In conifers, meiosis of diploid cells in an ovule produces ____
a. microspores
b. pollen sacs
c. pollination droplets
d. pollen grains
e. megaspores
ANSWER: e
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You can be outside on an day where the air temperature is 85oF for hours without getting cold. However, you will get cold in 85oF water before too long unless you are very active. This difference is due to higher heat _____ in water relative to air.
A. radiation B. conduction C. convection D. evaporation E. transpiration
DNA sequences comprising open reading frames (ORFs) correspond to the coding regions of genes called ____________________
Fill in the blank(s) with correct word
What do gametes, spores, and the gametophyte generation have in common?
a. They are all diploid. b. They are all haploid. c. They are present in vascular plants only. d. They are all produced by meiosis. e. They are all triploid.
As many as one-third of all pregnancies end in miscarriage
Indicate whether the statement is true or false