During embryonic development in vertebrates, which of the following characteristics are shared by all vertebrate animals?
(a) pharyngeal pouches
(b) postanal tail
(c) 4 limbs
(d) warm bloodedness
(e) live birth
Answer: A & B.
(a) pharyngeal pouches
(b) postanal tail
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Members of the phylum Thermotogae can be found growing in
A. the intestinal tract of mammals. B. soils of the Antarctic. C. marine salterns of the shore of the Dead Sea. D. marine hydrothermal vents and terrestrial solfataric hot springs.
The area over which an animal moves in the course of daily activity, but which it does not necessarily defend against other animals, is called what?
A. family home B. foraging space C. home range D. nesting site E. territory
The stramenopiles are an extremely diverse group of organisms which would appear to have very little in common with one another. The one unifying feature in this group is the presence of _________ ________ at some point in the life cycle.
Fill in the blank(s) with the appropriate word(s).
From what kind of molecules are nonsteroid hormones made?
What will be an ideal response?