The megaspore eventually becomes a _______-celled embryo sac after many cytoplasmic divisions
a. 3
b. 4
c. 7
d. 8
e. 16
c
Biology & Microbiology
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________ first noted an acidic substance in the nuclei of cells from pus.
A) Mendel B) Watson C) Miescher D) McCarty
Biology & Microbiology
Sexually transmitted infections can be spread only via unprotected intercourse
Indicate whether the statement is true or false
Biology & Microbiology
The ____ are tropical and subtropical gymnosperms that resemble palms.
A. foxtails B. gingkoes C. gnetophytes D. cycads E. conifers
Biology & Microbiology
Which of the following are the closest ancestors of humans (genus Homo)?
A. prosimians B. gibbons C. australopithecines D. chimpanzees
Biology & Microbiology