Which of the following correctly illustrates the sequence of the origin of modern groups of plants?
A) gymnosperms, ferns, bryophytes, angiosperms
B) bryophytes, ferns, gymnosperms, angiosperms
C) bryophytes, ferns, angiosperms, gymnosperms
D) ferns, gymnosperms, angiosperms, bryophytes
Answer: B) bryophytes, ferns, gymnosperms, angiosperms
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The partial negative charge in a molecule of water occurs because _____
A) the oxygen atom donates an electron to each of the hydrogen atoms B) the electrons shared between the oxygen and hydrogen atoms spend more time around the oxygen atom nucleus than around the hydrogen atom nucleus C) the oxygen atom has two pairs of electrons in its valence shell that are not neutralized by hydrogen atoms D) the oxygen atom forms hybrid orbitals that distribute electrons unequally around the oxygen nucleus E) one of the hydrogen atoms donates an electron to the oxygen atom
A liquid that can dissolve other substances is
called a
a. compound. b. mixture. c. solvent. d. solute. e. solution
To see the structure of DNA, what type of
microscope would you use?
a. fluorescence microscope b. phase contrast microscope c. compound microscope d. dissecting microscope e. electron microscope
The probability that an individual who inherits an allele will have the phenotype associated with it is known as ____
a. pleiotropy b. genomic imprinting c. codominance d. penetrance e. linkage