In living seed plants, a megasporangium and its integument together form a(n) ____
a. seed
b. pollen grain
c. ovary
d. mature ovule
e. immature ovule
ANSWER: e
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As oxygen appeared in the atmosphere, ________ also accumulated, which formed a protective barrier that protects the Earth from ________
A) ozone / UV radiation B) elemental sulfur / volcanism C) ferrous iron / hydroxylating radicals D) sulfate / hydrogen sulfide
Archaeans share a closer relatedness with the ________ than the ________
a. animals, protists b. bacteria, fungi c. bacteria, eukaryotes d. eukaryotes, bacteria e. prokaryotes, protists
The e4 variation of the APOE gene increases a
person’s chances of developing
a. cystic fibrosis. b. Parkinson’s disease. c. Huntington’s disease. d. Alzheimer’s disease. e. Duchenne’s muscular dystrophy
Yeast consume garbage and other dead organic matters, so they are called this
A) Primary consumers B) Producers C) Decomposers D) herbivores