In annelids, ____ regulate the composition of body fluid. Fill in the blank(s) with the appropriate word(s)
ANSWER: nephridia
Biology & Microbiology
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Cool, dry air descends at which latitude?
a. the equator b. 30o N and S c. 45o N and S d. both 30o and 60o N and S e. at the poles
Biology & Microbiology
The innermost layer of the root cortex, which is a selectively permeable barrier that helps control the
movement of water and dissolved minerals, is called the
a. endodermis. b. root cap. c. quiescent center. d. pericycle. e. root hairs.
Biology & Microbiology
The heart, muscles, bones, and blood develop primarily from
a. ectoderm. b. mesoderm. c. endoderm. d. the placenta. e. the gray crescent.
Biology & Microbiology
What is the first part of the seedling to come out during germination?
a. plumule b. radicle c. cotyledons d. leaves e. coleoptile
Biology & Microbiology