What do gametes, spores, and gametophyte
generations have in common?
a. They are all diploid.
b. They are all haploid.
c. They are limited to vascular plants.
d. They have nothing in common.
e. They are asexual structures
B
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An evil genius wants to stop all vascular plants from photosynthesizing. He decides to send his minions out to cut off the structures in plants where most photosynthesis takes place. Which structures should his minions remove?
A. roots B. flowers C. leaves D. stems
Primary spermatocytes develop from the division of
A) male gametes. B) secondary spermatocytes. C) spermatogonia. D) somatic cells.
Herbicide resistance and Bt genes from GMO
crops are now commonly found in weeds. This is an example of
a. genetic drift. b. the bottleneck effect. c. gene flow. d. the Red Queen effect. e. disruptive selection.
Immune complex reactions belong to which class of hypersensitivity reactions?
A) type I B) type II C) type III D) type IV E) type V