What group is the closest living relative to the group that gave rise to tetrapods?
A. Sharks
B. Ray-finned fish
C. Lobe-finned fish
D. Lamprey
Ans: C. Lobe-finned fish
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There is a group of invertebrate animals called rotifers, among which a particular group of species reproduces, as far as is known, only asexually. These rotifers, however, have survived a long evolutionary history without evidence of having been overcome
by excessive mutations. Since the rotifers develop from eggs, but asexually, what can you predict? A) The eggs and the zygotes are all haploid. B) The animals are all hermaphrodites. C) While asexual, both males and females are found in nature. D) All males can produce eggs. E) No fertile males can be found.
The process of moving water through a plant by transpiration works because water molecules stick to each other with
A. turgor pressure. B. osmosis. C. ionic bonds. D. adhesion. E. hydrogen bonds.
Body parts derived from endoderm include
A) epidermis and dermis of the skin as well as hair and nails. B) the urinary bladder epithelium, pancreas, and digestive tract lining. C) all connective tissues, including blood, bone, and cartilage. D) the linings of the blood vessels, trachea, and body cavities.
What is true about homologous structures?
a. they are always used for the same function b. they are formed from different developmental pathways c. the same genes direct their development d. they are only found within species not between species e. more than one of these is correct