Generally, r-selected organisms exhibit:a
short life spans and early maturity.
b. long life spans and extended parental care of offspring.
c. long development time to maturity, but small body size.
d. large body size and extended parental care of offspring.
e. large body size, but short life spans.
A
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Evidence suggesting that snakes evolved from ancestral lizards includes the fact that _____
a. some give live birth to their young b. some have bony remnants of hind limbs c. all have internal fertilization d. all have amniotic eggs e. some actually have legs
Organogenesis
A. Arises from germ layer cells. B. involves failure of the organs to form. C. is when tadpoles become frogs. D. is the formation of the three germ layers. E. involves acrosomal reaction.
Which of these statements is false concerning covalent bonds?
a. Atoms share electrons. b. Molecules may possess many covalent bonds. c. Water contains polar covalent bonds. d. Covalent bonds may be "double bonds." e. In polar covalent bonds, electrons are shared equally.
Some bacteria form a capsule or slime layer around their cell wall in order to promote motility
Indicate whether the statement is true or false