Which of the following characteristics is not true of most animal phyla?
a. multicellular b. sexual reproduction c. heterotrophic d. possess a cell wall
Sea anemones and corals lack
a. a sexual stage b. an asexual stage c. a polyp stage d. a medusa stage
According to the binomial system of nomenclature, Rana in Rana catesbeiana refers to the
a. species b. family c. genus d. class
Hydra reproduces asexually by means of
a. nematocysts b. buds c. gland cells d. gametes e. choanocytes
Animals which possess only endoderm and ectoderm are referred to as
a. protostomes b. triploblastic c. deuterostomes d. diploblastic
Which of the following describes how members of the Phylum Porifera obtain food?
a. autotrophs b. carnivores c. phagocytosis d. filtration (filter feeders)
All known organisms in this group have two different types of nuclei within their cells
a. dinoflagellates b. ciliates c. euglenozoans d. cnidarians
In a typical cnidarian, food enters an opening to the digestive cavity and leaves by
a. the anus b. the tentacles c. the same opening d. the bladder
Sessile organisms are usually not
a. very good at swimming b. able to reproduce by themselves
c. able to remain in one place d. able to move around freely
In deuterostomes, the mouth develops before the anus
a. True b. False
Members of this group possess flattened vesicles stacked in a continuous layer below their plasma membranes
a. Euglenozoa b. Alveolata c. Cnidaria d. Nematoda
Corals possess a protective skeleton composed of
a. sodium carbonate b. velum c. calcium carbonate d. calcium oxide
A __________ is a visual representation of the evolutionary history of a group of organisms.
a. clade b. histogram c. phylogeny d. outgroup
_______________ structures-are similar to each other because of common descent. Bat wing and human arm.
a. analogous b. homologous c. derived d. ancestral