Your job is to classify a newly discovered animal species. Your initial studies reveal that your specimen has tissues, organs, a head, and a pseudocoelom; has no segmentation; and has bilateral symmetry. To what phylum does this animal belong?
A) Annelida
B) Cnidaria
C) Nematoda
D) Platyhelminthes
E) Mollusca
C
You might also like to view...
Mitosis is a process that is unique to humans
a. True b. False Indicate whether the statement is true or false
In autosomal dominant inheritance, ____
a. the trait often skips generations b. about one-fourth of the progeny in a pedigree will show the trait c. two affected individuals may have unaffected children d. males are more affected than females e. the aa phenotype will be affected
In plant roots, the Casparian strip is correctly described by which of the following?
a) It ensures that all minerals are absorbed from the soil in equal amounts. b) It provides energy for the active transport of minerals into the stele from the cortex. c) It provides increased surface area for the absorption of mineral nutrients. d) It ensures that all water and dissolved substances must pass through a cell membrane before entering the stele. e) It is located in the walls between endodermal cells and cortex cells.
Plants do not have a circulatory system like that of some animals. If a water molecule in a plant did "circulate" (that is, go from one point in a plant to another and back in the same day), it would require the activity of _____
A) only the xylem B) only the phloem C) only the endodermis D) both the xylem and the phloem