A short buccal capsule, large bulb on the esophagus, and prominent genital primordium are all characteristics of which worm?
a. T. trichiura
b. Capillaria philippinensis
c. S. stercoralis
d. A. lumbricoides
C
The organism is S. stercoralis. The rhabditiform larva is the primary diagnostic stage for stron-gyloidiasis in humans through microscopic examination of stool. The larvae are 250 to 300 m long with a short buccal capsule, large bulb on the esophagus, and prominent genital primordium
You might also like to view...
The Calvin cycle of a plant exposed to light during the day that is suddenly put in the dark
A. cannot run, as it requires light energy directly. B. runs in a different place in the plant. C. can still run as long as there is ATP, CO2, and NADPH present. D. uses a different source of carbon.
Which of the following contain the 9 + 2 arrangement of microtubules, consisting of nine doublets of microtubules surrounding a pair of single microtubules?
A) motile cilia and primary (nonmotile) cilia B) flagella and motile cilia C) basal bodies and primary (nonmotile) cilia D) centrioles and basal bodies
The most compelling evidence that the choanoflagellates give rise to animals is
A. similarity in DNA sequences B. that they are segmented C. that they are multicellular D. that they are not ancestral, i.e. animals are a polyphyletic group
C4 photosynthesis
a. is the same as C3 photosynthesis, because it takes place in chloroplasts. b. occurs in plants whose bundle sheath cells contain chloroplasts. c. takes place in plants such as wheat, rice, and oats. d. is an advantage when the weather is hot and dry. e. Both b and d are correct.