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