Shark reproduction and development involves
A) clearing a bottom area in order that the female can lay eggs and the male can deposit sperm over them.
B) no production of yolk at all but the first development of a primitive placenta in all sharks.
C) substantial care of young after the eggs are laid or young are born.
D) cases of oviparous,ovoviviparous,and viviparous strategies.
E) a larval stage quite different from the adult.
Correct Answer:
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Q10: The large spiracles on the top of
Q11: Unlike other vertebrates,the body fluids of hagfishes
Q12: The lateral-line of a shark is used
Q13: The cartilaginous fishes do NOT include
A)skates.
B)rays.
C)sharks.
D)eels.
E)All of
Q14: The hagfish has a keen sense of
A)depth
Q16: The most primitive of the early fishes
Q17: Hagfishes
A)are entirely fresh water animals.
B)are parasitic.
C)have a
Q18: Cartilaginous fishes
A)lost the heavy dermal armor of
Q19: Shark characteristics include
_ having internal fertilization.
_ having
Q20: The cladistic use of the term "fish"
A)applies
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