Which of the following is NOT a member of the segmented worms, phylum Annelida?
a. earthworms
b. oligochaetes
c. polychaetes
d. roundworms
e. leeches
Ans: d. roundworms
You might also like to view...
Which hormones stimulate the growth of mammary glands during pregnancy?
a. oxytocin and prolactin b. somatotropin and oxytocin c. prolactin and somatotropin d. estrogen and progesterone e. estrogen and oxytocin
The maximum rate of increase of a population is its
a. potential. b. carrying capacity. c. exponential growth. d. distribution. e. reproductive base.
Anthropoids arose at least:a
45 million years ago. b. 22 million years ago. c. 10.2 million years ago. d. 5 million years ago. e. 2.6 million years ago.
The natural role of restriction enzymes in bacteria is to
A) make conjugation more efficient. B) allow transposons to move to another place in the chromosome. C) protect the cell from invading phages. D) allow cells to accept foreign DNA. E) provide the cell with new phenotypes, such as antibiotic resistance.