Which term refers to animals that have a fluid-filled cavity that separates the gut from the muscles of the body wall and which is completely lined by the peritoneum?
a. coelomate
b. pseudocoelomate
c. indeterminate
d. mesenteries
Ans: a. coelomate
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Some protists have complex life cycles and change between the haploid and diploid state. This process is called
__________ of _________. Fill in the blank(s) with the appropriate word(s).
Which of the following statements about transport through phloem is true?
A. It is aided by root pressure. B. Transport only occurs from the roots to the shoot. C. Mostly dissolved starch is transported. D. The direction of flow can change at different times if the sources and sinks change. E. No energy is required.
Which of the following can serve as a direct source of nitrogen for plants?
A. nitrogen gas in the air B. amino acids in dead organisms C. ammonia from the decomposition of dead organisms D. denitrifying bacteria in the soil
For a trait, dominant alleles mask
What will be an ideal response?