Which sequence presents the digestive structures of an annelid in the proper order?
a. mouth, esophagus, crop, gizzard, intestine, anus
b. mouth, esophagus, gizzard, crop, intestine, anus
c. mouth, esophagus, intestine, gizzard, crop, anus
d. mouth, esophagus, crop, intestine, gizzard, anus
Ans: a. mouth, esophagus, crop, gizzard, intestine, anus
You might also like to view...
Habitat complexity can support
a. complex life histories. b. increased biodiversity. c. higher productivity. d. more different species in an area. e. All of the above.
Taste buds contain clusters of _____ and supporting cells inside special epithelial papillae
1.chemoreceptors
2.mechanoreceptors
3.photoreceptors
4.thermoreceptors
Recombination of alleles on nonsister chromatids occurs during
a. anaphase I. b. meiosis II. c. telophase II. d. crossing over.
Helper T cells secrete ________ to stimulate the proliferation of B-cells.
A. antigens B. antibodies C. MHC proteins D. cytokines