Sponges are atypical animals because they
(a) reproduce sexually.
(b) are heterotrophic.
(c) lack definite tissues.
(d) are multicellular.
(c) lack definite tissues.
Biology & Microbiology
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Substances that give up an electron to a free radical are called
a. reducing agents. b. oxidizing agents. c. neutralizing agents. d. antibiotics. e. antioxidants.
Biology & Microbiology
The evolutionary history of a group of organisms from a common ancestor is termed:a
biohistory. b. phylogeny. c. phrenology. d. phenetics. e. species origenetics
Biology & Microbiology
The domain Eukarya has ________ kingdoms
Fill in the blank(s) with correct word
Biology & Microbiology
the penile urethra is enclosed by
What will be an ideal response?
Biology & Microbiology