Each photosystem in a eukaryotic plant __________
a. is composed of molecules of chlorophylls and carotenoids.
b. possesses a light-gathering antenna complex
c. has a specialized chlorophyll a molecule in its reaction center
d. a)., b). and c). are all true.
e. a)., b). and c). are all true, but only for Photosystem II.
D
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Migration reduces genetic differences between populations due to gene ____ between the two
Fill in the blank with the appropriate word.
When did the thinning of the ozone layer over the Arctic become so noticeable that people dubbed it the "ozone hole"? a. Early 1990s b. Early 1960s c. Mid 1980s d. There is no ozone hole about the Arctic
e. Mid 1970s
Fucus, a conspicuous intertidal alga, belongs to the phylum:
1.Chlorophyta 2.Rhodophyta 3.Phaeophyta 4.Anthophyta
In the life cycle of vascular plants, a
gametophyte forms from a
a. zygote. b. sporophyte. c. gamete. d. spore. e. zygote and a gamete