The formation of gametes in the gonads can best be called
(a) gametogenesis.
(b) spermatogenesis.
(c) oogenesis.
(d) none of the above.
(a) gametogenesis.
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The stroma of the land-plant chloroplast is evolutionarily derived from __________
A. the thylakoid membrane B. the plasma membrane of cyanobacteria C. the periplasm of cyanobacteria D. the cytoplasm of cyanobacteria E. the plasma membrane of a eukaryotic ancestor
Which combination is an example of prezygotic mechanisms of isolation?
a. hybrid breakdown and temporal isolation b. hybrid breakdown and gametic isolation c. hybrid sterility and temporal isolation d. mechanical and temporal isolation e. mechanical and hybrid breakdown
If a fungicide was applied near a plant, how might it kill the plant?
A. By killing the fungus associated with the plant's roots B. By killing the insects that pollinate the plants C. By breaking down the chitin in the plant's cell walls D. Fungicides kill fungi, not plants, so the plant would be fine.
Vitamin B3 is a precursor of
a. NADH. b. ATP. c. DNA. d. RNA. e. more than one of these.