidaria.
False
Chytrids produce spores that lack a flagellum.
False
Deuterostomes are split into the Ecdysozoa and the Lophotrochozoa.
False
Echinoderms are characterized by bilateral symmetry in adults and radial symmetry in juveniles.
False
In the process of double fertilization, one sperm fuses with the egg and the other sperm fuses with a spore.
False
Most conifers are dioecious.
False
The cell walls of fungi are composed of cellulose.
False
The nervous system develops from the endoderm.
False
The primary mycelium of basidiomycetes is dikaryotic.
False
The term "cleavage" refers to a series of meiotic cell divisions.
False
Which of the following explains why fewer animals live in freshwater than in the ocean?
Freshwater is generally hypotonic to tissue fluids.
As a seed develops from an ovule, the ovule wall enlarges and develops into a:
Fruit
In a fungus, a complex multicellular reproductive structure is called a(n):
Fruiting body
Which of the following regarding the coelom is NOT a correct statement?
If functions as an endoskeleton
What are the two clades of the protostomes?
Lophotrochozoa and Ecdysozoa
How do mycorrhizae benefit plants?
Mycorrhizae increase a plant's absorptive surface area of roots.
What is the structure labeled as 9 in the accompanying figure?
Pistil
Which part of a flowering plant is the immature male gametophyte?
Pollen Grain
Refer to the accompanying figure. What is the structure labeled as 8 in the figure?
mouth
